[Q] Disable 4G (LTE) and General Radio Help - AT&T Samsung Galaxy S II Skyrocket SGH-I727

Sorry if this has been posted somewhere else but I did a bunch of searching and couldn't find anything that explained what I'm looking for. Just got the Skyrocket and I'm trying to disable the LTE. 4G is awesome but I'd like to conserve my battery as much as possible and I don't need the super awesome speeds when the phone is just sitting my pocket while I'm at work. I've looked at a few different ROMs, both ICS and JB, and with the stock radio (UCLI3) I can't tick the check box for 'Use 2G Networks Only'. It checks then unchecks and then grays out. I tried a few different radios too, UCLL3, UCLK4, UXLF3, and a radio for Bell for the I757 that I suddenly can't find the info for. All of them work and give me 4G just none of them work with my ROMs to let me use just EDGE.
So far the ROMs I've tried is the new Dirty Unicorn JB ROM, AOKP ICS, and CM9.1 which I believe is also ICS. What am I missing? The last phone I used I didn't have to mess with any radios so this is all new to me. In short, what radio do I need to make this work with the ROMs I've already tried or can I get a recommendation on a ROM/Radio setup that accomplishes this? I'd prefer a ROM that is AOSP since I'm not really a fan of TouchWiz (It just doesn't feel right for some reason).

Did you try going in settings to mobile network click on mobile network mode and change the setting to gsm only? That should give you up to hspa and hspa+ for data speeds. As for using just EDGE I can't help you with that...sorry.
Sent from my SAMSUNG-SGH-I727 using xda premium

TheRandomizedGuy said:
Sorry if this has been posted somewhere else but I did a bunch of searching and couldn't find anything that explained what I'm looking for. Just got the Skyrocket and I'm trying to disable the LTE. 4G is awesome but I'd like to conserve my battery as much as possible and I don't need the super awesome speeds when the phone is just sitting my pocket while I'm at work. I've looked at a few different ROMs, both ICS and JB, and with the stock radio (UCLI3) I can't tick the check box for 'Use 2G Networks Only'. It checks then unchecks and then grays out. I tried a few different radios too, UCLL3, UCLK4, UXLF3, and a radio for Bell for the I757 that I suddenly can't find the info for. All of them work and give me 4G just none of them work with my ROMs to let me use just EDGE.
So far the ROMs I've tried is the new Dirty Unicorn JB ROM, AOKP ICS, and CM9.1 which I believe is also ICS. What am I missing? The last phone I used I didn't have to mess with any radios so this is all new to me. In short, what radio do I need to make this work with the ROMs I've already tried or can I get a recommendation on a ROM/Radio setup that accomplishes this? I'd prefer a ROM that is AOSP since I'm not really a fan of TouchWiz (It just doesn't feel right for some reason).
Click to expand...
Click to collapse
In order to disable $g and swich to 3g or 2g i could be wrong but after reading around you must have a RAT unlocked Radio like one from Rogers not ATT and and SIM Unlocked now this coming directly from other threads if you do a search on skyrocket 3g you will see multiple
http://forum.xda-developers.com/showthread.php?p=31056082#post31056082
good source also
http://forum.xda-developers.com/showpost.php?p=27806326&postcount=4
I dont know if these will work on the New Jelly Beans U will have to find out on your own

crashpsycho said:
In order to disable $g and swich to 3g or 2g i could be wrong but after reading around you must have a RAT unlocked Radio like one from Rogers not ATT and and SIM Unlocked now this coming directly from other threads if you do a search on skyrocket 3g you will see multiple
http://forum.xda-developers.com/showthread.php?p=31056082#post31056082
good source also
http://forum.xda-developers.com/showpost.php?p=27806326&postcount=4
I dont know if these will work on the New Jelly Beans U will have to find out on your own
Click to expand...
Click to collapse
Good reading! Thanks
Sent from my SAMSUNG-SGH-I727 using xda premium

crashpsycho said:
In order to disable $g and swich to 3g or 2g i could be wrong but after reading around you must have a RAT unlocked Radio like one from Rogers not ATT and and SIM Unlocked now this coming directly from other threads if you do a search on skyrocket 3g you will see multiple
http://forum.xda-developers.com/showthread.php?p=31056082#post31056082
good source also
http://forum.xda-developers.com/showpost.php?p=27806326&postcount=4
I dont know if these will work on the New Jelly Beans U will have to find out on your own
Click to expand...
Click to collapse
I believe the UXLF3 Radio is RAT Unlocked and that's the one I'm using now with Cyanogenmod 9.1 and I managed to get it to use 2G only. Not sure why it wasn't working with AOKP which is also ICS. I'm not sure if there are any RAT Unlocked radios for Jellybean yet but now that I've got it working I'm afraid to try any other ROMs lol
All this radio stuff is still making cross eyed though. I feel like someone needs to do a really good write up explaining it because it's not easy to wrap your head around if you've never had to mess with it.

Related

[Q] How to enable EDGE connectivity...

All right I've went through all the posts regarding this and none of the options seem to work. I have terrible 3G/4G signal where I live. How can I set the network!!??!! Tried the apps tried the *#*# stuff (all I get with that is "RAT selection restricted!" WTF is RAT?) I can't even make a phone call or send a simple text with the one bar of 3G/4G I get. I know most are probably against the merger but I will hopefully benefit from it cuz there is a T-Mo tower down the street from me. Anyhow please help. I'm rooted, stock AT&T, 2.2.1
loveageek said:
All right I've went through all the posts regarding this and none of the options seem to work. I have terrible 3G/4G signal where I live. How can I set the network!!??!! Tried the apps tried the *#*# stuff (all I get with that is "RAT selection restricted!" WTF is RAT?) I can't even make a phone call or send a simple text with the one bar of 3G/4G I get. I know most are probably against the merger but I will hopefully benefit from it cuz there is a T-Mo tower down the street from me. Anyhow please help. I'm rooted, stock AT&T, 2.2.1
Click to expand...
Click to collapse
It's only possible with Rogers-based ROMs (e.g. Infused v2.x)
It's not possible with the stock AT&T ROM or any derivatives, and causes all sorts of problems with CM7.
Hopefully AT&T's Gingerbread update will fix this.
Entropy512 said:
It's only possible with Rogers-based ROMs (e.g. Infused v2.x)
It's not possible with the stock AT&T ROM or any derivatives, and causes all sorts of problems with CM7.
Hopefully AT&T's Gingerbread update will fix this.
Click to expand...
Click to collapse
Would I be able to flash the rogers rom on mine? My guess is no... but its worth asking.
loveageek said:
Would I be able to flash the rogers rom on mine? My guess is no... but its worth asking.
Click to expand...
Click to collapse
Infused v2 is Rogers-based.
Entropy, I was able to force 2G with Infused 1.5.3 when I had it paired with the Rogers modem. I used the star code *#2263# and that allowed me to select a GSM only band.
Also, on current infused.v2 builds, I cannot force 2G as they're not using Rogers modem and I don't feel like flashing another modem and bricking it on these test builds.
Sent from my SAMSUNG-SGH-I997R using XDA App
TheMan42 said:
Entropy, I was able to force 2G with Infused 1.5.3 when I had it paired with the Rogers modem. I used the star code *#2263# and that allowed me to select a GSM only band.
Also, on current infused.v2 builds, I cannot force 2G as they're not using Rogers modem and I don't feel like flashing another modem and bricking it on these test builds.
Sent from my SAMSUNG-SGH-I997R using XDA App
Click to expand...
Click to collapse
Oh, thanks for the info - it's the modem and not the userland! Very useful to know.

Lost LTE

I have ICS-SUPERLITE-4.2 on Rogers and i totally lost LTE. I wrote in many existing threads and dev section and no one answered.
I lost LTE, even in areas of full reception, i dont have it, i used stock APN and LTE APN and still dont get it. I do get 4G.
Other on rogers running 4.2 have lte, just less reception so im guessing radio is not the problem. Any idea?
mhx did say he broke lte in 4.1 so maybe you got something from that. im flashing now and ill see how it goies
well im on 4.2 so its supposed to be fixed
I was having lte issues on 4.2 aswell
Sent from my SAMSUNG-SGH-I727 using xda premium
finally got an good answer from another thread...wokred for me instantly
mattymon said:
LTE works fine. Just make sure it says ltemobile.apn instead of rogers-core. If it still doesnt work then go int the phones menu *#2263# and select option 4. After that go back into the menu again and select 1 for automatic.
Click to expand...
Click to collapse
I've had to use the *#2263# option to get LTE on every ICS ROM I have tried so far, works great but sometimes I have had to redo it after the 2nd and 3rd reboot for it to take...
Another solution is after you flash an ICS ROM is to have patience , if you wait 5 minutes or so after flashing, before even touching\unlocking the screen, then most of the time everything settles in nicely on its own.
if ur using rogers with the ics leaks, there's several issues. Call id and lack of lte being one of them. This issue is present with all of them, it is an unstable leal after all. i believe lack of lte unless near a strong connection is due to uclca4 issues.
well after doing what i wrote 2 posts above, i have no issues with phone except for reboot/power off hang, i also get the occasional 2-3 second lag but its quite rare. Besides, im very haapy with rom, battery life is much better than GB
no lte after ics leak
I've the same issue with AT&T in Miami which has a strong LTE network. LTE worked great with GB. After installing the ICS leak all I get is HSPA:11. When I go into *#2263# it says RAT Selection option is restricted. Anyone have a solution?
daviebeach said:
I've the same issue with AT&T in Miami which has a strong LTE network. LTE worked great with GB. After installing the ICS leak all I get is HSPA:11. When I go into *#2263# it says RAT Selection option is restricted. Anyone have a solution?
Click to expand...
Click to collapse
Probably don't have the correct apn. apn needs to be set to pta in order to get lte.
daviebeach said:
I've the same issue with AT&T in Miami which has a strong LTE network. LTE worked great with GB. After installing the ICS leak all I get is HSPA:11. When I go into *#2263# it says RAT Selection option is restricted. Anyone have a solution?
Click to expand...
Click to collapse
Ditto - well actually I AM seeing LTE, but a drastically reduced data rates. Does not seem to matter what ROM, or Kernel or how many times I have re-flashed or re-flashed just the ICS Radio, I get roughly HALF of what I was seeing on GB. Ugh. I don't WANNA go back to Gingerbread. I just want perfection. Is that too much to ask for?
beaups said:
Probably don't have the correct apn. apn needs to be set to pta in order to get lte.
Click to expand...
Click to collapse
It's not the APN, at least in my case. It just crappy reception, and it happened exactly when I flashed ICS, and has been like that ever since. This in spite of re-flashing the Olin leak, reflashing the the radio, etc. It really irks me, and I do NOT want to go back to GB
daviebeach said:
I've the same issue with AT&T in Miami which has a strong LTE network. LTE worked great with GB. After installing the ICS leak all I get is HSPA:11. When I go into *#2263# it says RAT Selection option is restricted. Anyone have a solution?
Click to expand...
Click to collapse
reflash the radio then you should be ok.
apn is set to PTA so not sure what to try next.
Sent from my SAMSUNG-SGH-I727 using xda premium
Sorry. Missed reflashing the radio. haven't rooted since installing I've leak. I'll try that next. Thanks
Sent from my SAMSUNG-SGH-I727 using xda premium
Ha! ICS leak. Gotta love auto correct.
Sent from my SAMSUNG-SGH-I727 using xda premium
RAT Selection option is restricted
Just flashed SeanZ ICS 4.2A-7 ROM and i727UCAL4 modem. I'm still getting "RAT Selection option is restricted". There is nothing else on that screen. This has been 3 different radios now and I cannot get a screen that allows me to select the radio band.
Would flashing a different kernel work? Any other ideas?

ATT vs ROGERS and how to swtich?

Okay so I'm currently running an ATT rom and radio combo. I want to first fully understand the difference between the two. I'm really unsure as to what the difference is and which one is better for what?
My next question is that if I am to switch from ATT to Rogers, do I just simply flash the new Radio and thats it? I've heard elsewhere that u must dial #*2.....something something and mess with the APN settings once u flash a rogers radio. What are the exact steps?
Also is it true that in order to get the capabilities to turn OFF LTE, I MUST switch to Rogers because it is "RAT Unlocked"?
Im having terrible service because I am in an LTE test site and I really want to turn it off and save myself the headaches from constant loss of data and reception.
I apologize for any repeated questions; I'm just trying to learn. I've attached my current build.
Thanks in advanced for any help.
I think yes roms are interchange but not all radios...and yes Rogers radio is RAT unlocked so you can disable LTE...which you can't do with att radios
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

ROMS & Radios?

AT&T customer, midwest United States here. I live in a fringe area, but have always been able to get reception.... until I rooted and started running custom ROMS. It seems some ROMS, for whatever reason, get better radio reception than others.
I tried Viper, and while it was the best for reception, there were a lot of things that gave me trouble and I couldnt live with.
The CM ROMS wont even think about getting reception for me, unless the mobile data is turned on, and then are very erratic. I leave the data turned off when at home due to it always looking and searching and killing my battery. Well, that, and I always use wifi at home. I even tried the newer 3.18 AT&T radio, but it didnt help
Any suggestions as to a ROM that is known for reception? Or a specific AT&T Radio that is better for reception? While I knew different ROMS had different good/bad points... I didnt know the reception was on of those things.
Thanks
SilverFox66 said:
AT&T customer, midwest United States here. I live in a fringe area, but have always been able to get reception.... until I rooted and started running custom ROMS. It seems some ROMS, for whatever reason, get better radio reception than others.
I tried Viper, and while it was the best for reception, there were a lot of things that gave me trouble and I couldnt live with.
The CM ROMS wont even think about getting reception for me, unless the mobile data is turned on, and then are very erratic. I leave the data turned off when at home due to it always looking and searching and killing my battery. Well, that, and I always use wifi at home. I even tried the newer 3.18 AT&T radio, but it didnt help
Any suggestions as to a ROM that is known for reception? Or a specific AT&T Radio that is better for reception? While I knew different ROMS had different good/bad points... I didnt know the reception was on of those things.
Thanks
Click to expand...
Click to collapse
Most roms don't touch the radio firmware flash one after another and see what works best for your area
Sent from my HTC One X using xda app-developers app
31ken31 said:
Most roms don't touch the radio firmware flash one after another and see what works best for your area
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
There sure is a big difference for some reason, with me anyway. The only 2 radios I have found in the Radio thread for AT&T without the RIL (senseless ROMS) is the 2.20 and 3.18 radios. I have bounced back and forth between them, and not seen any difference to speak of. The 3.18 seems to be the more erratic of the 2, for me anyway
SilverFox66 said:
AT&T customer, midwest United States here. I live in a fringe area, but have always been able to get reception.... until I rooted and started running custom ROMS. It seems some ROMS, for whatever reason, get better radio reception than others.
I tried Viper, and while it was the best for reception, there were a lot of things that gave me trouble and I couldnt live with.
The CM ROMS wont even think about getting reception for me, unless the mobile data is turned on, and then are very erratic. I leave the data turned off when at home due to it always looking and searching and killing my battery. Well, that, and I always use wifi at home. I even tried the newer 3.18 AT&T radio, but it didnt help
Any suggestions as to a ROM that is known for reception? Or a specific AT&T Radio that is better for reception? While I knew different ROMS had different good/bad points... I didnt know the reception was on of those things.
Thanks
Click to expand...
Click to collapse
My advice would be to try a different radio until you get one that works for you. I work out of state so I have to change settings to wcdma only to make them work in the area. I use the 3.18 radios on both CM and Sense because they work best in my home area. Viper is based on 3.17.661.2 so AT&T 2.20 may be the best option to try.
I use 2.41 seems 80% of the others I've tried plain suck in my area
Sent from my HTC One X using xda app-developers app
When flashing radios for CM, also be sure that you are flashing the ones designated strictly for CM as the radio fw is kept in another partition than sense. I've never had an issue finding a radio that works for me. They don't all work well but at least 1 always does. When looking for the best radio, I download them all, test them one at a time, marking the signal strength and speedtest results for each and then flash back to the radio that gave me the best results.
31ken31 said:
I use 2.41 seems 80% of the others I've tried plain suck in my area
Click to expand...
Click to collapse
Isnt that for a sense based ROM? I havent seen 2.41 listed for anything other than a sense ROM
Venomtester said:
My advice would be to try a different radio until you get one that works for you. I work out of state so I have to change settings to wcdma only to make them work in the area. I use the 3.18 radios on both CM and Sense because they work best in my home area. Viper is based on 3.17.661.2 so AT&T 2.20 may be the best option to try.
Click to expand...
Click to collapse
Yeah, changing to WCDMA helped a little, but not much
exad said:
When flashing radios for CM, also be sure that you are flashing the ones designated strictly for CM as the radio fw is kept in another partition than sense. I've never had an issue finding a radio that works for me. They don't all work well but at least 1 always does. When looking for the best radio, I download them all, test them one at a time, marking the signal strength and speedtest results for each and then flash back to the radio that gave me the best results.
Click to expand...
Click to collapse
Im getting the radios out of the radio thread here on XDA. I am d/l the radios in the lower section, for CM. I didnt try a different radio when using Viper, because it was useless seeing as I had so many other issues. I wasnt aware I could use Vodaphone or Telstra radios, on AT&T. I had only tried the 2 AT&T radios. My bad, I will try the others.thanks for the info guys. The speed tests are a moot point for me. As I said, i am in a fringe area. I cant judge anything based on data speed, and leave data turned off most of the time. Im not worried about data speed, or trying to fix anything in that area. Im trying to get my phone to get good enough reception to make/receive calls dependably and send/receive texts dependably. Sorry if there was some confusion over this.
Honestly, I would have stuck with Viper, but my wifi wouldnt work, and I couldnt even get my contacts and calendar imported from my Google account. In fact, there wasnt even a Sync option for contacts. So that was a no go.
Thanks again
The 2.41 he mentioned is not a ROM mate it's a radio.
Sent from my One XL using XDA Premium
timmaaa said:
The 2.41 he mentioned is not a ROM mate it's a radio.
Sent from my One XL using XDA Premium
Click to expand...
Click to collapse
yeah, I left out the "for"... as in "for a sense based ROM". Sorry, I went back and edited it
Ahh OK no worries
Sent from my One XL using XDA Premium
SilverFox66 said:
Isnt that for a sense based ROM? I havent seen 2.41 listed for anything other than a sense ROM
Yeah, changing to WCDMA helped a little, but not much
Im getting the radios out of the radio thread here on XDA. I am d/l the radios in the lower section, for CM. I didnt try a different radio when using Viper, because it was useless seeing as I had so many other issues. I wasnt aware I could use Vodaphone or Telstra radios, on AT&T. I had only tried the 2 AT&T radios. My bad, I will try the others.thanks for the info guys. The speed tests are a moot point for me. As I said, i am in a fringe area. I cant judge anything based on data speed, and leave data turned off most of the time. Im not worried about data speed, or trying to fix anything in that area. Im trying to get my phone to get good enough reception to make/receive calls dependably and send/receive texts dependably. Sorry if there was some confusion over this.
Honestly, I would have stuck with Viper, but my wifi wouldnt work, and I couldnt even get my contacts and calendar imported from my Google account. In fact, there wasnt even a Sync option for contacts. So that was a no go.
Thanks again
Click to expand...
Click to collapse
Yeah it's sense based.I run viper most of the time. That's odd what viper version were you running? I'm on my WiFi now and try to not use data connection at home being I have straight talk and had my speed throttled to almost nothing last 2 months. It have have been a bad download
Sent from my HTC One X using xda app-developers app
Try 2.40 radio, I get the best reception down here in Texas with it, especially when I go to the lease.
-Sugardaddy
Ok, I tried just about every radio in my CM ROM, to no avail. Then, on a whim, I ticked "2G Networks Only", and now I have decent phone signal/reception. This sucks though.... to have my data connection have such an affect on my voice signal. I had always left my data turned off when at home, due to being in a fringe area, and it always bouncing around and killing my battery. That, and I always use wifi at home. Now, I have to leave my data turned on, and in 2G mode... just to be able to make a call. Rather silly to me.
Thanks to everyone who offered to help... MUCH appreciated
P.S. when it was said and done, I think I wound up back on the stock radio for Cory's CM ROM (2.20?)
SilverFox66 said:
Ok, I tried just about every radio in my CM ROM, to no avail. Then, on a whim, I ticked "2G Networks Only", and now I have decent phone signal/reception. This sucks though.... to have my data connection have such an affect on my voice signal. I had always left my data turned off when at home, due to being in a fringe area, and it always bouncing around and killing my battery. That, and I always use wifi at home. Now, I have to leave my data turned on, and in 2G mode... just to be able to make a call. Rather silly to me.
Thanks to everyone who offered to help... MUCH appreciated
P.S. when it was said and done, I think I wound up back on the stock radio for Cory's CM ROM (2.20?)
Click to expand...
Click to collapse
What does your signal do if you have 2g clicked and then turn on wifi
Sent from my HTC One X using xda app-developers app
31ken31 said:
What does your signal do if you have 2g clicked and then turn on wifi
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
signal remains the same... around -87/13, but the Edge "E" icon, disappears from the screen. So, no real difference that I can tell.
It just amazes me that my data connection/type/settings can ruin my voice reception. Hopefully, its going to work decently now.
Good luck with it
Sent from my HTC One X using xda app-developers app
31ken31 said:
Good luck with it
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
thank you! so far, so good! As long as I leave the phone in 2G only, my signal is great. Well, great for my area anyway lol.
With VoLTE being so far out yet, and AT&T not having true 4G, and voice/data being on 2 different frequencies.... how in the world is this happening on this phone? How can enabling/disabling data/4G/2G have such an affect on the voice/text signal? I just cant wrap my mind around this
SilverFox66 said:
thank you! so far, so good! As long as I leave the phone in 2G only, my signal is great. Well, great for my area anyway lol.
With VoLTE being so far out yet, and AT&T not having true 4G, and voice/data being on 2 different frequencies.... how in the world is this happening on this phone? How can enabling/disabling data/4G/2G have such an affect on the voice/text signal? I just cant wrap my mind around this
Click to expand...
Click to collapse
I'm no expert by any means but if I were to take a guess, I would say it may be due to limitations of towers that are closer to you? IE: closer towers provide 2G signal but have not been updated to support 4G? and the towers that support 4G are further from you?
Like I said, I'm no expert, I'm merely taking an educated guess based on what I do know about the technology.
exad said:
I'm no expert by any means but if I were to take a guess, I would say it may be due to limitations of towers that are closer to you? IE: closer towers provide 2G signal but have not been updated to support 4G? and the towers that support 4G are further from you?
Like I said, I'm no expert, I'm merely taking an educated guess based on what I do know about the technology.
Click to expand...
Click to collapse
Actually, I dont know either, but that does make sense. If the phone is in 4G mode, then ti will try to connect to a 4G tower, which could be further away. But, there were times I had a great signal with 4G enabled, but it was in H, or H+.... and wouldnt make a call.
Im just happy I found how to get a decent... steady signal. I love the HOX, and I love the CM ROM... but I was ready to pull my hair out with this lol.
Thanks for the input, I may ask someone at the local store next time Im in. There is one kid in there, that is pretty knowledgeable. I think the rest of them know less than I do lol
Well, I spoke too soon. Now I have good reception, but the quality of my connection SUCKS! I have flashed and tried every radio for CM, and while I have a good signal now (around -85/13) my call quality is terrible and are all fuzzy and fade in and out.
I dunno, Im thinking seriously about going back to stock. I love the idea of having control over my own phone, but Im not in this as a hobby. I just want things to work right. Every ROM I have tried has had one issue or another.... wifi connection issues, wifi going to sleep when it shoudlnt, bluetooth connection problems, a dozen apps starting by themselves, radio/reception issues. Its to the point its just not worth it to me. I dont like having to work on anything every day, and if I do, I feel something needs to change in the situation, if that is the case. Dont get me wrong, Im not slamming any developers, or their projects.
When I was younger, I was always the first to get one of the Celeron CPU's and OC the snot out of it. As I got older, I thought... why? Ill just spend and extra $20 and buy the faster CPU so it is more stable, and not have to mess with anything. Thats sort of how I feel now

[Q] Which Radio for AWS on CM10.1?

Hi
I just bought an unlocked i727 (AT&T Skyrocket). In addition to unlocking it, the previous owner also modded the phone to work on AWS bands (HSDPA 1700/2100). I was all impressed by this feat, but now that I come to XDA, I find all the guy probably really did is flash the radio, which probably both unlocked the phone and enabled AWS (explained here: http://forum.xda-developers.com/showthread.php?t=2029650). Currently in "About phone", the Build Number is IMM76D.UCLF6 and the Baseband version says unknown.
The phone is running stock Android 4.0.4 (ICS), and I want to put on the latest CM10.1 stable build, but when I go to this page, it says I need a Jelly Bean radio: http://www.teamchopsticks.org/p/cm101-release-notes2.html
So now I'm worried that if I choose the wrong radio, I'll no longer have AWS bands, which I need since those are the only bands my carrier (Mobilicity) uses. Can someone please tell me which of the radios listed on the teamchopsticks blog I should use to keep the AWS bands on CM10? I'm guessing its the T-mobile version (UVMC6)...?
Thanks!
Edit: Alternatively, could I just install CM9 and leave the current radio as is? I don't really care if I have the latest android version, I just want to get rid of the stock AT&T rom and its associated bloatware.
Sandmonkee said:
Hi
I just bought an unlocked i727 (AT&T Skyrocket). In addition to unlocking it, the previous owner also modded the phone to work on AWS bands (HSDPA 1700/2100). I was all impressed by this feat, but now that I come to XDA, I find all the guy probably really did is flash the radio, which probably both unlocked the phone and enabled AWS (explained here: http://forum.xda-developers.com/showthread.php?t=2029650). Currently in "About phone", the Build Number is IMM76D.UCLF6 and the Baseband version says unknown.
The phone is running stock Android 4.0.4 (ICS), and I want to put on the latest CM10.1 stable build, but when I go to this page, it says I need a Jelly Bean radio: http://www.teamchopsticks.org/p/cm101-release-notes2.html
So now I'm worried that if I choose the wrong radio, I'll no longer have AWS bands, which I need since those are the only bands my carrier (Mobilicity) uses. Can someone please tell me which of the radios listed on the teamchopsticks blog I should use to keep the AWS bands on CM10? I'm guessing its the T-mobile version (UVMC6)...?
Thanks!
Edit: Alternatively, could I just install CM9 and leave the current radio as is? I don't really care if I have the latest android version, I just want to get rid of the stock AT&T rom and its associated bloatware.
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You can't unlock the operator lock with a radio. You need both a specific radio and a specific firmware.
AWS support is not a special feature that can be enabled, afaik it's a standard function of this phone.
The Radios made specifically for this phone (Rogers & AT&T) should have full AWS support, I don't know about the others.
Also the TeamChopsticks site is mighty dated.
You should check out the official threads in General and Development.
Also these links are always good to have:
http://get.cm/?device=skyrocket
http://10.1.cmxlog.com/?device=skyrocket
http://changelog.bbqdroid.org/#/skyrocket/next
Hmmm... well do you know if its true that CM10 requires a "Jelly Bean Radio"?
Or am I better off just loading CM9? That way I shouldn't have to modify the radio, right?
Thanks!
Sandmonkee said:
Hmmm... well do you know if its true that CM10 requires a "Jelly Bean Radio"?
Or am I better off just loading CM9? That way I shouldn't have to modify the radio, right?
Thanks!
Click to expand...
Click to collapse
You could try flashing CM9, then it might even say in what radio you have.
Yes, CM10 requires a Jellybean radio.
If you flash the Rogers radio in my signature or the AT&T radio you'll still have AWS and it won't relock your phone.
There's really no reason not to flash a JB radio and CM10.1.. you're not losing out on anything by doing it.
Official JB radios:
R UXUMA7 http://forum.xda-developers.com/showpost.php?p=38195641&postcount=44
UCMC1 http://forum.xda-developers.com/showthread.php?t=2228292
CM10.1 Discussion http://forum.xda-developers.com/showthread.php?t=2138102
CM10.1 Development http://forum.xda-developers.com/showthread.php?t=2138102
Good luck!
lingowistico said:
You could try flashing CM9, then it might even say in what radio you have.
Yes, CM10 requires a Jellybean radio.
If you flash the Rogers radio in my signature or the AT&T radio you'll still have AWS and it won't relock your phone.
There's really no reason not to flash a JB radio and CM10.1.. you're not losing out on anything by doing it.
Official JB radios:
R UXUMA7 http://forum.xda-developers.com/showpost.php?p=38195641&postcount=44
UCMC1 http://forum.xda-developers.com/showthread.php?t=2228292
CM10.1 Discussion http://forum.xda-developers.com/showthread.php?t=2138102
CM10.1 Development http://forum.xda-developers.com/showthread.php?t=2138102
Good luck!
Click to expand...
Click to collapse
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
So I spent pretty much all of yesterday reading up on the subject. Since we were under a tornado watch all day anyways, I really had nothing else to do!
After a while, I found the "secret codes" (listed here: http://forum.xda-developers.com/showthread.php?t=1492700), and punched in *#1234#. This told me that my radio was "T769-UVLB7", which I believe is the 4th one from the bottom on this page: http://forum.xda-developers.com/showthread.php?t=1895400, ie the Blaze radio. That would make sense because it gels with my Android version (4.0.4). Anyways, googling that radio eventually led me to this link: http://forum.xda-developers.com/showthread.php?t=1507825 which had a ton of useful information. So thats the radio mystery solved.
From the same info screen, I could see that my ROM was i727-UCLF6, a somewhat outdated stock ICS rom. So now I know what my phone's current status is in case I need to bring it back because my other combinations don't work for some reason.
So I think I've decided to go with the Pacman JB rom (http://forum.xda-developers.com/showthread.php?t=2178402) and if it doesn't work with my current radio, I'll first try the updated Blaze radio, UVMB1, listed third in that same list I linked to above. If that doesn't work, I'll try the others in that list until I get a combination that does (probably starting with UCMC1). I'm also considering the Jedi Mind Trick T989 rom (http://forum.xda-developers.com/showthread.php?t=1818305). I'll post results when I have them!
Thanks for the help everyone!
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
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Click to collapse
So what you're saying is: AWS for LTE is enabled in Rogers and AT&T, but, it's disabled for HSPA by default.
I was under the impression that 2100 is used for 3G/HSPA by default eitherway, but you're saying it's not?
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
Click to expand...
Click to collapse
Didn't notice any difference after flashing Blaze LB7 radio. Vodafone has 2100 for 3G/HSPA. Already had full signal with RUXUMA7 and it was still full with LB7 and speed was the same (3.7Mbit down/2.6Mbit up)..
lingowistico said:
Didn't notice any difference after flashing Blaze LB7 radio. Vodafone has 2100 for 3G/HSPA. Already had full signal with RUXUMA7 and it was still full with LB7 and speed was the same (3.7Mbit down/2.6Mbit up)..
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Click to collapse
Skyrocket
2G 850/900/1800/1900
3G 850/1900/2100
4G(LTE) 700/1700/2100
http://m.gsmarena.com/samsung_galaxy_s_ii_skyrocket_i727-4303.php
Blaze
2G 850/900/1800/1900
3G 850/1700/1900/2100
4G(LTE) (none)
http://m.gsmarena.com/samsung_galaxy_s_blaze_4g_t769-4420.php
I would recommend you do more reading and reading before you mess with the radio flashing
Good luck
---------- Post added at 04:35 PM ---------- Previous post was at 04:18 PM ----------
lingowistico said:
So what you're saying is: AWS for LTE is enabled in Rogers and AT&T, but, it's disabled for HSPA by default.
I was under the impression that 2100 is used for 3G/HSPA by default eitherway, but you're saying it's not?
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Click to collapse
AWS (Advanced Wireless Service) protocol uses the 2100 for downlink
and the 1700 for uplink..
http://en.m.wikipedia.org/wiki/Advanced_Wireless_Services
The skyrocket has the 2100 in 3G and LTE
but 1700 is not enabled in 3G
Hence the AWS band (UMTS band 4) is not supported in 3G
mahanddeem said:
...
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Click to collapse
Thank you for explaining this, I didn't know all the specifics.
You are correct, the Blaze radio disables LTE and enables AWS.
As you can see here 1700 is not in use in Europe. So the Blaze JB radio is of no use to me.
So in the end, the Pacman JB 4.2.2 ROM worked without a hitch. I did not have to flash the radio at all, it is still working as before.
Baseband still shows up as unknown (the nifty secret codes no longer work), and kernel is now 3.0.72 cyanogenmod.
The phone's working greatI love it when a plan comes together!
What speeds do you get currently on speed test app ?
If your goal is a rom with no bloatware you can debloate a stock tw one...Personally I can never live with cm camera...
At the moment, only about 1.5 MBps, but I am not in a good service area. Even so, everything seems to load quickly.
My only complaints so far would be the ROM itself... already crashed a couple of times, and it has a bizarre way of connecting to the computer (no USB storage mode).
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
Click to expand...
Click to collapse
So it turns out that it may noit have been the ROM after all, but GO Launcher. Everytime I get a new phone, I get sucked in by GO Launcher's sexy looks, but the result is always the same: lagginess and crashes. After switching to Apex launcher, things seem to have settled down.
In terms of the radio, I did some more traveling around today and I would have to say that reception is not as good as it is on my AWS Nexus S, so I might try some different radios after all. Just want to confirm though that if I use an i727 radio (like UCMC1) instead of a T989 radio (like the Blaze radio), I will no longer have access to AWS. Is that right?
Right now I'm thinking UVMB1 from here might be the first stop: http://forum.xda-developers.com/showthread.php?t=1895400
If you ask me , TW stock debloated and tweaked by me is my and always be my rom ...
For the reception, if you have to have the best reception for a network that uses AWS 1700/2100mhz bands for HSDPA/HSPA+ , the skyrocket is not your phone...Or you have to live with issues every now and then...
That's why your nexus s(the T version) has better reception it's a device with native 1700/2100 band support...
Try some other T mobile radios from the blaze,Hercules or galaxy note 1 (remeber you have to use jellybean radios with any jeallybean based rom) and see what gives you best reception, but again don't expect miracles...
Or another note, try a stock jb uvmc6 rom (flash a skyrocket kernel for the roation problem) and uvmc6 radio or another T-Mobile radio as a combo if it is better regarding general network performance...
Edit: answering your question,yes ..skyrocket or Roger's modem will not have 1700/2100 AWS HSPA connectivity...And that "first stop" was my first advice for you...UVMB1 radio...
mahanddeem said:
If you ask me , TW stock debloated and tweaked by me is my and always be my rom ...
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Click to collapse
Hey mahanddeem,
Thanks again for the help. Even after removing Go Launcher, I'm still getting a few random reboots/shutdowns per day - enough to annoy me. I did some searching and found out about the sticky button issue, but I have a feeling thats not my problem. Usually when the phone shuts down on its own, I have to remove the battery before the phone will turn on again. I'm not completely discounting the possibility that I have a sticky button, it just seems odd that the solution involves pulling the battery. That makes it seem more like a software/Rom issue to me, so I'm thinking of going back to a TW-based rom, but I don't want to restore my original stock with all its extra bloat-ware. All that to say that I was hoping you could tell me which de-bloated TW Rom you are using. I've found Embryo, which looks interesting: http://forum.xda-developers.com/showthread.php?t=2074328. Is that what you have?
Or another note, try a stock jb uvmc6 rom (flash a skyrocket kernel for the roation problem) and uvmc6 radio or another T-Mobile radio as a combo if it is better regarding general network performance...
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Click to collapse
Thanks for the suggestion. I'm trying to avoid a full stock ROM, mostly because of the bloatware and branding (I can't stand seeing a corporate logo every time I start my phone!) - this is basically the reason I put a custom ROM on in the first place - plus the extra control of course. If this is the only thing that will stop my phone from randomly rebooting and shutting down though, then I'll have to consider it. Hopefully the stripped down TW version that you recommend will help though.
Edit: answering your question,yes ..skyrocket or Roger's modem will not have 1700/2100 AWS HSPA connectivity...And that "first stop" was my first advice for you...UVMB1 radio...
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Heh heh true enough I still haven't tried flashing anything - I'm still educating myself. The last thing I want to do is start something I can't recover from!
Sandmonkee said:
Hey mahanddeem,
Thanks again for the help. Even after removing Go Launcher, I'm still getting a few random reboots/shutdowns per day - enough to annoy me. I did some searching and found out about the sticky button issue, but I have a feeling thats not my problem. Usually when the phone shuts down on its own, I have to remove the battery before the phone will turn on again. I'm not completely discounting the possibility that I have a sticky button, it just seems odd that the solution involves pulling the battery. That makes it seem more like a software/Rom issue to me, so I'm thinking of going back to a TW-based rom, but I don't want to restore my original stock with all its extra bloat-ware. All that to say that I was hoping you could tell me which de-bloated TW Rom you are using. I've found Embryo, which looks interesting: http://forum.xda-developers.com/showthread.php?t=2074328. Is that what you have?
Thanks for the suggestion. I'm trying to avoid a full stock ROM, mostly because of the bloatware and branding (I can't stand seeing a corporate logo every time I start my phone!) - this is basically the reason I put a custom ROM on in the first place - plus the extra control of course. If this is the only thing that will stop my phone from randomly rebooting and shutting down though, then I'll have to consider it. Hopefully the stripped down TW version that you recommend will help though.
Heh heh true enough I still haven't tried flashing anything - I'm still educating myself. The last thing I want to do is start something I can't recover from!
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I take it you don't know how to root a stock Rom and delete the bloatware yourself?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta
I'm pretty sure I could root it, that much seems within my limited skill set. But first determining HOW to remove the bloatware, and then WHICH things I can safely remove... That I'm not sure of. Besides, if there are already ROM's out there that have done this, why would I duplicate the effort? I'm all in favour of doing things just so I can learn how to do them, but the fact is I have other things I need to do with my time besides fiddling with my phone (family, work, motorbike.... and seemingly endless friggin yardwork!)
Sandmonkee said:
I'm pretty sure I could root it, that much seems within my limited skill set. But first determining HOW to remove the bloatware, and then WHICH things I can safely remove... That I'm not sure of. Besides, if there are already ROM's out there that have done this, why would I duplicate the effort? I'm all in favour of doing things just so I can learn how to do them, but the fact is I have other things I need to do with my time besides fiddling with my phone (family, work, motorbike.... and seemingly endless friggin yardwork!)
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Click to collapse
It's very simple, there are plenty of ways to remove bloat, plenty of guides to do it, and charts that show what things are and if you should remove them.
Embryo would be a nightmare for you. Read the thread. If you don't have the time to research and learn, you should not be flashing things on your phone.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta
Do your researches, it's not gonna happen that anyone here would put a long extensive guide for you so you can "take a look" at it during your coffee time...
Everybody here is learning everyday from others' posts, problems and discussions...So either you put some effort into learning or nobody's gonna spoon feed you..
As a clue , look at Mohan deodexed stock UCMC1,flash,root,start freezing apps that you know you'll not use...Then using any root explorer you can permanently uninstall system apps...And by the way you can use a custom boot animation even on stock,search for how to...

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