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CDMA and HSPA switching

I'm currently running eagles blood 2.3.5 custom rom and my data is wacky. Mostly my data will say 1x which is cdma technology, which I usually get decent speeds with. But now I get H appearing which is HSPA. Is there anyway to keep just the hspa. Apps like Netflix don't work on CDMA and its very annoying. So what's the deal? Is my data wacky or do I need to change my preferred network? It's currently set to WCDMA preferred.
Sent from my LG-P999 using XDA App

I think you mean GSM, not CDMA.
Go to your Settings, Wireless Networks, Mobile Networks, Network Mode, and change it from GSM/WCDMA to WCDMA only. Now if you are anywhere where there is a 3G/4G signal, you will get it instead of the phone switching to a higher 2G signal automatically. However if you are in a 2G area, you will need to switch back to GSM/WCDMA.

no hes right its cdma technology, i think it might be simple, if u go into ur access point simple is probably checked off u need it to be tmobile and hit search networks even if it says error keep doing it until u get the option to choose tmobile , same thing was happening to me on fauxs rom lol i think verizon uses that too it looks like this rite....1X

Iwent into the access point settings and its checked off with T-Mobile. No dice, still switching back and forth. I also live in an aera that has hspa+. Its weird because on my old mytouch slide it was able to just use the hspa network no problem. With this switching its severely draining my battery. People said they can get 24hrs with there phone on this rom, I got 6 today. Thanks for the replies guys, I really appreciate it.
UPDATE: Wi-fi calling works fine which is confusing that I'm still getting 1x when my network settings are all set to t-mobile
Sent from my LG-P999 using XDA App

So i downloaded Elixir and heres the deal:
Eaglesblood:
1X uses CDMA
E uses GSM
H uses HSPA
Stock:
2g uses GSM
4g uses HSDPA
is there anyway to fix the eaglesblood rom so it uses just the 2 like stock does?

Force 2g. Is it possible and how

Most of the reason I rooted my phone was to be able to force my at&t Skyrocket into 2g mode. I get little to no 3g coverage at work and when the phone switches to edge (2g) I get almost full bars. I have tried cm9 rom which has a known issue with forcing 2g anyway but gave it a shot. I also had aokp with no luck. And yes, I went to settings>network>use 2g mode on both roms. Then I went after radios......I know at&t has a rat locked radio so I thought I'd be clever and try the rogers rat unlocked radio. Got really good data speed, call quality, and signal other than work of course. But still didn't allow the force 2g mode. Tried the *#2263# or whatever and it won't even bring up a menu on at&t phones which is understandable because its a rogers thing. Then I tried the trusty ol *#*#4636#*#*. Wouldn't do anything either. Suggestions anyone? Or maybe its just impossible....
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Nevermind
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

You can force the Skyrocket into GSM-only (2G/EDGE), but your ROM has to support it. Sky ICS does, not sure about others.
*Edit: Just tried it on my phone, and it seems to have worked fine.

tmanybill4u said:
Most of the reason I rooted my phone was to be able to force my at&t Skyrocket into 2g mode. I get little to no 3g coverage at work and when the phone switches to edge (2g) I get almost full bars. I have tried cm9 rom which has a known issue with forcing 2g anyway but gave it a shot. I also had aokp with no luck. And yes, I went to settings>network>use 2g mode on both roms. Then I went after radios......I know at&t has a rat locked radio so I thought I'd be clever and try the rogers rat unlocked radio. Got really good data speed, call quality, and signal other than work of course. But still didn't allow the force 2g mode. Tried the *#2263# or whatever and it won't even bring up a menu on at&t phones which is understandable because its a rogers thing. Then I tried the trusty ol *#*#4636#*#*. Wouldn't do anything either. Suggestions anyone? Or maybe its just impossible....
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
You can on cm9 by first going to "select network operator" and choosing at&t. Then 2g networks only will stick. Thank cschmitt for this.
sent from my part of the problem

Sorry to mention I'm on Straight Talk. Should that matter? Don't think so
Sent from my SGH-I727 using xda app-developers app

T.J. Bender said:
You can force the Skyrocket into GSM-only (2G/EDGE), but your ROM has to support it. Sky ICS does, not sure about others.
*Edit: Just tried it on my phone, and it seems to have worked fine.
Click to expand...
Click to collapse
Greeting from Hong Kong.
I encounter the same problem. The 3G (WCDMA2100) signal at my home is too low (<-110dbm) to make a call but my Skrocket could not switch to the 2G network (GSM900 with -85dbm) automatically. I wonder if anyone has an apps that could switch the phone to 2G mode through the servicemode menu (*#2263#, 3, 6) and then back to 3G mode (*#2263#, 2, 6).
Bender mentioned that a Sky ICS ROM could do it. Please let me know where I can obtain this ICS. Thanks very much.

http://forum.xda-developers.com/showthread.php?t=1763195
Sent from my SAMSUNG-SGH-I727 using xda premium

yip2727 said:
Greeting from Hong Kong.
I encounter the same problem. The 3G (WCDMA2100) signal at my home is too low (<-110dbm) to make a call but my Skrocket could not switch to the 2G network (GSM900 with -85dbm) automatically. I wonder if anyone has an apps that could switch the phone to 2G mode through the servicemode menu (*#2263#, 3, 6) and then back to 3G mode (*#2263#, 2, 6).
Bender mentioned that a Sky ICS ROM could do it. Please let me know where I can obtain this ICS. Thanks very much.
Click to expand...
Click to collapse
I have installed ICS build 4.2F6R2 on my Skyrocket but still could not force my phone to 2G network. How can I do it please?? Thanks.

I have installed ICS build 4.2F6R2 on my Skyrocket but still could not force my phone to 2G network. How can I do it please?? Thanks.
Click to expand...
Click to collapse
setings, more, mobile networks? Or something similar.
I was wanting to do this without flashing a rom. I am running stock ICS AT&T i727UCLF6.
I have the same problem where i don't get very good 3g service, drop calls all the time and would just like to force it into 2g mode while at work. Why would this be removed from the rom should be a basic feature.

Install RAT unlocked modem, *#2263# and picking specific band that is supported by your provider suppose to work. Tho it's not gonna work on CM/AOSP based roms. It will work on att phones.

kishke said:
Install RAT unlocked modem, *#2263# and picking specific band that is supported by your provider suppose to work. Tho it's not gonna work on CM/AOSP based roms. It will work on att phones.
Click to expand...
Click to collapse
Thanks very much. Flashed the Rogers Offical ICS modem found here. [MODEM]Official Rodgers..Release Modem- UXLF3
I am able to change to 2g mode only now. However i was wondering if there is a possibility of automating the process via an app, instead of using the *#2263# via the dialer?
For G only: *#2263#, choose option 3 GSM band preference, Then GSM 1900 I did not get 2g on this option but I hear from others that you can.
For 2g only: *#2263#, choose option 3 GSM band preference, Then GSM 850 Never dropped to G but has the possibility to.
For 3g/HSPA only: *#2263#, choose option 2 WCDMA band preference, Then WCDMA 1900 or 850
To return to normal: *#2263#, Choose Automatic.
I don't have LTE in my area but I believe you can choose LTE B17 from LTE option to have LTE only. Didn't buy for LTE but because it was the best device (specs) through AT&T at the time.

Jnewell05 said:
Thanks very much. Flashed the Rogers Offical ICS modem found here. [MODEM]Official Rodgers..Release Modem- UXLF3
I am able to change to 2g mode only now. However i was wondering if there is a possibility of automating the process via an app, instead of using the *#2263# via the dialer?
For G only: *#2263#, choose option 3 GSM band preference, Then GSM 1900 I did not get 2g on this option but I hear from others that you can.
For 2g only: *#2263#, choose option 3 GSM band preference, Then GSM 850 Never dropped to G but has the possibility to.
For 3g/HSPA only: *#2263#, choose option 2 WCDMA band preference, Then WCDMA 1900 or 850
To return to normal: *#2263#, Choose Automatic.
I don't have LTE in my area but I believe you can choose LTE B17 from LTE option to have LTE only. Didn't buy for LTE but because it was the best device (specs) through AT&T at the time.
Click to expand...
Click to collapse
Not for our phones for ics. With a rogers based radio on gb yes. So u have to pick, pics and manual, or gb and app.

Which app works with gingerbread?

[Q] How to get 3G/4G with unlocked Blaze on AT&T

I bought one of these phones, rooted it, unlocked it, and installed CM9. I love the phone and OS, but I cannot get the 3G/4G to work on AT&T. Any ideas?

Yeah. The data network is incompatible. Different frequency.
Sent from my SGH-T769 using xda premium

Yeah I think all you can get is 2G (edge) on AT&T with the blaze.

I can say from first hand experience that the blaze works great with AT&T's 3g service. I bought this phone last week, unlocked it, and swapped in the sim from my old Aria and have been using it with CM10 ever since. Data speeds are around 3 to 6 Mb/s down and 1 Mb/s up, and voice and text messaging works fine.
For a more technical answer, AT&T uses the 850 mhz and 1900 mhz frequencies for UMTS (3g), and T-mobile uses 1700 mhz and 2100 mhz frequencies. The blaze supports UMTS on all of these frequencies so there are no technical roadblocks to using this phone with AT&T. http://www.phonearena.com/phones/Samsung-Galaxy-S-Blaze-4G_id6824
As for your problem of not getting 3g working, I had similar issues when first switching the sim card (especially on the stock rom). Check that your APN matches the one your old phone was using. On the stock rom, the phone did not auto detect the correct APN and this caused the 3g to not work. CM10 detected the correct APN right away though. Also, try turning data off and on or even rebooting the phone once you've checked your network settings.

I sold my other phone and no longer have it. Please confirm your APN settings, and how do I change them?

The blaze has all the frequencies necessary for it to do HSPA (3G/4G) on AT&T's networks.
You'll likely want to change the APN. On CM9/10, go to Settings -> Wireless & Networks + More... -> Mobile Network Settings -> Access Point Names.

I was careful in selecting this specific phone because of its compatibility with AT&T HSPA bands. I have tried the suggested tweaks to the APN settings within both CM9 and CM10, but I still get no visual notification that the phone is operating in 3G or 4G mode. The areas in which I have used the phone consistently provided 3G and/or 4G coverage consistently with my prior BlackBerry 9860.
Any additional tips/tricks would certainly be appreciated. I know this phone is capable of so much more than it's providing me at this point.

nellans57 said:
I was careful in selecting this specific phone because of its compatibility with AT&T HSPA bands. I have tried the suggested tweaks to the APN settings within both CM9 and CM10, but I still get no visual notification that the phone is operating in 3G or 4G mode. The areas in which I have used the phone consistently provided 3G and/or 4G coverage consistently with my prior BlackBerry 9860.
Any additional tips/tricks would certainly be appreciated. I know this phone is capable of so much more than it's providing me at this point.
Click to expand...
Click to collapse
have you tried running a speed test to see if maybe it's just that the icon isn't coming up?

That is why it was called the "Merger Proof Phone"

Skyrocket i727 with Tmobile at LTE/4G Speeds

Guys,
I just noticed my SGII gets LTE Mobile network type at work today. Below is my what I have.
Unlocked ATT Skyrocket i727
[ROM][OFFICIAL][CyanogenMod 10.1 Nightlies for Skyrocket] Build 0609
RADIO UCMC1
You don't need expensive TMobile iPhone 5 to get LTE speed.
Good luck and have fun!!

What's you location ?

mahanddeem said:
What's you location ?
Click to expand...
Click to collapse
Dallas Campbell, TX I think T-Mobile just have their network re-farm done here recently.
See HERE for the re-farm map.

Thank you. I live in Lewisville but my cousin told me all the Carlton area he was getting LTE. Do you also get 3g or HSPA+ because on mine i get 3g for sometime then i have no signal at all. i have click on 2g network only to get signal. Also which APN are you using?

justforgot;42621621. switchyou. I live in Lewisville but my cousin told me all the Carlton area he was getting LTE. Do you also get 3g or HSPA+ because on mine i get 3g for sometime then i have no signal at all. i have click on 2g network only to get signal. Also which APN are you using?[/QUOTE said:
Yes, I get HSPA+ / 3G too.
fast.t-mobile com is the APN that I am using.
You can use *#*#4636#*#* to change your preferred network type. I am using LTE/GSM auto (PRL)
Click to expand...
Click to collapse

Thank you. And one more question if i do this
You can use *#*#4636#*#* to change your preferred network type. I am using LTE/GSM auto (PRL)
Will i get both lte and 3g/hspa because i'm stuck at Edge but i know my area have good service. Because on my mom's iphone 3g it does have 3g signal it uses 1900 mhz

There messing with the 4g as I type this in warren/Detroit Michigan not yet strong enough to get a speed test. will update
Edit: here's lte

justforgot said:
Thank you. And one more question if i do this
You can use *#*#4636#*#* to change your preferred network type. I am using LTE/GSM auto (PRL)
Will i get both lte and 3g/hspa because i'm stuck at Edge but i know my area have good service. Because on my mom's iphone 3g it does have 3g signal it uses 1900 mhz
Click to expand...
Click to collapse
Sure you can get LTE/HSPA+/HSPA/3G(UMTS)/EDGE with that depends on how strong the T-Mobile signal is at your location.

Yeah. I tried everything but no luck. My cousin had lte on his iPhone at my house. My s1 have 3g/h on it running 1900 mhz. I'm stuck on 2g or just no signal at all
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

justforgot said:
Yeah. I tried everything but no luck. My cousin had lte on his iPhone at my house. My s1 have 3g/h on it running 1900 mhz. I'm stuck on 2g or just no signal at all
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
Does it stay on the Network type when you change it? Is 'use only '2G networks' option enabled on your Mobile network settings?
Try to flash to another RADIO and flash back to UCMC1 on CWM. If it still doesn't work, flash to stock AT&T ROM and make sure you can get other than EDGE speed and then flash CM 10.1.
Good luck.

Thank you. I'll Do As you say Tommorow. Eariler when i flashed 10.1 on this phone i had 3g/hspa but after half day i got pushed back to edge. After that i never got 3g/hspa. I have to check the 2g Networks only if i don't my phone won't get any signal.

justforgot said:
Thank you. I'll Do As you say Tommorow. Eariler when i flashed 10.1 on this phone i had 3g/hspa but after half day i got pushed back to edge. After that i never got 3g/hspa. I have to check the 2g Networks only if i don't my phone won't get any signal.
Click to expand...
Click to collapse
That explains why you get EDGE 2 because of that. I suggest you to diable 'use only '2G networks' option and to flash [RADIO][UXUMA7] For I727/I727R on CWM to see if can get HSPA+/3G first after that.

Still stuck on Edge. I tried *#*#4636#*#* method but still no luck.

justforgot said:
Still stuck on Edge. I tried *#*#4636#*#* method but still no luck.
Click to expand...
Click to collapse
Sounds like you do need to flash the ROMs like I have suggested.

I'm on cm 10.1 regular cyanogen and did flash ucmc1 but still no luck.

Getting LTE speeds on mine unrooted and not flashed. On fast t-mobile APN.

/\
Surprising to find a rocket still on GB !!! lol
Good speeds you're getting.,

Yeah. I notice that too.
I did get utms signal but couldn't access data.
Re-flashing stock 4.1.2
Sent from my LG-P999 using xda app-developers app

mahanddeem said:
/\
Surprising to find a rocket still on GB !!! lol
Good speeds you're getting.,
Click to expand...
Click to collapse
Yea, looks like CM 10.1 should be nearing a stable release soon so I'll root it then. I'm coming from a HTC Glacier since the devs decided to stop supporting it.
One thing's for sure though, LTE tends to burn through my battery. I hope it gets better once it's rooted.
Did you get better reception when you flashed the i757m radio?

justforgot said:
Still stuck on Edge. I tried *#*#4636#*#* method but still no luck.
Click to expand...
Click to collapse
I am running Embryo 6.11 (JB 4.1.2) ROM using T-Mobile's SIM, and was able to get LTE using both the UCMC1 and UXUMA7 radios. However, the phone defaults to EDGE when outside of the LTE area, instead of switching to HSPA+/HSPA 3G. Using *#*#4636#*#*, my network selector is set to LTE/WCDMA/GSM. I would have to manually set it to WCDMA only to pick up HSPA+/HSPA. Then when I toggle back to LTE/WCDMA/GSM, the radio picks up HSPA+/HSPA. Hope this helps!

[Q] 4G LTE/HSPA+ on Net10 with Skyrocket

Okay, so heres the deal. I currently have a Skyrocket running CM 10.1 with the UVMC6 radio on Net10 T-Mobile SIM. I my home town of West Bend, WI I get H+ and decent speeds of about 6Mbps down. When I'm in Milwaukee, WI I occasionally get "DC" (Dual Carrier?) with some pretty impressive downspeeds of 20Mbps. I have LTE enabled on my phone but I have never gotten a 4G or LTE indication when in Milwaukee. Which I believe is a T-Mobile LTE area. So my question is if I switch to AT&T SIM on Net10, will I get 4G LTE speeds? It is not specifically indicated on Net10's site that I will, but they sell LTE phones.
Thanks!

It all depends on what net 10 (or whatever) are providing...I doubt those MVNO networks offer LTE from the patent networks at this moment, though I might be mistaken...That 20 mbps you get is HSPA+(DC is HSPA+21 x 2 = HSPA+42)...They sell LTE phones doesn't mean anything, most modern phones nowadays are LTE phones....
However, if you join T-Mobile(T-Mobile proper that is ) and in an area which is one of the official LTE launch cities, you can connect to it using the stock SR radio...
To know the type of network you're connected to, go to settings/About device(or phone)/Status

saleenman95 said:
Okay, so heres the deal. I currently have a Skyrocket running CM 10.1 with the UVMC6 radio on Net10 T-Mobile SIM. I my home town of West Bend, WI I get H+ and decent speeds of about 6Mbps down. When I'm in Milwaukee, WI I occasionally get "DC" (Dual Carrier?) with some pretty impressive downspeeds of 20Mbps. I have LTE enabled on my phone but I have never gotten a 4G or LTE indication when in Milwaukee. Which I believe is a T-Mobile LTE area. So my question is if I switch to AT&T SIM on Net10, will I get 4G LTE speeds? It is not specifically indicated on Net10's site that I will, but they sell LTE phones.
Thanks!
Click to expand...
Click to collapse
Here's your answer after a google search for "net 10 lte".
http://prepaidcellforum.com/threads/does-net10-have-4g-lte-coverage.235/

lingowistico said:
Here's your answer after a google search for "net 10 lte".
http://prepaidcellforum.com/threads/does-net10-have-4g-lte-coverage.235/
Click to expand...
Click to collapse
I saw that too, I just wanted more than one opinion, and quite frankly I trust the people on this site more than any other.
mahanddeem said:
It all depends on what net 10 (or whatever) are providing...I doubt those MVNO networks offer LTE from the patent networks at this moment, though I might be mistaken...That 20 mbps you get is HSPA+(DC is HSPA+21 x 2 = HSPA+42)...They sell LTE phones doesn't mean anything, most modern phones nowadays are LTE phones....
However, if you join T-Mobile(T-Mobile proper that is ) and in an area which is one of the official LTE launch cities, you can connect to it using the stock SR radio...
To know the type of network you're connected to, go to settings/About device(or phone)/Status
Click to expand...
Click to collapse
Thanks! I was wondering how I could be getting speeds that fast without LTE. Also, is HSPA+ is rated for 42Mbps then how fast is LTE rated for and is the 20Mbps down that I am getting relatively high for cellular speeds these days?

It depends on tons of factors...HSPA+ at 20mbps is faster than the LTE I get....The only real plus to the LTE is the excellent low ping latency...

saleenman95 said:
I saw that too, I just wanted more than one opinion, and quite frankly I trust the people on this site more than any other.
Click to expand...
Click to collapse
You shouldn't trust any people or site more than what your carrier tells you. If I were you I would've just called / emailed net ten and asked them directly :good:

lingowistico said:
You shouldn't trust any people or site more than what your carrier tells you. If I were you I would've just called / emailed net ten and asked them directly :good:
Click to expand...
Click to collapse
hahahaha....if you know how to turn your phone on by yourself than you know more than the customer service people at net10/straight talk. They only know how to read off their script cards. They have tried telling me that my phone is incapable of mms when i was having problems with the stock apn they provided. I wouldnt trust any infomation they tell you.

Those MVNO networks and their customer rep suck big time to be helpful at all....

I use my Skyrocket on Net10 AT&T SIM and the best I have ever gotten is HSPA+ 21.6 even in an LTE area... Net10 SIMs don't allow connecting to LTE networks.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

acejavelin said:
I use my Skyrocket on Net10 AT&T SIM and the best I have ever gotten is HSPA+ 21.6 even in an LTE area... Net10 SIMs don't allow connecting to LTE networks.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
More like Net Ten doesn't offer LTE.

ATT LTE on NET10!
lingowistico said:
More like Net Ten doesn't offer LTE.
Click to expand...
Click to collapse
They do now as of September 2013...I believe you have to get a new simm for $5 from their website to enable ATT LTE

Straight talk is now offering att lte as well.just ordered my new sim for that.will see how it goes.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Well I got my SIM in the mail yesterday and did the transfer. Checked all the APN settings, but I don't have LTE. Yet my friend standing right next to me with an S4 on att is getting LTE. Hmmm.

saleenman95 said:
Well I got my SIM in the mail yesterday and did the transfer. Checked all the APN settings, but I don't have LTE. Yet my friend standing right next to me with an S4 on att is getting LTE. Hmmm.
Click to expand...
Click to collapse
If the frequencies are the same as Rogers / AT&T then there's no reason for you to not have it. Try doing more troubleshooting.

lingowistico said:
If the frequencies are the same as Rogers / AT&T then there's no reason for you to not have it. Try doing more troubleshooting.
Click to expand...
Click to collapse
That's what I figured, I mean it's an ATT phone after-all so if should work with their LTE. But after some troubleshooting I discovered that my phone will not enable LTE for whatever reason. I will go into the settings menu and select GSM/WCDMA/LTE and it just auto switches back to GSM/WCDMA preferred. I am currently running CM 10.1.3 RC2 with UCMC1 radio, so I will try re-flashing that radio to see if it helps, but I don't know what else would cause this.

saleenman95 said:
That's what I figured, I mean it's an ATT phone after-all so if should work with their LTE. But after some troubleshooting I discovered that my phone will not enable LTE for whatever reason. I will go into the settings menu and select GSM/WCDMA/LTE and it just auto switches back to GSM/WCDMA preferred. I am currently running CM 10.1.3 RC2 with UCMC1 radio, so I will try re-flashing that radio to see if it helps, but I don't know what else would cause this.
Click to expand...
Click to collapse
Try Rogers RUXUMA7 radio, I think that the UCMC1 radio has some kind of lock which prevents you from switching modes.

lingowistico said:
Try Rogers RUXUMA7 radio, I think that the UCMC1 radio has some kind of lock which prevents you from switching modes.
Click to expand...
Click to collapse
Well I don't know what happened, but it just out of the blue started showing 4G and LTE. So now it works and I'm getting 25Mbps down!

Rogers radio is working better at keeping lte enabled for me. I am on an older net10 sim and after calling customer service they updated my account and its working although my lte ping times are very similar to hspa... I'm on slim 4.3 build 1
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

saleenman95 said:
That's what I figured, I mean it's an ATT phone after-all so if should work with their LTE. But after some troubleshooting I discovered that my phone will not enable LTE for whatever reason. I will go into the settings menu and select GSM/WCDMA/LTE and it just auto switches back to GSM/WCDMA preferred. I am currently running CM 10.1.3 RC2 with UCMC1 radio, so I will try re-flashing that radio to see if it helps, but I don't know what else would cause this.
Click to expand...
Click to collapse
I have the exact same problem. 20 minutes on the phone with Net10 today and they said I would have to contact the manufacture(Samsung) to get LTE. Made no sense.

Go to network operator, scan and pick att from the list. Then try changing the mode to lte/gsm/wcdma and it should stick. Was happening to me too but this fixed it
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