I got an AT&T skyrocket SGH-1727 from my brother from the states. I am currently in the Philippines.
I unlocked the phone and flashed the latest JB radio rom and CM 10.2 stable rom. The problem is I do not get GSM/2G signal. My phone can connect to 3G and LTE but in areas were there are no 3G and LTE outside of the city, my phone just couldn't connect to 2G. I tried several radios like UXMA7 for Rogers skyrocket and even the TMobile UVMC6 T989 radio. I feven experimented with several roms and went back to stock but the scenario is still the same.
Is this because the phone is not compatible to the 2G frequencies in the Philippines which is 900 and 1800?
Is there a workaround to this?
Regards.
jms2367 said:
I got an AT&T skyrocket SGH-1727 from my brother from the states. I am currently in the Philippines.
I unlocked the phone and flashed the latest JB radio rom and CM 10.2 stable rom. The problem is I do not get GSM/2G signal. My phone can connect to 3G and LTE but in areas were there are no 3G and LTE outside of the city, my phone just couldn't connect to 2G. I tried several radios like UXMA7 for Rogers skyrocket and even the TMobile UVMC6 T989 radio. I feven experimented with several roms and went back to stock but the scenario is still the same.
Is this because the phone is not compatible to the 2G frequencies in the Philippines which is 900 and 1800?
Is there a workaround to this?
Regards.
Click to expand...
Click to collapse
goto >settings>more>mobile networks>network mode> make sure gsm is picked
vincom said:
goto >settings>more>mobile networks>network mode> make sure gsm is picked
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Click to collapse
Thanks vincom, but when I select that option, the phone loses signal. I tried several sim on different networks. Still it does not work in 2G mode.
Related
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.
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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.
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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.
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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?
well im new to android i moved from blackberry a couple days ago
anyway i have a problem i cant get my phone to move from 2g to 3g,its the at&t version and im currently on the digicel jamaica carrier
iv went into mobile networks but there is no option to change so i tried dialing *#*#4636#*#* as i saw on the forums but i didnt get any popup or anything
im running stock android 4.0.4 and my phone is rooted and unlocked..any suggestion ?
the att modem won't let you change the frequencies. Keep reading about the bell modems it looks like you need 900mhz umts/hsda but the att modem won't use that frequency for anything about edge. I think the bell modem opens up 900(not sure about the T989 as I don't think t-mobile uses 900 for umts).
The frequency bands are fine (digicell uses 850 & 1900 bands for 3G, just like AT&T). There's a lot of confusing info on the net, most of it because GSM and UMTS (3G) frequencies are different and people get confused.
You need the correct APNs entered to go 3G.
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
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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.,
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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!
I have an unlocked Samsung Galaxy S2 Skyrocket, and I have just been getting 3G and H+ where I live (Arkansas) and we just got LTE in our area. And I was wondering what radio I should use, or if I do need one because it has not shown LTE up in the Signal Icon. I'm currently running the T989UVMC6 Radio. I've also tried going into Mobile Network Settings and changing it from GSM/WCDMA Preffered to LTE/GSM/WCDMA and also changing the access point name from the T-Mobile-US one to T-Mobile-US LTE. So if you could help me out with that it'd be great. Thanks!
Rehab4Life said:
I have an unlocked Samsung Galaxy S2 Skyrocket, and I have just been getting 3G and H+ where I live (Arkansas) and we just got LTE in our area. And I was wondering what radio I should use, or if I do need one because it has not shown LTE up in the Signal Icon. I'm currently running the T989UVMC6 Radio. I've also tried going into Mobile Network Settings and changing it from GSM/WCDMA Preffered to LTE/GSM/WCDMA and also changing the access point name from the T-Mobile-US one to T-Mobile-US LTE. So if you could help me out with that it'd be great. Thanks!
Click to expand...
Click to collapse
this sticky was right above your post READ THIS B4 POSTING | THE MOST Common Questions Answered HERE , read 1c or go the 1stop sticky and read the radio section, link in my sig
LTE on T-Mobile using Skyrocket Embryo 6.11 Custom ROM
Rehab4Life said:
I have an unlocked Samsung Galaxy S2 Skyrocket, and I have just been getting 3G and H+ where I live (Arkansas) and we just got LTE in our area. And I was wondering what radio I should use, or if I do need one because it has not shown LTE up in the Signal Icon. I'm currently running the T989UVMC6 Radio. I've also tried going into Mobile Network Settings and changing it from GSM/WCDMA Preffered to LTE/GSM/WCDMA and also changing the access point name from the T-Mobile-US one to T-Mobile-US LTE. So if you could help me out with that it'd be great. Thanks!
Click to expand...
Click to collapse
I was able to get LTE on T-Mobile using the UCMC1 and UXUMA7 radios for Jelly Bean. I am running Embryo 6.11 JB custom ROM. Flashing the regular T-Mobile radios only allowed me to get HSPA/HSPA+ in LTE areas.
About a month ago I was in an LTE area and browsing xda and noticed a radio update so wanting the latest version I immediately flashed it. I noticed on rebooting that my lte wasn't working and I thought that the settings had just been corrupted but after a full re flash of the system and the modem I still can't get LTE in an area where other 4G phones can. However my HSPA+ works fine pulling 20mbps next to a cell tower.
Wondering if anyone can help?
Network details:
Three UK Lte bands 3/20
Phone
Nexus 5 D821UK
Why don't you flash the old radio on which LTE worked fine?
vin4yak said:
Why don't you flash the old radio on which LTE worked fine?
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Click to collapse
I did, still no change. I thought that would be the solution too. I might be onto something but not sure? On the APN settings does having the bearer set to LTE make a difference, I never noticed before but noticed that it wasn't set now.