Database Info

Dropped Connection to Network Problem

my phone will drop connection and then not reconnect. no voice, no data. (wifi still works)
what I've tried:
1. Different radios/firmware
2. different roms
3. different preferred network types
4. switching airplane mode on and off
what I haven't tried:
1. different sim
2. calling tmobile for suggestions
What else could cause this problem?

it could be a hardware issue

Hello,
I have the same issue than you !
I am facing issues such as call drop and no 3G data connection in some area in my region since I have 5 signal bar and H letter displayed (HSDPA connection)...
I have found a workaround consisting in:
1 - Switching to GSM Only mode (2G Only)
2 - Desabling Mobile Data Connection
Then it works, I can pass and receive voice call ...
Regards,
Nino

I'm new to the Sensation and having the exact same issue.
Followed the stickies in the Dev section to S-OFF, root and bypass SIM lock and then once the SIM card is inserted I get only GSM and no data.
If you use *#*#4636#*#* in the Dialer and go to Phone Information do you notice that it always switches to WCDMA preferred? I change to GSM/CDMA auto PRL like all my other Android devices (on Rogers Wireless) and it disconnects, reconnects but only for GSM and no data. It sometimes says it's connected to EDGE or HSPA but no icon at the top right and then it reverts back to GSM.
I have also tried flashing virtually every firmware, ensuring that the radio and RILs match (I had an HTC Desire Z so the HTC phones are not new to me entirely). I don't know what else to do. I tried a Bell SIM card and tried all of the same options to no avail.
I really hope someone can figure this out. I don't want to have destroyed a phone that I just bought for my wife. Her Atrix broke and I purchased that outright as well, so this is really killing my wallet. I've been through about 10 Android devices and I wouldn't say I'm a newb, but I really do feel like one right now. This sucks!

Get a new sim from tmo if it's over 2 phones old.
Sent from my HTC Sensation 4G with Beats Audio using Tapatalk

mrbkkt1 said:
Get a new sim from tmo if it's over 2 phones old.
Sent from my HTC Sensation 4G with Beats Audio using Tapatalk
Click to expand...
Click to collapse
Exactly. Although I got it before I saw your post, you were completely correct.

definitely try a new sim card.
bongd said:
I'm new to the Sensation and having the exact same issue.
Followed the stickies in the Dev section to S-OFF, root and bypass SIM lock and then once the SIM card is inserted I get only GSM and no data.
If you use *#*#4636#*#* in the Dialer and go to Phone Information do you notice that it always switches to WCDMA preferred? I change to GSM/CDMA auto PRL like all my other Android devices (on Rogers Wireless) and it disconnects, reconnects but only for GSM and no data. It sometimes says it's connected to EDGE or HSPA but no icon at the top right and then it reverts back to GSM.
I have also tried flashing virtually every firmware, ensuring that the radio and RILs match (I had an HTC Desire Z so the HTC phones are not new to me entirely). I don't know what else to do. I tried a Bell SIM card and tried all of the same options to no avail.
I really hope someone can figure this out. I don't want to have destroyed a phone that I just bought for my wife. Her Atrix broke and I purchased that outright as well, so this is really killing my wallet. I've been through about 10 Android devices and I wouldn't say I'm a newb, but I really do feel like one right now. This sucks!
Click to expand...
Click to collapse

I've tried 5 different SIMs now. It's not a SIM issue. The other poster has a different issue but mine's identical to the OP's.

bongd said:
I've tried 5 different SIMs now. It's not a SIM issue. The other poster has a different issue but mine's identical to the OP's.
Click to expand...
Click to collapse
have you tried allowing data roaming in settings? I'm sure you have...

stonew5082 said:
have you tried allowing data roaming in settings? I'm sure you have...
Click to expand...
Click to collapse
Haha yup, thanks though! I know, it could always be something so tiny and stupid too, eh.
Someone posted in my own thread and said to do the following. Will by trying it once I get home. Could the OP please try this and report back? I sure hope it works!
johnerz said:
first open the dialer
Type *#*#4636#*#*
select phone info
look for the only drop down box - hit it - choose wcdma prefered - hit back 3 times
Go to menu settings woreless and networks
hit mobile network - it need to be ticked
hit mobile networkS hit APN or Access point names - hit the menu button - choose reset to defaults
go back to mobile networks - choose network mode, select wcdma only - look for the 3G or h sign when it shows go back and choose gsm/wcdma auto
if that fails do a manual net work selection - choose your networks 3G option
Click to expand...
Click to collapse

bongd said:
Haha yup, thanks though! I know, it could always be something so tiny and stupid too, eh.
Someone posted in my own thread and said to do the following. Will by trying it once I get home. Could the OP please try this and report back? I sure hope it works!
Click to expand...
Click to collapse
I did try every setting in there. The new sim card fixed it! So I guess our problems are different.

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?

CM10 enables global compatibility

Hello,
I've been running more than one ROM on SGSIII and I can confirm that CM10 (build 8/28) provides full service globally (data + calls)... Beans ROM and CleanROM worked for calls only since there was no simple way to edit APNs, they also had problems with com.android.phone, its was FC.
I flashed CM10 build 8/25, I got data but whenever I make or receive a call the phone freezes. Yesterday I flash build 8/28, and everything is working fine on it. I can make and receive calls normally, and I can use 3G as well.
Just wanted to let you know in case you want to use the phone on a network other than Verizon and you don't want to go through all the steps in the Development Section.

SamerBerjawi said:
I flashed CM10 build 8/25, I got data but whenever I make or receive a call the phone freezes. Yesterday I flash build 8/28, and everything is working fine on it. I can make and receive calls normally, and I can use 3G as well.
Click to expand...
Click to collapse
Hi,
You said you can use 3G as well, would you mind which other (Non-Verizon) GSM carrier you used and were able to get 3G working? Was it a US domestic carrier or a foreign carrier?
Thank you

Wish I had this phone in Nov. Just back in May from a westpac cruise
Sent from my SCH-I535 using xda app-developers app

Yeah, what provider's SIM are you using? Is it AT&T or foreign? Also, did you need to change APN or it automatically pulled it in? Exactly what ROM are you using?

For real mayne let's get some more info!

I mean, I've been able to use T-Mobile and AT&T's SIMs in my Verizon GS3 since day one, stock TouchWiz, and now CM10, BUT NO DATA. I've always been able to make calls and text messages, but you can't touch the APN settings, so no data. Am I missing something? How did you get data to flow?

I'm using it in Lebanon, specifically using MTC Touch network. It is GSM and the frequency I believe is 850. I read on some Lebanese forums that they use 2100 as 3G frequency.
I'm using CM10 build 8/28, on previous builds, data worked but on calls the phone used to crash. On 8/28 it is working perfectly. It just doesnt show the signal strength in the notification bar.

I didnt even have to update the APN, they were pulled automatically.

SamerBerjawi said:
I'm using it in Lebanon, specifically using MTC Touch network. It is GSM and the frequency I believe is 850. I read on some Lebanese forums that they use 2100 as 3G frequency.
I'm using CM10 build 8/28, on previous builds, data worked but on calls the phone used to crash. On 8/28 it is working perfectly. It just doesnt show the signal strength in the notification bar.
Click to expand...
Click to collapse
Do you mind posting a video or a screenshot of your build? Thank you!

these are from Phone Information (using Phone Info app)

SamerBerjawi said:
these are from Phone Information (using Phone Info app)
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Click to collapse
Oh wow! So a foreign SIM will pull in the APN settings! My AT&T and T-Mobile will get me EDGE where it says UMTS. But in your case the signal is not reading at the notification bar, and it lists Verizon Wireless.
This means SGS3 is already unlocked for global carriers!
I assume the future update will just fix the signal reading and allow us to change the APN.
Thanks for your post!

no it is not unlocked, it didnt work on stock. CM10 unlocks it.

SamerBerjawi said:
no it is not unlocked, it didnt work on stock. CM10 unlocks it.
Click to expand...
Click to collapse
On stock Voice and SMS was also unlocked on domestic. With CM10 I get the same voice and sms. Data is a no go except for international carriers. I have 08/28 build and still no data for me.

If it is anything like the Rezound, it comes SIM unlocked from the factory, but the stock TW framekwork may not support the full GSM capabilities yet. CM10 doesn't sim unlock it, it just adds the missing code.

What part of lebanon are you from? im From tripoli myself, have you tested this on alfa at all?. id like to know if i can use my phone when im there next month I have an alfa sim tho.

Pyrot1c said:
What part of lebanon are you from? im From tripoli myself, have you tested this on alfa at all?. id like to know if i can use my phone when im there next month I have an alfa sim tho.
Click to expand...
Click to collapse
it should work on alfa as well, I only tried with mtc in Beirut.

Did you have to make any changes to the phone settings or give unlock codes? or was it simply swapping the SIM card? I'm looking to do this on future travels to south America. For example looking to work on Movistar Venezuela (GSM 850 and HSDPA 1900

Hi, did signal bar work at your end?
I flashed the CM10 M2 recently but signal bar appeared blank(so signal at all), and -120dB at status in settings (both EDGE/HSPA/GSM)
Even though I can dial someone, strange.
---------- Post added at 04:45 AM ---------- Previous post was at 04:41 AM ----------
milan03 said:
On stock Voice and SMS was also unlocked on domestic. With CM10 I get the same voice and sms. Data is a no go except for international carriers. I have 08/28 build and still no data for me.
Click to expand...
Click to collapse
Try CleanROM, install APN Manager Pro and convert it to system app in Titanium Backup, and you're ready to go to edit your APN settings.

levird said:
Hi, did signal bar work at your end?
I flashed the CM10 M2 recently but signal bar appeared blank(so signal at all), and -120dB at status in settings (both EDGE/HSPA/GSM)
Even though I can dial someone, strange.
---------- Post added at 04:45 AM ---------- Previous post was at 04:41 AM ----------
Try CleanROM, install APN Manager Pro and convert it to system app in Titanium Backup, and you're ready to go to edit your APN settings.
Click to expand...
Click to collapse
If you plan to use a GSM SIM flash the AT&T CM10 version. You have to change the name of the device from d2att to d2vzw in the install script or CWM won't let you flash it.

SamerBerjawi said:
these are from Phone Information (using Phone Info app)
Click to expand...
Click to collapse
What do these screenshots show. Mine says the same in Texas.

[Q] Problem with 3G radio on HTC Doubleshot - uplink dead, downlink ok

I've been happily using an HTC MT4G Slide/Doubleshot I got on Ebay since December (I'm in Canada, using it with Wind Mobile, AWG 3G bands). Last Sunday my phone suddenly started showing "No Signal" for the cellular connection (wifi still works just fine), even though I had full signal bars, and I was unable to complete calls, even the *611 carrier service calls. With the Wifi turned off, I noticed I was still receiving emails, oddly enough, even though I could not register on my network. My SIM was working fine in other phones, and a SIM from another carrier (GSM 2G only) worked just fine. I tried a new SIM from my carrier, no luck, same thing.
I know AWS splits its up/downlinks between the 2 sets of bands it uses (1700MHz for up, 2100MHz for down), so I'm guessing something strange happened to selectively knock out the up bands only. But what? My phone is on EmmanuelU's KitKatDS 1.3, but the only unusual thing I could think of software wise was that I had recently updated Xposed framework to the latest version. I though maybe that did something weird to the baseband firmware, so I restored the original stock Gingerbread ROM via ClockworkMod - no change. I applied the available OTA updates from T-Mo - nothing. Re-flashed KitKatDS & restored by current set-up - nothing.
I'm completely stumped and seriously starting to worry it's some freak hardware thing. Anyone here ever experience something like this?
Thanks for any of your thoughts!

Never seen this myself before, check your apns would be my next step. Maybe try *#*#4636#*#* from the dialer and see if what it says there too. But mostly I'm stumped
Sent from my Nexus 4 using XDA Premium 4 mobile app

[TMOBILE SIGNAL] signal rarely come back after lost connection

I wonder if anyone have use verizon htc one m8. On Tmobile. My phone keep disconnect very ez and signal wont automatic come back. Sometimes i see theres 1 bar of signal, but i cant make a call or send sms. I have to manually turn on and off Airplane mode to send sms or call.
I have try 3, 4 customs ROMS so far: GPE, VIPER( i choose Tmobile in setup carrier), STOCK ROM( cant send sms of mms or call while full signal) i wonder if anyone have same experience.

Wait, you're using a Verizon unit on TMobile? I'm surprised you can send an sms or make a call at all, given that vzw is CDMA and tmobile is GSM... I don't know how you'd even get that to work
Sent from my VZW HTC One M8

sparky_005 said:
Wait, you're using a Verizon unit on TMobile? I'm surprised you can send an sms or make a call at all, given that vzw is CDMA and tmobile is GSM... I don't know how you'd even get that to work
Sent from my VZW HTC One M8
Click to expand...
Click to collapse
HTC one m8 from verizon is unlocked version, it support most of carrier, that is wat i know.

I wonder if any dev can look into this problem .

Actually, I've been having the same problem on VZW.

I was just about to post about this, I've been having big issues on vzw. I've lost voice connectivity completely, only 4g works and even then it comes and goes. I've tried flashing firmware and radios, new roms, but nothing. I'm about to try a full ruu and see if that does anything, I suspect it's a Sim issue though.

Verizon M8 on Tmobile call end issue
I am having similar issues where every once in a while the call ends right after dialing. The phone is Verizon M8 rooted with Insertcoin ROM being used on tmobile. LTE and SMS works. I'm wondering if flashing just the new firmware 1.55.605.2 would help. I remember having similar issue on Tmobile S3, it was fixed after they release a new firmware.

I just want to make this topic jump to page 1.please help us if anyone know how to fix this.

rsach said:
I am having similar issues where every once in a while the call ends right after dialing. The phone is Verizon M8 rooted with Insertcoin ROM being used on tmobile. LTE and SMS works. I'm wondering if flashing just the new firmware 1.55.605.2 would help. I remember having similar issue on Tmobile S3, it was fixed after they release a new firmware.
Click to expand...
Click to collapse
I tried flashing ATT & Tmobile radio.img files, but the signal was totally gone. The phone is still flaky when LTE is on, currently switched it to CDMA/GSM to see if the call end issue resolves.

rsach said:
I tried flashing ATT & Tmobile radio.img files, but the signal was totally gone. The phone is still flaky when LTE is on, currently switched it to CDMA/GSM to see if the call end issue resolves.
Click to expand...
Click to collapse
I tried many signal mode with thunderbolt lte ( search on google play) but no help. Im out of option now. I think the only way is that htc release a bug fix or new firmware.

same problem guy...no more 2/3G.
Where we can find full ruu ? I think only that can help

avetny said:
same problem guy...no more 2/3G.
Where we can find full ruu ? I think only that can help
Click to expand...
Click to collapse
I hope they come up with a fix soon, I am thinking about getting a tmobile brand M8, the data speed gets really slow every now and then.

Y'all should jump on the ViperOne ROM 2.2.0. It is doing good for me. Still has some signal issue, but it is like 95% better now.

I have ARHD 8.1 and it's doing really good. I have to toggle airplane mode on and off. But then I stumbled on this, but haven't made any sense on it
http://grokbase.com/p/gg/tasker/127st9fkt9/will-this-profile-work-airplane-mode-when-no-service

Try a different radio. The .0222 radios were giving me problems and I switched back to the .0321 radios. Your mileage may vary