[Q] CM7 (build 93) - 3G radio issues??? - T-Mobile LG G2x

Ok. So I ran into a serious issue and it most likely has something to do with the 3G radio.
Here's what happened. Phone was down to about 15% batteries after some Youtube and Angry birds. I was at my folks place and the cell signal there is not as strong, but still a bar showing. I noticed the phone was quite warm, but thought nothing of it since I was using Youtube/Angry birds. Check a few emails and noticed the batters quickly dropping to 12% within a few minutes and noticed Battery Status Monitor was reporting 990mA draw. I was alarmed, but didn't think too much about it and went to have dinner with the folks.
about 30/40 min later after dinner. The battery was dead. Didn't have my charger with me, so I didn't plug in for another couple of hours until I got home. Plugged in, booted up, everything was fine, except it would not connect to cell service stating "No Service". I then tried a bunch of things, rebooting, swapping out the battery, swapping out the SIM, but no avail. Swapping the same SIM to my old HTC works fine and connects on AWS 3G network.
This morning I tried another SIM that not on AWS, and it connects (assuming on 2G/EDGE network). Swap back in my original SIM and back to "No Service" (my provider only has 3G AWS service).
So at this point, I'm pretty convinced I have a hardware problem so I restore the stock Froyo ROM to return my phone...then magically, I'm back alive on the 3G AWS network!
Someone tell me what's going on!
I haven't tried to reflash CM7 again. Quite frankly I'm quite scared this may not be hardware problem and maybe a software issue instead, and may be stressing the 3G radio.
Help!

First, not to be rude, but this isn't development.
Secondly, what carrier are you using that only has 3G service and nothing else?
To me it sounds like your SIM card could just be shot, especially if you were able to insert another and it worked just fine.
Then again, that's hard to determine if your carrier actually only offers 3G service.

wrong section and a hard reboot always works ! volume up and power down hold for 10 seconds until u see lg

davehasninjas said:
First, not to be rude, but this isn't development.
Secondly, what carrier are you using that only has 3G service and nothing else?
To me it sounds like your SIM card could just be shot, especially if you were able to insert another and it worked just fine.
Then again, that's hard to determine if your carrier actually only offers 3G service.
Click to expand...
Click to collapse
How do I move this thread?
My original SIM is fine. It works fine on my HTC in 3G. The other SIM is with another carrier that's NOT on AWS spectrum and my G2X connected in 2G only. I'm in Canada, our new carriers Wind, Mobilicity, Public, etc are on 3G+ AWS only with no 2G fallback. I can restore my CM7 and try a hard reset if it doesn't come up. But I'm just concern, there's a software issue that cause this failure.

smoothmoose said:
How do I move this thread?
My original SIM is fine. It works fine on my HTC in 3G. The other SIM is with another carrier that's NOT on AWS spectrum and my G2X connected in 2G only. I'm in Canada, our new carriers Wind, Mobilicity, Public, etc are on 3G+ AWS only with no 2G fallback. I can restore my CM7 and try a hard reset if it doesn't come up. But I'm just concern, there's a software issue that cause this failure.
Click to expand...
Click to collapse
I had just flashed the newest CM7 Nightly and noticed when I woke up in the morning, my SIM wasn't being read. I wiped, re-flahsed, no workie. I tried a hard reboot, nothing. I even flashed to build 90 and still didn't read my SIM.
I'm loading xhoarder's tweaked GB right now...and it STILL isn't reading my SIM!!! What the hell happened?

mmorabe said:
I had just flashed the newest CM7 Nightly and noticed when I woke up in the morning, my SIM wasn't being read. I wiped, re-flahsed, no workie. I tried a hard reboot, nothing. I even flashed to build 90 and still didn't read my SIM.
I'm loading xhoarder's tweaked GB right now...and it STILL isn't reading my SIM!!! What the hell happened?
Click to expand...
Click to collapse
Mine stopped working after a couple of days. I'm back on stock Froyo and it's working again. Did it work at all for you with the latest CM7 nightly?

smoothmoose said:
Mine stopped working after a couple of days. I'm back on stock Froyo and it's working again. Did it work at all for you with the latest CM7 nightly?
Click to expand...
Click to collapse
It worked while I set everything up and loaded my apps. Went to bed, and when I woke up, the SIM wasn't detected. I'm on xhoarder's tweaked GB ROM and my SIM still isn't working.
Going to try a hard reboot.

Whythis is here?. There is a Q&A forum exclusively for questions.
Thread closed.

Related

No signal - Reflashed 3 times

Today my phone has been switching from no signal to signal
and now it refuses to get any signal
i have tried changing the radio
reflashed stock rom
then reflashed a modded rom
and each one has the same result ...
any other ideas what could be wrong?
i get signal if i put the sim in another phone
so its definately phone related
make sure the radio matches the rilphone.dll?
yep
same .dll from the radio package
have a feeling its some internal problem
cuz the sim is fine otherwise
grr
What about Edge?
I had a LOT of frustrations with mine a couple of weeks ago, then, just to play a hunch, I disabled 3G, and went back to edge and it worked perfectly. Sent an email to the deathstar, and they sent back saying they were having 3G problems. Reading over on boygeniusreport.com, a LOT of people are having trouble with 3G. At&t doesn't have the bandwith to support all the apple iPhone fanboys I guess.
Probably not what's causing your issue, but might be worth a try...save you from pulling your hair out.
Vish112 said:
Today my phone has been switching from no signal to signal
and now it refuses to get any signal
i have tried changing the radio
reflashed stock rom
then reflashed a modded rom
and each one has the same result ...
any other ideas what could be wrong?
i get signal if i put the sim in another phone
so its definately phone related
Click to expand...
Click to collapse
First Take your Phone out of the Faraday Cage.
p51d007 said:
I had a LOT of frustrations with mine a couple of weeks ago, then, just to play a hunch, I disabled 3G, and went back to edge and it worked perfectly. Sent an email to the deathstar, and they sent back saying they were having 3G problems. Reading over on boygeniusreport.com, a LOT of people are having trouble with 3G. At&t doesn't have the bandwith to support all the apple iPhone fanboys I guess.
Probably not what's causing your issue, but might be worth a try...save you from pulling your hair out.
Click to expand...
Click to collapse
If this doesn't help, disabling 3G, you may have to do a warranty exchange.
left battery out all night (last night)
then i reconneced it this morning
and everything seems to working fine
must have been some internal static
thanks dudes

4g down or buggered phone?

Im in the DC area and my phone wont connect to 4g for life of me (im in a strong 4g area). tried toggling. tried forcing LTE only(either 1x shows up or nothing at all). tried turning off data for 10 minutes. tried removing battery. tried full wipe (wiped three times cache, tried clearing davlik cache and battery stats...three times) reinstalling 1.7. I can still connect to 3g and 1x. Just no 4g
i was initially on bamf's 2.0b5 and noticed i couldnt get 4g. so i restored back to 1.7 and still no 4g. and no i didnt forget to flash the appropriate radios. i called verizon to see if there were issues with the network in the area and they came up with nothing. is my radio broken or am i missing something here?
Try starting the phone up once without the sim card in and then reinstall the sim card and see if it works.
Sent from my ADR6400L using XDA App
just tried that. no dice. any other suggestions?
Maybe take it in to vzw and have them test the sim. It could be fried.
Sent from my ADR6400L using XDA App
whoa. i didnt know that could happen.
same thing with mine I am in Manasasso area and i get 4g off and on but cant get on the market or google, then i back to 1x so is it a phone issue or a system issue.
Well with me its not even on and off. I get nothing at all.
Sent from my ADR6400L using XDA App
I'm sure this is a stupid question but it must be asked. Do you have the back of the phone off?
no such thing as a dumb question. just dumb people. hahaha im kidding. just trying to make light of the situation a little at least. i had a teacher that would always joke around like that so i had to say it.
but i digress, no the battery cover is not off. like i said, 3g and 1x works. just no 4g. can it be possible that just the 4g radio could be broken or if that were the case, i wouldnt have any data network at all?......
and as i was typing this message, my 4g connection had just connected. i think it has to do with the area where i live because I am now in my work building and it seems to be working fine now...i guess verizon lied to me... thanks for the suggestions. will post if things change.
Well, according to Verizon and their coverage map I'm supposed to get 4G at my house but I don't. Granted, I am on the edge. Now, here at work is a different story...solid 4G and it never looks for 3G.
Yeah, I am supposed to have 4g at where I live too. And I would get a strong signal too, which was why I was totally stumped when i couldnt get a 4g connection all of a sudden and verizon told me there were no problems with the network in the area.
this is happening to me as well. Phone keeps jumping between 1X and 3G all the time. I rarely get 4G anymore
I'm on Perfect Storm1.5 running the MR2.5 Radio chingy leaked
I have tried 4 different radios as well as ROMs over this past week, no change on either
been 4 hours and phone hasnt dropped 4g since. even flashed back to bamf 2.0b6. I would get no signal on reboot, but toggling works like usual again. i guess where I live is having problems right now. will post when i get back.
working now. im guessing its the network. running 2.0b6 with mr2.5
This was happening to me as well. I would sometime get "4G", but it's fake 4G, as I would not be able to receive any downstream data, and connectivity would soon cut out. I've gone from GingerRemix 2.1 back -> 1.7 -> 1.63 -> stock -> stock unrooted, and could not get 4G back.
I decided to throw in the towel and go to Verizon (with GingerRemix 2.1 loaded), to compare. They definitely had 4G in store while I was carrying 3G around. I told the "device specialist", and without much questions, he popped in a new sim card for me. I had 4G then until I was about 4 steps out the door, and it would fall back to 3G. The dude and I spent the next hour swapping out another card, placing my sim card into a returned TBolt, but no luck. Finally, he did a factory reset on my phone. With no further luck, he resorted to ordering me a new one.
Still unsure what the issue is since he did give me a new SIM, and that SIM didn't work on another TBolt as well. We'll see whether the new one that comes in the mail tomorrow will fix the issue. I've since then reverted back to stock, since I need to mail my "broken" phone back to VZ, still no 4G.

[Q] mobile data not working, poor or no phone signal

Hey guys, I haven't done anything to my phone but all of the sudden, the data and phone signal basically quit working. I have a very hard time getting texts, phone calls etc to go though but it will eventually (usually takes a while or a few tries) and as far as data goes, I basically have no connectivity at all unless I'm on wifi. It says 3g or H every once in a while, but it's really slow and usually doesn't stay for long. I'm running CM9, and like I said before I didn't change anything that I'm aware of that would have caused this problem. It worked fine before, and it just stopped. Ideas? Thanks
iamtheculprit said:
Hey guys, I haven't done anything to my phone but all of the sudden, the data and phone signal basically quit working. I have a very hard time getting texts, phone calls etc to go though but it will eventually (usually takes a while or a few tries) and as far as data goes, I basically have no connectivity at all unless I'm on wifi. It says 3g or H every once in a while, but it's really slow and usually doesn't stay for long. I'm running CM9, and like I said before I didn't change anything that I'm aware of that would have caused this problem. It worked fine before, and it just stopped. Ideas? Thanks
Click to expand...
Click to collapse
have you called your provider? maybe its on their end.
I'm having the same exact problem... it shows my 3g it shows all my bars but instead of the bars being colored or the 3g be in color is gray. Also I cannot get back conectivity until I restart the phone. Does anybody have an idea what this is?
Are you on AT&T? I was not having any problems until a certain point in time, and I didn't change or do anything to incite them. I'm not even getting calls anymore, I'll just get all my texts in a wave every few hours. My data is useless, it won't stream, or load web pages, and my phone is frequently saying "Emergency calls only" when I'm sitting at my freaking house (which normally has full 3g and cell signal and is very fast)
This just started occuring with my 9020a on AT&T the first week of March. I switched SIM cards twice, spent about an hour on the phone with ATT, and sent the device back to Samsung who rolled back the software to 2.3.4 and the Radio to UKE1.
I still have the issue. Samsung says its not them. ATT does nothing. It;s liek the phone just stopped working, started dropped calls, missing calls, and the internet connection sucks. I have an iphone for work through ATT as well and have no issues with signal.
ANy help is appreciated.
Hmm
Make sure you have the right, most up to date settings for APN, and flash original radios. if it still doesn't work, make sure you have the i9020A, which has the at&t 3g antenna, not i9020T which has the T-Mobile antenna, vice versa.
Have you tried other radios for your device (make sure you flash the appropriate ones for your model)? Any signal info under Phone Information when dialing *#*#4636#*#*?
ChemicalD said:
This just started occuring with my 9020a on AT&T the first week of March. I switched SIM cards twice, spent about an hour on the phone with ATT, and sent the device back to Samsung who rolled back the software to 2.3.4 and the Radio to UKE1.
I still have the issue. Samsung says its not them. ATT does nothing. It;s liek the phone just stopped working, started dropped calls, missing calls, and the internet connection sucks. I have an iphone for work through ATT as well and have no issues with signal.
ANy help is appreciated.
Click to expand...
Click to collapse
Sounds like you're having the exact same problem I am having. I switched sim cards, flashed different roms, etc and nothing. (although to be fair, after the new sim, things work better, but still not well) I'm about ready to pop my sim back in my craptivate and just go with that... or buy an iphone off of craigslist.
Billchen0014 said:
Make sure you have the right, most up to date settings for APN, and flash original radios. if it still doesn't work, make sure you have the i9020A, which has the at&t 3g antenna, not i9020T which has the T-Mobile antenna, vice versa.
Click to expand...
Click to collapse
I am 100% sure I have the 9020a, but I don't know anything about APN and flashing radios. I have only ever flashed full roms before, so I wouldn't know where to look for the original radio.
Oogway13 said:
Have you tried other radios for your device (make sure you flash the appropriate ones for your model)? Any signal info under Phone Information when dialing *#*#4636#*#*?
Click to expand...
Click to collapse
I have not tried other radios. The signal info seems solid, sitting at my house, but the 3g is still horridly slow. It taked 15-30 seconds to load a webpage, even a pretty mundane one like google. Messages still come through in waves, and often won't send
About your APN, AT&T should provide you with the proper values to put in under Settings | Wireless & Network | More | Mobile Networks | Access Points Names.
If you are on ICS, they values should populate by themselves.
Can you try flashing other radios and see if you encounter the same problem:
http://forum.xda-developers.com/showthread.php?t=1116884
Make sure you backup your EFS folder (and all data for that matter).
I had similar problems, they were related to turning 3g on/off with a APN widget while the phone had little signal. As soon as started enabling and disabling 3g on the android options everything was back normal.
alexfiorani said:
I had similar problems, they were related to turning 3g on/off with a APN widget while the phone had little signal. As soon as started enabling and disabling 3g on the android options everything was back normal.
Click to expand...
Click to collapse
the data works most of the time now it's just retardedly slow. I can't stream music even on low quality, nor can I watch youtube without leaving it for 5 minutes to buffer,pages take forever to load, and I was downloading a 6 meg app and it took 20 minutes to download whenI was leaving the phone alone and not moving. I got really sick of trying to fix it and finally gave it to geeksquad to send in to get replaced. sigh.

Signal Dropping Constantly

Hello,
I'm at a point where I don't know what else to do. My signal is dropping and or changing from H to H+ to 3G to no connection constantly. I'm supposed to be on LTE. Everything had been working fine until this morning.
Here is what I've done to try and fix the problem:
- re-flashed ROM (Liquid Smooth, Paranoid Android, etc) Same results. And when I say I re-flashed I mean I started from scratch, cleared everything, etc.
- flashed different modems (3)
- went back to stock
- went to AT&T and tried a new SIM card
- pulled battery, pulled SIM, etc
Everything leads back to the same performance which is that my signal is not stable. I'm in NYC so I know my signal should be stable. It has been every day until today. And of course I did speak with ATT when I was there today and they said that there are no issues. I know they're right because every phone in there was getting LTE.
So now I'm thinking it's a physical problem with the phone?
Any advice is welcome. Thanks in advance.
-Tony
tonyfiore75 said:
Hello,
I'm at a point where I don't know what else to do. My signal is dropping and or changing from H to H+ to 3G to no connection constantly. I'm supposed to be on LTE. Everything had been working fine until this morning.
Here is what I've done to try and fix the problem:
- re-flashed ROM (Liquid Smooth, Paranoid Android, etc) Same results. And when I say I re-flashed I mean I started from scratch, cleared everything, etc.
- flashed different modems (3)
- went back to stock
- went to AT&T and tried a new SIM card
- pulled battery, pulled SIM, etc
Everything leads back to the same performance which is that my signal is not stable. I'm in NYC so I know my signal should be stable. It has been every day until today. And of course I did speak with ATT when I was there today and they said that there are no issues. I know they're right because every phone in there was getting LTE.
So now I'm thinking it's a physical problem with the phone?
Any advice is welcome. Thanks in advance.
-Tony
Click to expand...
Click to collapse
Hey tony i know the isues you having but one thing you have to understand is that Network carriers Label the 4G logos"4g" although you maybe in a Hspa/Hspa+ location(which is more of a 3g+) lol
as for the data connection drop this has been an issue with JB for awhile where the apns wont stick either on boot or time out etc.....
best bet to know if its your phone or not is to revert to stock and test it if stock keeps the data connection then you know the phone is fine if it doesnt then its just apart of JB issues more then half of JB runners run into this issue.
He did go back to stock...
If the issue is still happening on stock, I'd say have AT&T replace the phone.
Sent from my Slim Bean Skyrocket
Quando Omni Flunkus Moritati
Thanks for the replies.
Yes, at this point I've done everything I could think of with regard to trying different scenarios. I'm definitely leaning towards the fact that perhaps the phone itself is on the fritz. Unfortunately the phone is out of warranty so I can't just have it replaced. I'm not due for an upgrade until June. And I don't have insurance on the phone. That sort of limits my options. AT&T did credit me $100 for my troubles, which is better than nothing. For an early upgrade I'd have to pay like $250, I believe (minus the $100 credit) in addition to renewing my contract with AT&T. Just thought I'd give you guys the breakdown.
Also, I want to reiterate the fact that I am in midtown Manhattan (NYC) where the signal is always full bars of LTE service. It's been consistent for months. This started yesterday (the signal drops) and has been inconsistent ever since. Obviously I've polled other AT&T users around me and they are not having any connection issues. And yes, I'v e gone back to stock more than once. The signal definitely comes and goes constantly. It's not just what the meter says on top of the screen. I use an application to see what mobile network I'm connected to and I'm getting the same inconsistencies looking there as I do when I look up at the signal meter in the status bar.
I had this happen too. Turned out my phone was broke.
I've got best buy's warranty and they replaced the phone. Sorry I'm not more help, but the fact that the phone just doesn't get a signal is a possibility. And I just wanted to let you know, you're not alone
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

[Q] Stuck on EDGE or GPRS

When I'm on data, my phone is stuck on EDGE or GPRS when it should go up to 3G or H+. I've tried restarting my phone, turning wifi on and off, turning data on and off and made sure my settings looked okay. Any help is appreciated!
Cataclysm 11/26, Franco r14, dalvik patch. And if it's relevant, I'm on Rogers wireless.
I'm not sure but doesn't Rogers use global frequency in which case you need the 821 model?
I've definitely had 3G and H+ on my N5 (abbreviations much?), but it just seems very inconsistent. It'll go from H+ to 3G, back to H+, then cut out completely, then sit on E or G for a while. Just trying to pinpoint the issue because it's getting annoying haha. Perhaps it's the frequency that's screwing it up but that's definitely not my area of expertise. I do have the D820 model if that's helpful.
I'm having exactly the same problem with Fido right now, I tried pretty much everything including
- flashing back the factory image
- tried every modems from the xda thread in the Nexus 5 Android Development section (currently my phone is on the D821 modem but it didn't change anything)
- changing my apn (but it was obvious that this was not the problem since the phone had a edge connection.
I'm really about to call Fido...
Still, I'm kinda glad to see that i'm not alone.
maybe that the data service in your personal area?
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
obsanity said:
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
Click to expand...
Click to collapse
I called Fido, the technical support told me that they had something that was blocking me from 3G (but he didn't tell me what it was, he just told me that something was blocking me...) I had my beloved H+ back for maybe a whole minute and then it just switched back to Edge network.
All I wanted to know was if many customers have reported the problem or if I were alone...
Maybe if I'm lucky my phone will get back its 3G soon just like you.
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
mark1s said:
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
Click to expand...
Click to collapse
Thanks for the update mark1s. Definitely let me know if a new phone fixes anything, although I'm also thinking it's a software problem.
The problem could just be that there happens to be patches of low coverage in the areas we're testing this out, which seems unlikely in big cities. But testing at work seems to have this problem, but testing this at home I pick up 3G and H+ just fine. Odd..

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