Just wanted to put this out there and see if anyone else is having this problem. I'm sitting here watching the phone go through a neverending cycle as follows:
1) 3 bars 3G
2) 3 bars HSPA
3) 3 bars HSPA+
4) 3 bars 3G
5) Signal drops to nothing, empty box, remains like this for more than 30 seconds
6) Signal icon disappears and reappears and begins to reconnect
Rinse and repeat
I don't think that the signal where I am is that great, but I haven't heard anyone else complaining about their signal dropping like this. How can I tell whether this is AT&T or the phone?
Have you Tried...
zksailor534 said:
Just wanted to put this out there and see if anyone else is having this problem. I'm sitting here watching the phone go through a neverending cycle as follows:
1) 3 bars 3G
2) 3 bars HSPA
3) 3 bars HSPA+
4) 3 bars 3G
5) Signal drops to nothing, empty box, remains like this for more than 30 seconds
6) Signal icon disappears and reappears and begins to reconnect
Rinse and repeat
I don't think that the signal where I am is that great, but I haven't heard anyone else complaining about their signal dropping like this. How can I tell whether this is AT&T or the phone?
Click to expand...
Click to collapse
The first thing i would try is going into your Mobile network settings -->network operators and autoconnect. if that fails there is the infamous battery pull or go into your recovery and run the fix errors. If all of those should fail you try updating your ROM. If that also fails your back to square one. Sorry. I have had similar issues in the past and it ain't fun but finally went away.
zksailor534 said:
Just wanted to put this out there and see if anyone else is having this problem. I'm sitting here watching the phone go through a neverending cycle as follows:
1) 3 bars 3G
2) 3 bars HSPA
3) 3 bars HSPA+
4) 3 bars 3G
5) Signal drops to nothing, empty box, remains like this for more than 30 seconds
6) Signal icon disappears and reappears and begins to reconnect
Rinse and repeat
I don't think that the signal where I am is that great, but I haven't heard anyone else complaining about their signal dropping like this. How can I tell whether this is AT&T or the phone?
Click to expand...
Click to collapse
Exact same issue on Galaxy Nexus w/at&t & CM10.1.0 stable. Wiped, Rolled back to CM10.0 and it went away, then wiped and tried to install CM10.1.0 RC2 and the problem came back... That's a ROM I'd used for months without an issue. Tried Radios, RIL... Just Completely baffled.
Related
Got a strange issue here. My wife and I have had evos since release and 4g worked fine on both when we got them. We're in Boston and since Boston didn't have official 4g until last week, neither of us have used the 4g radio until we read that boston was flipped on last week. On both evos, we're finding that when we toggle 4g on, it takes the normal ~20 seconds to turn on and then it scans for a second or 2 before turning itself off. After turning off, it turns on again and repeats this on/off routine indefinitely. I am only able to stop the loop by pressing the "4g off" button while the radio is scanning for a few seconds. The radio then turns off and stays off. On my wife's phone, the scanning only happens for a split second so it's almost impossible to stop the loop. Her battery dies in ~4-5 hours because of this.
Both evos are stock 2.2 and both pretty different launcher/app setups. I've tried removing common apps between the phones with no luck. I'm at a loss for what might be causing this. I've searched and found this thread but there is no solution:
http://androidforums.com/evo-4g-support-troubleshooting/158160-4g-failed-connection.html
Next step is to call sprint but that is always a last resort. Any ideas?
that's pretty weird. From what i know this happens when you root and flash roms/kernels. Your mac address gets changed. I'm having the same issue atm, but my evo is rooted.
Either your mac address was changed for some reason, or your rsa keys are gone.
Last-Chance said:
that's pretty weird. From what i know this happens when you root and flash roms/kernels. Your mac address gets changed. I'm having the same issue atm, but my evo is rooted.
Either your mac address was changed for some reason, or your rsa keys are gone.
Click to expand...
Click to collapse
i read about people losing 4g due to rooting issues and keys getting lost. but from what i read, it seems these people are able to turn on their 4g radio without issue but it just scans forever even though they are located within range of a 4g tower. i'm seeing something different here. the 4g radio goes into an on/off loop and barely scans at all.
Not sure I'll be much of a help, but....
Make sure you are outside in a guaranteed coverage area. 4G signal doesn't have the penetration or range of 3G/EV or 1x Voice radios. Confirm that you have 4G signal in that area with someone else who has a 4G capable device.
Then, if that doesn't help, you can go for more extreme methods, such has completely reset one of them back to factory, redo your data profile and test again.
If that doesn't work, you'll probably be stuck with calling Sprint.
If it were me, I'd do the outside and confirm 4G first, then call sprint and see if they can refresh your profile or something before going to the extreme of hard resetting back to factory.
Just because the maps say you have 4G, doesn't mean you do right where you are. There's an app in the market that folks are using to find actual coverage, called Mapviewer by Sensorly. That may help you see where others have reported good signal.
GL!!!!!
thanks for the tips. when i was playing around with 4g back when i first got the evo, i found that i could turn the 4g radio on even when there was no 4g signal and it would just scan for a long time. is this still how it is supposed to work or did they implement some auto-off feature such that the radio turns itself off if it doesn't see a signals after a second or 2? because right now, the 2 evos in my house turn off immediately after turning on and then continue the on/off loop. so it doesn't seem like i can get the evos to behave properly even without 4g signal. i may try calling sprint to try the data reset.
I would give it some time to ramp up - I started in another thread how all of a sudden I'm getting 4G in NJ - and we're not supposed to have it yet at all. I can connect, but it just cycles through connected and diconnected (making it essentially unusable). I would imagine it will begin to normalize after a while.
edit - misread the op, sounds like you're having a different kind of issue. nm
Also, that is how the antenna works - it will keep scanning indefinately until either the battery is dead, or it connects.
hperry said:
i read about people losing 4g due to rooting issues and keys getting lost. but from what i read, it seems these people are able to turn on their 4g radio without issue but it just scans forever even though they are located within range of a 4g tower. i'm seeing something different here. the 4g radio goes into an on/off loop and barely scans at all.
Click to expand...
Click to collapse
nah he's having the same exact issue as me.
Here is the order of what happens:
1. Turning on...
2. Scanning...
3. Authenticating with sprint.. (sometimes you see this, sometimes you dont)
4. Turning off
5. Go back to 1, and repeat
^^ From what he said, that is pretty much exactly what it sounds like. And that's the same problem I'm having with rooted phone.
Last-Chance said:
nah he's having the same exact issue as me.
Here is the order of what happens:
1. Turning on...
2. Scanning...
3. Authenticating with sprint.. (sometimes you see this, sometimes you dont)
4. Turning off
5. Go back to 1, and repeat
^^ From what he said, that is pretty much exactly what it sounds like. And that's the same problem I'm having with rooted phone.
Click to expand...
Click to collapse
that's pretty much it except i've never gotten to the authenticating part since this issue started. also, my phone scans for a few seconds before the 4g turns off. my wife's phone turns off almost instantly after the radio finishes turning on. this is the biggest issue because there is no way to interrupt the loop on her phone. even a reboot with battery pull doesn't stop it.
performed a hard reset on my wife's evo and that fixed it on her phone. mine will be tricker because of customizations. what a PITA.
called sprint and the tech support basically said the 2.2 update has caused lots of problems and they are waiting for "htc and android" to release fixes. so, of course, not sprint's fault at all. she told me just to use 3g and not 4g. pathetic.
did the hard reset on my evo and now the 4g radio won't turn on at all. it just sits on "turning on 4g..." for a few minutes before coming back with "unable to start 4g". i've tried 3 different types of hard resets (buttons, clear storage, and ##786#) and all with the same result. sprint is telling me my phone may be hosed but they won't give me a replacement because a fix is supposed to be released eventually. ugh...
Did anyone find a solution to this problem?
I was in Las Vegas on Friday, and 4G worked fine, but since then my 4G is doing what the OP said. I haven't changed anything in the Rom or Kernel.
Thanks!
Okay, heres my situation. Before I updated, I was running 2.1 stock, never rooted or made any mods. Then, I updated to the TmoUSA Defy 2.2 update (the one that was briefly released), and now I can no longer connect to 3g/ have EXTREMELY bad 3g reception.
Also, I can no longer boot into recovery mode (power button + volume down). When I see the Android figure with the "!", nothing happens when I touch the bottom left of the touch screen? To originally flash the 2.2 update, I simply went in to recovery, and flashed the update.zip. Im doing nothing differently now, and can no longer get into it.
My main issue I am having though, is with 3g reception. Im in the exact same spot of my house, and used to have 4 bars of 3g, and would get about 1.5mbps down, and now, Im forced onto Edge, which obviously is over 10 times slower -_-
Any help would be greatly appreciated!
___________________________________________________________________________________________________________________________
UPDATE:
Okay, this is AWFUL. I did a full reset through the recovery, and cleared the cache. But that did not help at all. On top of that, my issues are worse.
My phone cannot connect to 3g, I went to my school, and there are several cell towers on campus, and I always had full bars of 3G service. And guess what? I didnt get a single bar, just 2g service.
New problems occurred, now the phone gets hot, with no programs running. I tried restarting, but that didn't work. Second, my phone died in about 2-3 hours with little to no use, 1 txt thats all. And it DOESNT CHARGE AT ALL. At first, it took a few hours to charge from 20% to full, and now, I tried charging after school, and its stuck at 0%?
Is there any way to downgrade to 2.1, including the baseband? Should I contact Motorola? I've never rooted it, just installed the official 2.2 update for the US, the one that was briefly released (deeply regretting it now :'( )
Try pressing both volume up and down at the same time when you see the android guy. They changed it from touching lower screen in the upgrade to froyo
Then once in recovery do a restore reset and see if that helps.
Sent from my MB525 using XDA App
Okay, this is AWFUL. I did a full reset through the recovery, and cleared the cache. But that did not help at all. On top of that, my issues are worse.
My phone cannot connect to 3g, I went to my school, and there are several cell towers on campus, and I always had full bars of 3G service. And guess what? I didnt get a single bar, just 2g service.
New problems occurred, now the phone gets hot, with no programs running. I tried restarting, but that didn't work. Second, my phone died in about 2-3 hours with little to no use, 1 txt thats all. And it DOESNT CHARGE AT ALL. At first, it took a few hours to charge from 20% to full, and now, I tried charging after school, and its stuck at 0%?
Is there any way to downgrade to 2.1, including the baseband? Should I contact Motorola? I've never rooted it, just installed the official 2.2 update for the US, the one that was briefly released (deeply regretting it now :'( )
I presume you are indeed on T-Mo US? I'd start by calling their tech support, just get elevated to upper tier. Then give Moto a shot. Have you done an Operator selection search? If you go into the INFO menu -- dialer > *#*#4636#*#* > Phone information, scroll down to Preferred network type, it should say GSM auto (prl) to get 3G reception. If not, try changing it.
Bump? Any help would be great, I just sent an email to Motorola, but probably wont get a reply for a day or two. I can't even use my phone, it dies within 2 hours, doesn't charge, and wont even connect to 3g.....
scrannel said:
I presume you are indeed on T-Mo US? I'd start by calling their tech support, just get elevated to upper tier. Then give Moto a shot. Have you done an Operator selection search? If you go into the INFO menu -- dialer > *#*#4636#*#* > Phone information, scroll down to Preferred network type, it should say GSM auto (prl) to get 3G reception. If not, try changing it.
Click to expand...
Click to collapse
Thanks! I'll try that as soon as I can turn on my phone :'( Seriously though, thanks a lot. I am going to try that as soon as possible, but as of now, its been "charging" for 4 hours now, and it still just shows the picture of the battery @ 0%, and wont boot. I honestly have no idea, I tried a few different micro USB chargers, with no luck. When I used my Galaxy S charger, it showed a "?" instead of a %", as if it was not even recognizing the battery.
I assume you have tried the charger that came with the phone and have also tried it connected to USB on a computer?
Have you tried reformatting the SD card (or tried another) -- that may affect boot. And/or have you tried booting w/o SIM? I know you updated, but it could be a coincidental battery failure.
scrannel said:
I assume you have tried the charger that came with the phone and have also tried it connected to USB on a computer?
Have you tried reformatting the SD card (or tried another) -- that may affect boot. And/or have you tried booting w/o SIM? I know you updated, but it could be a coincidental battery failure.
Click to expand...
Click to collapse
Yes, that could be. But then again, it hasn't connected once to 3g after the update? I'm going to guess I have a battery failure, I kinda had a feeling that it might be that. It was so sudden though, I got great battery life, that lasted at least a full day to 2 days. And then after the update, it would hardly last 2 hours. The phone was also constantly warmer than usual, but I didn't have anything running. Im just going to hope that it was coincidental, and that right after I updated it, my battery died, and I didn't have it on GSM Auto (prl).
Welcome to my world...... I finally got to the point where I could only get Edge... Phone got replaced under warranty.
Hi,
I have a problem with my DHD. It looses signal but my signal bar is ok,and showing 3-4 bars. I cant make a call or receive it. i noticed that my data connenction is broken too..,it displays "H" or "3G" but its not Working. Only wifi works for few minutes ,someteimes even more and then everything is ok. it happens 5-6 times at day.
sorry for bad english
thx
perisican1 said:
Hi,
I have a problem with my DHD. It looses signal but my signal bar is ok,and showing 3-4 bars. I cant make a call or receive it. i noticed that my data connenction is broken too..,it displays "H" or "3G" but its not Working. Only wifi works for few minutes ,someteimes even more and then everything is ok. it happens 5-6 times at day.
sorry for bad english
thx
Click to expand...
Click to collapse
Check that the back cover (where the sdcard is) is not broken as that is where the antenna is located. If not try cleaning the antenna (the two metal pins in the cover) and see what happens.
Hi,
I've been reading the other shutdown issue with interest from the start but I think that my particular issue is different and I'd like to know whether anyone else has my exact problem.
I'm using the o2 UK 16GB version 10A/234 and this is the problem:
When I reboot the phone and it gets to the lockscreen, if the network status is "disabled" on the lockscreen and I swipe to open, the phone shutsdown and can't be started again until I remove the battery.
If I wait for a couple of seconds when the lockscreen comes up, there is a little lag but the phone works as normal.
I can replicate this issue over and over again, so it is not a random occurrence AND this is the second handset that I have had where this exact problem is present.
Does anyone else have this issue?
constantG said:
Hi,
I've been reading the other shutdown issue with interest from the start but I think that my particular issue is different and I'd like to know whether anyone else has my exact problem.
I'm using the o2 UK 16GB version 10A/234 and this is the problem:
When I reboot the phone and it gets to the lockscreen, if the network status is "disabled" on the lockscreen and I swipe to open, the phone shutsdown and can't be started again until I remove the battery.
If I wait for a couple of seconds when the lockscreen comes up, there is a little lag but the phone works as normal.
I can replicate this issue over and over again, so it is not a random occurrence AND this is the second handset that I have had where this exact problem is present.
Does anyone else have this issue?
Click to expand...
Click to collapse
I'm facing the same issue. Is your device rooted?
At first every (re)boot without being connected via usb to a charger or a computer would result in a shutdown shortly after I enter my pin. After a day of usage I cannot reproduce it anymore, although it still happens from time to time, for example yesterday when I tried to send a text while having very bad to no reception. When it happens I also have to remove the battery or hook it up to a charger, otherwise the buttons/screen would not respond..
I'm thinking there is a (firmware) problem with the chipset since it always happens when my phone is trying/strugling to connect to the mobile network. I installed an app which constantly writes logs to my sd, hopefully that will give me more information about what's causing the problem..
Are you also having bad reception when the device shuts down? My previous device (iPhone 5s) had normal reception in my house, incl. a stable 3G connection, always 2-3 bars of 5. The LG G3 is constantly strugling with the connection to the network and often switches to "emergency calls only"..
NtotheO said:
...
I'm thinking there is a (firmware) problem with the chipset since it always happens when my phone is trying/strugling to connect to the mobile network. I installed an app which constantly writes logs to my sd, hopefully that will give me more information about what's causing the problem..
Are you also having bad reception when the device shuts down? My previous device (iPhone 5s) had normal reception in my house, incl. a stable 3G connection, always 2-3 bars of 5. The LG G3 is constantly strugling with the connection to the network and often switches to "emergency calls only"..
Click to expand...
Click to collapse
Interesting...I had a shutdown last night when I was home,at home I have very poor reception and almost always "emergency calls only"
NtotheO said:
I'm facing the same issue. Is your device rooted?
At first every (re)boot without being connected via usb to a charger or a computer would result in a shutdown shortly after I enter my pin. After a day of usage I cannot reproduce it anymore, although it still happens from time to time, for example yesterday when I tried to send a text while having very bad to no reception. When it happens I also have to remove the battery or hook it up to a charger, otherwise the buttons/screen would not respond..
I'm thinking there is a (firmware) problem with the chipset since it always happens when my phone is trying/strugling to connect to the mobile network. I installed an app which constantly writes logs to my sd, hopefully that will give me more information about what's causing the problem..
Are you also having bad reception when the device shuts down? My previous device (iPhone 5s) had normal reception in my house, incl. a stable 3G connection, always 2-3 bars of 5. The LG G3 is constantly strugling with the connection to the network and often switches to "emergency calls only"..
Click to expand...
Click to collapse
This happens rooted non-rooted, stock (no added apps) and always whilst connecting to phone network. Are you on same variant as me and if you leave it for a moment before putting in your pin does it then work ok?. I'm trying to get o2 to change my handset for another model (m8) but they just want to fix my one.
Sent from my LG-D855 using XDA Free mobile app
constantG said:
This happens rooted non-rooted, stock (no added apps) and always whilst connecting to phone network. Are you on same variant as me and if you leave it for a moment before putting in your pin does it then work ok?. I'm trying to get o2 to change my handset for another model (m8) but they just want to fix my one.
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
Yes I'm on the same variant. Still running the 10A firmware.
Sometimes it works, but I will do some more test this evening after work and see if I can reproduce it every time and hopefully get some usable logging too.
I think this is fixed in the 10f firmware update that I installed yesterday. I haven't had a shutdown since :victory:
constantG said:
I think this is fixed in the 10f firmware update that I installed yesterday. I haven't had a shutdown since :victory:
Click to expand...
Click to collapse
i was facing almost same issue except my phone crashed and don't want to boot up, haven't edited anything just started bluetooth. sometimes it start sometimes it doesn't
now it doesn't want to boot at all even charge screen gets stuck
Hi there
I've faced a problem since. I lose my antenna signal (on both 3g & 2g or auto connect) frequently, then when antenna signal bars return, suddenly screen flashes to black and back then I lose antenna bars again. and this happens for a while till it gets restart almost every time this happens.
I see multiple wired things also; while screen flashes,
sometimes some apps would stop working like instagram, battery docter, goole & google gesture and ...
sometimes i see a notification stating my sd card is damaged and needs format! (some times sd card is empty!)
and like that...
while restarting when samsung logo or even note 8 logo comes up, I see these flashing screen continus
I guess these happens while I am at areas with not very satisfying signals, although I had this problem while I had no sim card in it too!
what is wrong guys?
Note 8 5100
android 4.4.2 official ROM
(I thought of it as a software problem and upgraded to kit kat but no chance!)
I am also experiencing similar issues.
Sudden signal drop, screen flickering, rebooting without prompts. After that the apps installed in the sd card wont load for most of the time.
Plus device overheating and battery draining (did the battery pull trick and have been doing ever since, sometimes 2x a week!).
really hope somebody could chime in for a solution.
PS, thinking of flashing new ROM, but havent decided which one yet. Will this help at all?
engineers.mech said:
Hi there
I've faced a problem since. I lose my antenna signal (on both 3g & 2g or auto connect) frequently, then when antenna signal bars return, suddenly screen flashes to black and back then I lose antenna bars again. and this happens for a while till it gets restart almost every time this happens.
I see multiple wired things also; while screen flashes,
sometimes some apps would stop working like instagram, battery docter, goole & google gesture and ...
sometimes i see a notification stating my sd card is damaged and needs format! (some times sd card is empty!)
and like that...
while restarting when samsung logo or even note 8 logo comes up, I see these flashing screen continus
I guess these happens while I am at areas with not very satisfying signals, although I had this problem while I had no sim card in it too!
what is wrong guys?
Note 8 5100
android 4.4.2 official ROM
(I thought of it as a software problem and upgraded to kit kat but no chance!)
Click to expand...
Click to collapse
Donno... I know if the battery is weak or bad, the screen will flash randomly when power is needed. Example 1600mhz is used durring boot and home screen loading. As for non wifi connection for data, that will consume power like the CPU running at max.
It may be time to replace your battery. Especially if you have pulled the plug a few times. The wires and plug are brittle. Found out when messing with the used Note 8.0 I got on ebay that had 4.4.2 loaded.