Database Develop

[Q] 3G and network signal problem

Hi,
I recently updated to Froyo using the registry hack, i was on uk orange jf3 before.
Since being on it i have constantly been struggling with the 3g and the network signal, at first i thought the 3g was disconnecting when i turned the wifi on but then the network signal starting disappearing and it would show the circle symbol with the diagonal strike through it to show that it was not picking up any networks.
I read somewhere that cycling flight mode might solve the issue, but for some reason once i turn on/off flight mode it just hangs at that stage and will not change until after a restart.
I have also tried formatting both the internal and ext sd cards and i have done a factory reset twice.
Nothing has helped, it connects to 3g initially (which shows that it shouldn't be a setting problem?) and the network signal is also fine initially but then after a short amount of time or inactivity or switching on wifi the 3g won't connect and the network signal just dies.
If anyone has any ideas as to what is causing this or how to fix it i would really appreciate it.
Having a phone that can't make or receive calls when i need it to is really f'ing me off.
P.s. I have read and searched other topics for help on this but nothing so far has helped.

Might be something like I have? But I got no reply here...
see my post 8601578 (cant publish link here)

lorinthe said:
Might be something like I have? But I got no reply here...
see my post 8601578 (cant publish link here)
Click to expand...
Click to collapse
Yer i read your post, what i don't understand is that it was totally fine in 2.1 and now in 2.2 it's messed up, not sure if that is the same for you?
I think it is something to do with it being for Norwegian users not UK and that somehow affects it.
I have checked the apn and it all seems correct, do you also have the issue with flight mode not working properly?

Just found this on an internet search...
: Samsung Galaxy S v2.2/Froyo update
Posted: 5 days ago in response to: stefan
Some news on the update to Android 2.2 for the Samsung Galaxy S. Currently we are making some changes to get it working better when using Orange signal, and are therefore looking to release the update by the end of November – obviously this is a delay on our original release date but we hope it will be worth the wait!
Kind Regards
Stef
Forum Team
Click to expand...
Click to collapse
Not sure exactly what that means but it sure sounds like this might be the problem i am having.
I would be interested to know if other UK orange users have been having problems?
I would also like to know if it is possible for me to go back to to a previous version so i can actually use my phone.

I am orange uk, and have similar problem at home, but works well at office. Maybe it is due to the barrier of signal. if the signal level is lower than this barrier, only emergency call can be.
I do not know how to do but my friend advised me to update the moderm

[Q] Mobile data connectivity issues, which radio?

Hi guys (and girls),
I'm going slightly mad trying to figure out a stable setup for my O2X. I have been switching between the latest CM7 nightlies, and MoDaCo FR19. In general, CM7 gives me quite frequent black screens, and FR19 seems quite stable. However, there is one issue that is present in both ROMs.
I am unable to get a stable mobile data connection when I switch from WiFi. Sometimes it works, and sometimes it doesn't. To get it to work again, it sometimes works to switch to 2G only (and possibly back again). I have tried several different radios recently: 218, 606, and 622, all with the appropriate RIL. The mobile data connection for 218 drops in and out at random without any clear pattern. For the other two radios switching on or off 2G only seems to achieve stable connection. However, it does not actually seem to affect whether I get a 3G or 2G signal. The display can say H or G, even when 2G only is checked. Bluetooth did not work correctly with 606.
To top everything off, the GPS does not seem to behave consistently for a all the different radio versions.
I guess that people have different experience with different radios, so which radio are the guys in Norway using? Do I really have to slog through every released radio and spend the day checking each one of them? Can I expect to find a radio/from combination that blacks to give me a stable GPS and mobile data connectivity, as well as good WiFi?
I know this has been discussed numerous times before, but people never seem to reach any conclusions. I'm just looking for advice on how to proceed to fix my problem.

I'm on cm7 .77 and i honestly havent had a blackscreen since i flashed it (yesterday morning) + battery is good now. For me this is the most stable nightly so ill stick with it for 2 weeks on my holiday )
Edit: bb .502 ril 218(i think) dont have any problems with network switching btw
Sent from my Optimus 2X using XDA App

kolaf said:
Hi guys (and girls),
Do I really have to slog through every released radio and spend the day checking each one of them?
Click to expand...
Click to collapse
You probably have to, yes. This sounds more like a problem with the specific coverage in your area and how the phone interacts with the cell-towers than an actual problem with the phone. You may be in an area with weak signals from several stations, you may be in an area suffering from sudden bursts of noise, there could be a lot of reasons for why this is happening.
First thing I'd try is to upgrade to the latest official firmware (10C - 0622 for Norway), just to have a baseline for comparison. In theory this firwmare (and baseband) has recently been validated by the norwegian carriers, and should have the best chance of success.
Then you should probably do a manual scan (in phone settings) for networks, and pick one manually.
Also try using the INFO menu (*#*#4636#*#*) and see if choosing a specific protocol helps.
If you're still unable to maintain a stable connection, I'd say that'd be grounds for returning the phone for a replacement.
Weak advice, I know, sometimes there just aren't any quick solutions.
::Trym

TrymHansen said:
First thing I'd try is to upgrade to the latest official firmware (10C - 0622 for Norway), just to have a baseline for comparison. In theory this firwmare (and baseband) has recently been validated by the norwegian carriers, and should have the best chance of success.
::Trym
Click to expand...
Click to collapse
Thanks for your reply. Do you by any chance have a link to the firmware?

kolaf said:
Thanks for your reply. Do you by any chance have a link to the firmware?
Click to expand...
Click to collapse
Sort of. In this thread http://forum.xda-developers.com/showthread.php?t=1035041 you'll find complete ROMs of the previous versions. Install one of those with SmartFlash, then run the LG Mobile Update tool to get the latest.
::Trym

Okay, I see, downloading now. So it is good enough to use one of the smartflash files, I don't have to use nvflash?

kolaf said:
Okay, I see, downloading now. So it is good enough to use one of the smartflash files, I don't have to use nvflash?
Click to expand...
Click to collapse
No, you don't have to use NVFlash. The advantage of using the smartflash method is that you get a completely "factory fresh" phone, with all the stock content present (movies, music, pre-installed apps) and you're sure to get a matching baseband and ROM.
Note that you have to flash both files, both the baseband and the ROM. The LG update tool won't update if you have a "new" baseband on an old ROM.
::Trym

So the firmwares from that post do not include the baseband? Anyway, I'm currently running baseband 405, so I guess this is sufficient to get the new update. And the new update will then overwrite everything to the latest official version, both ROM and baseband, correct?

kolaf said:
So the firmwares from that post do not include the baseband? Anyway, I'm currently running baseband 405, so I guess this is sufficient to get the new update. And the new update will then overwrite everything to the latest official version, both ROM and baseband, correct?
Click to expand...
Click to collapse
Yes, it does. Each firmware pack comes with TWO files, the baseband and the ROM. To make sure you avoid any trouble, just flash them both, though, as you say, you can probably stay on the one you have, as yes, the LG Mobile Update tool will overwrite both the baseband and the ROM with the new versions.
::Trym

Flashing of old firmware, with subsequent upgrade to latest release for Norway is complete.
I got version V10c, with baseband 1035.21_20110622, kernel 2.6.32.9. My mobile data seems to be enabled as soon as I get mobile coverage (which admittedly is poor right where I live). Even though it pains me, I guess I should leave it as stock for a day or so to see how it behaves.
I guess rooting it shouldn't affect performance in any way?
My initial experience is that it is much more snappy than the stock firmware that the phone came with, but time will show

kolaf said:
Flashing of old firmware, with subsequent upgrade to latest release for Norway is complete.
I got version V10c, with baseband 1035.21_20110622, kernel 2.6.32.9. My mobile data seems to be enabled as soon as I get mobile coverage (which admittedly is poor right where I live). Even though it pains me, I guess I should leave it as stock for a day or so to see how it behaves.
Click to expand...
Click to collapse
Yeah, you probably should, as your mission right now is to find out whether you can get a stable mobile data connection or not.
kolaf said:
I guess rooting it shouldn't affect performance in any way?
Click to expand...
Click to collapse
Not to my knowledge, but I'd still advise you to wait a few days while sorting out the connection issue. Not that I think rooting it would affect that one way or another, but if you can't get it work as it is, you can return the phone in the state it is now, factory fresh.
kolaf said:
My initial experience is that it is much more snappy than the stock firmware that the phone came with, but time will show
Click to expand...
Click to collapse
It certainly is. It also *stays* snappy over time, which can't be said for the 10a/b versions.
::Trym

The first test drive with the new firmware has been completed. On the way out it switched to mobile data flawlessly, but a longer drive it started falling out and reappearing for only short periods. When we stopped at the destination seemed to stabilise with a 3G connection again.
For the return trip I selected use only 2G network. The network connection remained stable for the entire journey.
I will have to test more, but the conclusion seems to be that it has trouble switching between the 2G and 3G networks when moving. I will try the same trip with a Telenor SIM card, and with different combinations of enabling 2G and 3G modes.
By the way, what is the difference between forcing 2G in the regular settings menu and in the special information menu?

kolaf said:
I will have to test more, but the conclusion seems to be that it has trouble switching between the 2G and 3G networks when moving. I will try the same trip with a Telenor SIM card, and with different combinations of enabling 2G and 3G modes.
By the way, what is the difference between forcing 2G in the regular settings menu and in the special information menu?
Click to expand...
Click to collapse
The 2G only setting in the phone menu equals the "GSM only" setting in the INFO-menu. I'm far from an expert in these matters, this thread has an overview: http://forum.xda-developers.com/showthread.php?t=675136& of what the different modes do.
::Trym

More testing seems to indicate that as long as i leave "use 2G only" check, my mobile data connection seems to be pretty stable. It even switches between 2G and 3G, although apparently a bit more conservatively.
I guess I get to keep my phone anyway
Now for some rooting...

Just an update on the results from my testing. The second time I went out my mobile connection never appeared. This was with only 2G checked in the settings menu. In the Info menu, this corresponded to GSM only.
I then changed it to GSM auto (PRL), and then I got my intermittent mobile data again. I then change it to WCDMA preferred, and my data connection seems to be stable for now. This apparently requires much more testing...

F another chapter in the connectivity saga. Having WCDMA preferred selected in the Info menu, things mostly work, although the data connection drops sometimes.
Another problem I'm noticing with the stock ROM is that it usually is unable to reconnect to my home WiFi network when it comes within range. I have the money was selected to reconnect. Sometimes I even find it disabled in the list.

[Q] My IncS completely disconnects, often!

First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?

Have you tried flashing a new Radio? I can't see how that would differ from flashing a custom ROM, but might be worth a shot?

CyanideJack said:
Have you tried flashing a new Radio? I can't see how that would differ from flashing a custom ROM, but might be worth a shot?
Click to expand...
Click to collapse
I haven't tried that, I might in a couple of days if nobody has any other solution though.. I've had the problem for a couple of weeks so I'm kind of used to it!

Naforcee said:
I haven't tried that, I might in a couple of days if nobody has any other solution though.. I've had the problem for a couple of weeks so I'm kind of used to it!
Click to expand...
Click to collapse
You need s-off to flash a new radio m8.
Sent from my Incredible S using XDA App

Adde79 said:
You need s-off to flash a new radio m8.
Sent from my Incredible S using XDA App
Click to expand...
Click to collapse
So much for being "unlocked". Also, hey mate

Yes Naforcee, I have exactly the same problem. And it never happens while using wifi as you said.
It started immediately after I updated to Sense 3 / Android 2.3.5 from HTC.

What was the version of Android in your previous Rom? I had issues when I was on Froyo and went to Gingerbread without flashing a new radio.
Sent from my HTC Incredible S using XDA App

keiichi_san said:
What was the version of Android in your previous Rom? I had issues when I was on Froyo and went to Gingerbread without flashing a new radio.
Sent from my HTC Incredible S using XDA App
Click to expand...
Click to collapse
I had 2.3.5 earlier, so that'd be GB. Same problems with ICS now though =/

Antenna in the back cover got busted?
Maybe the contacts aren't touching enough?

fallenwout said:
Antenna in the back cover got busted?
Maybe the contacts aren't touching enough?
Click to expand...
Click to collapse
Don't think it's a physical problem, I have perfect connection and it just dies out for about 2 min until it reconnects, and I can't search for network when it's down due to active packet transfer..

Could try a new SIM card. Might not fix it, but worth a shot - I've seen this posted as a fix for other people.
I used to have this problem on certain radios on the Desire Z, after flashing around a bunch of radios to try all of them. Stuck with one and it went away, so it was software for me.

kaijura said:
Could try a new SIM card. Might not fix it, but worth a shot - I've seen this posted as a fix for other people.
I used to have this problem on certain radios on the Desire Z, after flashing around a bunch of radios to try all of them. Stuck with one and it went away, so it was software for me.
Click to expand...
Click to collapse
New SIM was my first try to fix it, it didn't work.. I guess radio is the only solution left!

Naforcee said:
New SIM was my first try to fix it, it didn't work.. I guess radio is the only solution left!
Click to expand...
Click to collapse
What version radio do you have installed?

Naforcee said:
First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?
Click to expand...
Click to collapse
I was sick and tired of these problems, and then i made s-off, rooted and isntalled custom ROM and changed Radio 20.4802.30.0822U_3822.10.08.28_M and now everything is good

He has: 3822.10.08.28_M
Sent from my Incredible S using XDA App

Nonverbose said:
What version radio do you have installed?
Click to expand...
Click to collapse
He has: 3822.10.08.28_M
Sent from my Incredible S using XDA App

Naforcee said:
First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?
Click to expand...
Click to collapse
Try flashing this radio http://forum.xda-developers.com/showthread.php?t=1471861 using the ADB method. If that doesn't help I recommend doing a full wipe and reinstalling the ROM. There are a lot of different custom ROMs for IncS which can be found at http://forum.xda-developers.com/showthread.php?t=1136463
I personally like Niks ROM and Android Revolution HD.

Looks like rom installation issue.

My son's Inc-S having a similar problem to the OP, but more severe. A couple of weeks ago he entered airplane mode with all behaving normally, but since exiting airplane mode at the end of the flight he hasn't been able to register on the network (voice or data). We've tried:
fiddling with all the network settings
change sims (all sims work on my Inc2, none work on his IncS)
cleaning the antenna connections
reboot
factory reset
flashing new ROM (Android Revolution HD 2.3.0)
flashing new radio (3805.10.03.29_M)
So far, no satisfaction. We're still seeing no bars of reception (with an X) in the notification area, and don't have the option to manually or automatically register with any network operator (although several occasionally show up as options under "Search Networks"). We usually get the error message, "Unable to search for network while packet connection is active" when trying to select a network. Funny thing is, mobile network data has been shut off on his phone for the past month so the packet connection is definitely not active (wifi is on). Based on a network signal analyzer app, the phone is receiving the same mobile network signal as mine (-65 to -70 db) when they are side-by-side, so the problem does not appear to be in the antenna. The phone works just fine using wifi but is useless as a phone.
Any ideas about what to try next?

scrinch said:
My son's Inc-S having a similar problem to the OP, but more severe. A couple of weeks ago he entered airplane mode with all behaving normally, but since exiting airplane mode at the end of the flight he hasn't been able to register on the network (voice or data). We've tried:
fiddling with all the network settings
change sims (all sims work on my Inc2, none work on his IncS)
cleaning the antenna connections
reboot
factory reset
flashing new ROM (Android Revolution HD 2.3.0)
flashing new radio (3805.10.03.29_M)
So far, no satisfaction. We're still seeing no bars of reception (with an X) in the notification area, and don't have the option to manually or automatically register with any network operator (although several occasionally show up as options under "Search Networks"). We usually get the error message, "Unable to search for network while packet connection is active" when trying to select a network. Funny thing is, mobile network data has been shut off on his phone for the past month so the packet connection is definitely not active (wifi is on). Based on a network signal analyzer app, the phone is receiving the same mobile network signal as mine (-65 to -70 db) when they are side-by-side, so the problem does not appear to be in the antenna. The phone works just fine using wifi but is useless as a phone.
Any ideas about what to try next?
Click to expand...
Click to collapse
Probably a RIL-Radio communication issue. Recommended radio is the newer 3822.01.08.14_M radio, so maybe you should try that.

Several unique problems

Hi, I have several problems with my galaxy note that I have not been able to fix, find anything about similar problems in the Note community and I have no clue on how to solve them.
1) 3g - No matter what ROM I am on, be it GB, ICS, JB TW/AOSP, then whenever there is a 3g icon in my status bar, my internet slows down to speeds you cannot use. I once managed to try the 3g on the speedtest.net app and I got I believe 0,02/0.01 Kbps download and as you know, that is unbearable. Does anyone have any suggestions for a fix? Perhaps flash a new Modem, a new ROM, try the stock GB that I got with my carrier from where I got the phone?
2) With the WiFi at my home: If I am "far" away from the router (the router is in one corner of the house, I am on the floor above at the other corner), then I sometimes get randomly disconnected and it says in the settings "Authentication Error". Again, all ROM's. I have a very strong signal in that corner (2 or 3 bars) but I will probably just get the answer that is expected - I am too far away from the router.
3) I currently have installed TW 4.1.2 GalaxtusMod v3 XXLT5 (latest) and I have the latest (1.3.7) c.o.h.'s HelloWorld kernel flashed to the device.
I cannot "uninstall" system apps using TB or other root uninstaller apps, however I can manually remove the apps using Solid Explorer. When I try to use TB (free) then after selecting about 30 apps in the batch mode to remove, then the phone would usually crash and reboot after about 10 uninstalled apps (these apps are basic things - maps, talk, youtube, widgets etc. no important system apps). I used to simply uninstall them 5 at a time and it worked, with my current combination though it doesn't report any error at the end but the apps are still installed. So if anyone else is having problems (I have problems on any configuration in batch uninstalling a lot of apps) removing in batch apps with titanium backup or has been lucky enough to find a solution then I would be grateful for a solution or just say if it happens to you too.
Also I always do a proper clean install, with stock firmware I use Odin on the PC and I always do wipes (caches, system, data, preload etc) before flashing anything.
*edit*
4) When I am charging the phone using the stock adapter but using a different cable (same length cable in good condition) then the phone is very laggy. The interface jumps and is jittery.
Luckily I have a brother who also has a Galaxy Note and he doesn't have neither problem 1 or 4 (don't know about 2,3)

XxPixX said:
Hi, I have several problems with my galaxy note that I have not been able to fix, find anything about similar problems in the Note community and I have no clue on how to solve them.
2) With the WiFi at my home: If I am "far" away from the router (the router is in one corner of the house, I am on the floor above at the other corner), then I sometimes get randomly disconnected and it says in the settings "Authentication Error". Again, all ROM's. I have a very strong signal in that corner (2 or 3 bars) but I will probably just get the answer that is expected - I am too far away from the router.
Click to expand...
Click to collapse
I've often been in a corner upstair floor with weak wifi signal, only 1 bar, because router is downstair. Download/Upload's are very slower than when I'm near the router but I've never got the "Authentication error" problem.
Just a witness from my own situation of wifi signal weakness.

qnt said:
I've often been in a corner upstair floor with weak wifi signal, only 1 bar, because router is downstair. Download/Upload's are very slower than when I'm near the router but I've never got the "Authentication error" problem.
Just a witness from my own situation of wifi signal weakness.
Click to expand...
Click to collapse
Thanks for that, I asked my brother the other day and he gets it but rarely... guess it is a problem with my router.
Has anyone else got some insight to the other problems?

Bump?

try different kernel/ modem combo. Most custom roms dont have modem, so if your with the same modem, that could be it. Try one for your region. see the modem thread in development section.
Now 3g,
- check your provider as well, ask them if they severed your connection. Some providers have been known to do that.
- check apn settings on phone if they are like provider
- check if your not roaming ( other network then provider)

baz77 said:
try different kernel/ modem combo. Most custom roms dont have modem, so if your with the same modem, that could be it. Try one for your region. see the modem thread in development section.
Now 3g,
- check your provider as well, ask them if they severed your connection. Some providers have been known to do that.
- check apn settings on phone if they are like provider
- check if your not roaming ( other network then provider)
Click to expand...
Click to collapse
Thanks for this, after I get back from Israel on 1st June then I will try downloading some modems to try out. If that doesn't work I guess I could ask my provider whether they have done anything. Thanks

XxPixX said:
Thanks for that, I asked my brother the other day and he gets it but rarely... guess it is a problem with my router.
Has anyone else got some insight to the other problems?
Click to expand...
Click to collapse
HI
I use a note and have this problem with the wifi... when signal is very low i have authentification error ... my wife has the note2 and same problem so it's not from our note but from the router ... I change the wifi canal but always the problem...
Good luck
Regards

try also different sim, to eliminate sim issues vs phone

Losing mobile signal frequently

I have an issue where I lose mobile signal every few minutes. If I use Llama and check the "recent" tab I can see Cell: -1:-1:-1 every 10 mins or so and if I'm using the phone the signal will go to nothing, then within a few seconds go back up. Has anybody else seen this issue? I've done a factory reset and it didn't help. I'm waiting to hear back from Sony support, but they're been pretty useless for me in the past.

My signals dropsout all the Time
chrisduffer said:
I have an issue where I lose mobile signal every few minutes. If I use Llama and check the "recent" tab I can see Cell: -1:-1:-1 every 10 mins or so and if I'm using the phone the signal will go to nothing, then within a few seconds go back up. Has anybody else seen this issue? I've done a factory reset and it didn't help. I'm waiting to hear back from Sony support, but they're been pretty useless for me in the past.
Click to expand...
Click to collapse
I encountered the same problem on my xperia l.
You could try taking the battery out the phone when it is switched on "hard reset" ,then take out the sim card and reboot, then switch off, put sim card back in and reboot, it may take a couple of minutes, it's worked for some, Me included
Another thing You could try is putting Your phone into GSM mode from settings but this means You need to keep changing modes when data roaming

New here?
ady999 said:
I encountered the same problem on my xperia l.
You could try taking the battery out the phone when it is switched on "hard reset" ,then take out the sim card and reboot, then switch off, put sim card back in and reboot, it may take a couple of minutes, it's worked for some, Me included
Another thing You could try is putting Your phone into GSM mode from settings but this means You need to keep changing modes when data roaming
Click to expand...
Click to collapse
Whilst we appreciate the sentiment please take a look at the forum your posting your advice in. The Xperia Z1 does not have a removable battery and the term 'switched on ''hard reset'' ' makes no sense unless you mean using the red button in place of a battery pull.
Not trying to be rude but its frustrating when your device drops signal and the best advice you get is regarding completely different hardware.
To Chrisduffer: Have you rooted your device/unlocked the bootloader or flashed another ROM? If so perhaps consider an alternative Kernel or a software update via the flashtool if its still using the stock kernel?

same problem. No root / no flash. Stock 4.3. Same issue even before update to 4.3.
Any idea what to do? My signal drops down every day like 5-6 times for about 20-30 seconds with no reason. I'm also not able to connect to 3G (at least phone is not showing 3g sign next to the signal strenght).

Hmm...this is interesting because actually I saw this up and down on mine too but I was able to call and receive calls anyway...so I newer bother if is an issue or not...but I losing the internet connection frequently so what's wrong?

Instresting...mine too...stock 4.2.2 rooted, Lb....but when my signal totally drops I am able to call or text!
Sent from my C6903 using Tapatalk

Sounds almost like the modem driver is crashing and then restarting. Factory default is what I would try first, unless this is happening in places where you have weak signal or are in an enviroment which would cause weak signal (inside, thick walls, metal, etc.).

xasbo said:
Sounds almost like the modem driver is crashing and then restarting. Factory default is what I would try first, unless this is happening in places where you have weak signal or are in an enviroment which would cause weak signal (inside, thick walls, metal, etc.).
Click to expand...
Click to collapse
Hypothetically.

Had a few issues myself with the same stuff. Try another radio via flash tool. Just deselect everything else and just flash baseband, no wipe. Be careful when flashing stuff.
Sent from my C6903 using XDA Premium 4 mobile app
---------- Post added at 04:58 AM ---------- Previous post was at 04:57 AM ----------
Pick the correct base and type. (Generic /carrier)
Sent from my C6903 using XDA Premium 4 mobile app

i'm from Italy and i have the same problem, i removed the brand with a stock rom (4.3) and now the signal fall down often after took a few signal... all this, if i remember, also when i had the branded rom (4.2.2); how can i solve this problem? changing radio drivers? how? thank to all

Makaze33 said:
i'm from Italy and i have the same problem, i removed the brand with a stock rom (4.3) and now the signal fall down often after took a few signal... all this, if i remember, also when i had the branded rom (4.2.2); how can i solve this problem? changing radio drivers? how? thank to all
Click to expand...
Click to collapse
Yes, alternative radio driver should help, if it's not HW issue.
I will try to give the phone on a warranty check ... hopefully they will be able to tell me what's wrong ..
if not, I'll go your way = flashing different ROM with different radio.

cyber-mythius said:
Yes, alternative radio driver should help, if it's not HW issue.
I will try to give the phone on a warranty check ... hopefully they will be able to tell me what's wrong ..
if not, I'll go your way = flashing different ROM with different radio.
Click to expand...
Click to collapse
thank you for the answer which rom could i install? now i have the rom for italy (IT) that i found here... but i had this problem also with the completely stock device so could it probably be an hardware issue?

You think you have signal issues?

Almost forgot, I had a phone come in once and it had the same issue, ended up only recognising the sim card every now and again, you could try another sim, or even send it back for repair which is what happened with the phone that was brought to me.

Kirkymole said:
You think you have signal issues?
Click to expand...
Click to collapse
:laugh: :laugh: :laugh:
so i'm going to send it to warranty, i hope it is an hardware problem otherwise i'll have to sell it, i can't stay witheout signal as soon as i hold it on my hand

losing data signal
I am having the same issue
Any idea?
Should return the phone?

I sent the phone to the warranty, I have also the results of the tests and they are all passed... So I really don't know how to do... If I find a nexus 5 i'll try to change this xperia for that, I can't stay whiteout signal when my old iPhone 4s receive it very well
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