Mobile data and mobile calls hang, no one can call me - Xperia Z2 Q&A, Help & Troubleshooting

Hello everyone. Few month ago I bought z2 in German. The phone losed connectivity with mobile network very often. The people hear me very bad. The call is interrupted after 15-60 seconds. Even the display is showing that the phone has perfect signal, I can't call to anyone or do a USSD request. It happens with 3 different operators in different places. If I do power off the phone and then power on (just reboot doesn't help), the mobile network works 5-30 minutes, but then the problem is back. I returned phone to the shop and they repaired it. But the problem still persits, I turn on the phone all work good, but after some time, mobile data hangs and no one can call me. Airplane mode on/off doesnt help, only shutoff/turnon help on few hours. Z3c is working perfect on the same places and operator. The firmware is the latest official, i tried hardreset and reinstall via flashtool.
Does anyone have any idea?

My brother had this problem 2 or 3 times, but always with a Samsung device. After the motherboard got replaced it was OK again.
Give it back to the shop and keep it as long there, as they don't repair it. Maybe they have just reflashed software hoping for problem fix.
Sent from Xperia Z2
Luckily not from an iPhone = Yesterdays technology at tomorrows prices

I have sent the phone to the seller twice, they "repair" it twice, but the problem still persists, after few hours or loosing network noone can call me. The system setting shows that network type is unknown. The problem is that I bough the phone in the other country and sending the phone takes too much time.
Does anyone has/had the same issue?

Michael_Kr said:
I have sent the phone to the seller twice, they "repair" it twice, but the problem still persists, after few hours or loosing network noone can call me. The system setting shows that network type is unknown. The problem is that I bough the phone in the other country and sending the phone takes too much time.
Does anyone has/had the same issue?
Click to expand...
Click to collapse
you bought your phone in Europe, so you can send it to every european official Sony service

maddboss said:
you bought your phone in Europe, so you can send it to every european official Sony service
Click to expand...
Click to collapse
The problem is that I'm from Russia, and European warranty doesn't work in Russia.

Michael_Kr said:
The problem is that I'm from Russia, and European warranty doesn't work in Russia.
Click to expand...
Click to collapse
Oh sorry, I didn't know that. Then you're right that's a long way to sell it to service

Related

Signal Loss

I've been having this problem for some time but wasn't entirely sure whether it was my network (O2-UK) or the phone. Basically at random intervals my phone will lose signal, I didn't realise quite how often until I installed No Signal Alert and today for example I've lost signal 5 times, not for any more than 30 seconds each time.
The reason that I think this is a problem with the phone is because I've noticed that if I'm connected to wi-fi that also cuts out at the same time.
Is this something anybody else has come across? It's a non-rooted X10 on R2BA026.
Have been having exactly the same problem for the last few weeks. o2 have had the phone back for repair twice, the 2nd time it was exchanged for a new handset but still seems to be occurring. My brother also has the same phone, network and problem.
Strange that all the problems are occuring on the same network. I originally rooted my phone and upgraded to the newer build, don't know if you're on the normal O2 software?
Would be interesting to know if anybody has had the same problem on a different network.
Same Problem
Hey,
im in Australia, with Optus On SE X10i
and ive had the same issue whether rooted or not, but only since upgrading to 26 software, didnt have this issue on 16, also when i sued to use Advance Task Killer, if i opened the program and killed all apps, then 2of 3 times my signal would go down to NO SERVICE for about 30 seconds and then come back full force.
To me it seems like a potentual software issue that specific to 26 software
I've noticed that when I use a task killer to close the sony ericsson backup app that causes me to lose all signal (network and wi-fi) straight away, but I still lose signal randomly even with that closed. I never noticed it happen before I upgraded to this software either, so you could be onto something there.
How do we go back to previous versions?
jayfenney said:
Strange that all the problems are occuring on the same network. I originally rooted my phone and upgraded to the newer build, don't know if you're on the normal O2 software?
Would be interesting to know if anybody has had the same problem on a different network.
Click to expand...
Click to collapse
had flashed using omnius and had the problem on generic uk software as well, had to flash back to o2 to send in for repair.
getting handset swapped for something different, hopefully that will sort it!
cricka15 said:
had flashed using omnius and had the problem on generic uk software as well, had to flash back to o2 to send in for repair.
getting handset swapped for something different, hopefully that will sort it!
Click to expand...
Click to collapse
How did you flash it back to the original?
jayfenney said:
How did you flash it back to the original?
Click to expand...
Click to collapse
Using omnius,luckily just before it turned to pay to flash licensing.
Sent from my X10i using XDA App
Well I've just flashed it using the X10 flash/unbrick tool and went incredibly smoothly, now back running 016 and reinstalling all my apps using trusty astro. I'll make sure I keep the no-signal app running and let you know whether this has fixed the problem.

No service - problems

I have a problem with LG Optimus One 10Vn
From time to time it loses signal completly and won't come back only if i reboot the phone.
I've restored to factory but it didn't solved the problem
And i'm not the only one with this problem a colleague has the same problem
No service
Hallo,
I also struggled with this problem. From time to time the phone lost the connection to the german provider T-Mobile. Seems to be a problem with some Micro-SIMS.
I upgraded the firmware vom V10A to V10C, which cured the problem for me so far!
Regards
Hans
I have the latest FW V10N
i have the same firmware and no problems so far ... installed it about 4 days ago , data connection works fine connected 24 / 7 no signal problems at all .
This happens only if i loose the signal then it won't come back only if i reboot the phone
I also encountered this issue a couple of times a few weeks ago, hasn't happened since, to get service back i just turned airplane mode on and off. Don't really know what made it stop. (Vodafone Romania)
If it still does that try a hard reset and if it doesn't work go to vodafone and tell them to exchange it @ warranty ... Dar sa fii mai cu tupeu ca romanii nostri sunt nesimtiti la garantii
Sent from my LG-P500 using XDA App
i did try with the airplane mode but it doesn't work
and i did the hard reset part like 3 times already
it i'll get that error again i'm going to warranty to get another one
Had the same problem. Phone was working fine, came back one day to find it shut off and [no service]. Nothing worked, airplane mode, complete wipe.. nothing.
I was about to return it when I tried one last thing..
Wifi and Networks->Mobile network settings->Network Operators->Search networks
fixed it.
Hmm then it seems like an OS bug. If the signal drops it won't search for it again
What nerwork are you on ? It's weird i never had this problem ...
Sent from my LG-P500 using XDA App
.............. Vodafone ..............
I'm having the same problem.
sometimes it looses signal and won't come back until rebooting.
Turning plane mode on/off won't solve the problem. Neither searching for networks like some one said. It finds all carriers available but won't connect to any of them. Only rebooting gets signal again, which is a bit frustrating.
My fw is v10a... I think this is the last one available in my country
Sent from my LG-P500h using XDA App
cryptow said:
I'm having the same problem.
sometimes it looses signal and won't come back until rebooting.
Turning plane mode on/off won't solve the problem. Neither searching for networks like some one said. It finds all carriers available but won't connect to any of them. Only rebooting gets signal again, which is a bit frustrating.
My fw is v10a... I think this is the last one available in my country
Sent from my LG-P500h using XDA App
Click to expand...
Click to collapse
What's about SIM card? Do you have it long? I heard about some problems, if somebody had too old SIM card.
The_ERROR said:
What's about SIM card? Do you have it long? I heard about some problems, if somebody had too old SIM card.
Click to expand...
Click to collapse
It has at least 7 years. Maybe I'll try to get a new one to see if it works.
Sent from my LG-P500h using XDA App

[Q] problem when 3g is on

Hi, i'm using this phone and everything works fine,but when i turn on 3g, phone restarts every 10-15min. It's unlocked from foreign network. Did anyone have the same problem?
That doesn't sound right, have you flashed any firmware recently?
sikodemon said:
That doesn't sound right, have you flashed any firmware recently?
Click to expand...
Click to collapse
no i didn't. Actually i don't know to do that, i bought this phone recently, i only did a hard reset,but the same problem appear. I also didn't update to 7.8
Just send it back, if you're in the UK like me they arrange a courier to pick the phone up and repair/replace it. Very quick turn-around too, I had mine back in a few days! Go to http://www.nokia.com/gb-en/support/troubleshooting/ and then click on Diagnostics/Support/Repair and fill out the forms.

HELP! no signal

Hello
I got my xperia z2 D6503 2 days ago brand new sealed. I inserted my Net10 sim and it worked like 1 day and than I noticed that there was signal issue first I thought it was because of area than I found out it was phones fault since same sim card worked perfectly on my old xperia z and also on xperia z2 Tab and on my brothers galaxy s4. strange thing is it shows low signal only when LTE is on and I can send and receive text messages but I can't make calls. as soon as I turn off LTE it looses signal and no text or call go through.
I tried factory reset, 2 different sim cards, even bought new sim card, numerous restarts and nothing helps. searched web for this issue and nothing at all.
so anyone else had this experienced? any solutions?
thanks
Build: 17.1.A.2.69
baseband: 8974-AAAAANPZQ-00004-07
giozera said:
Hello
I got my xperia z2 D6503 2 days ago brand new sealed. I inserted my Net10 sim and it worked like 1 day and than I noticed that there was signal issue first I thought it was because of area than I found out it was phones fault since same sim card worked perfectly on my old xperia z and also on xperia z2 Tab and on my brothers galaxy s4. strange thing is it shows low signal only when LTE is on and I can send and receive text messages but I can't make calls. as soon as I turn off LTE it looses signal and no text or call go through.
I tried factory reset, 2 different sim cards, even bought new sim card, numerous restarts and nothing helps. searched web for this issue and nothing at all.
so anyone else had this experienced? any solutions?
thanks
Build: 17.1.A.2.69
baseband: 8974-AAAAANPZQ-00004-07
Click to expand...
Click to collapse
Same issue with my z2... only when I hold it a certain way... I'm on Bell mobility in Canada and got the phone a few days ago.
I've been experiencing the same issue ever and I've had my phone over a month, I'm on EE in the uk running the .55 firmware. My phone is currently in repair to fix this problem so I'll get back to see if it can be fixed
Sony has no solution in USA and can't repair so I returned for exchange to seller. I though it was only me so looks like gonna be big issue
giozera said:
Sony has no solution in USA and can't repair so I returned for exchange to seller. I though it was only me so looks like gonna be big issue
Click to expand...
Click to collapse
Hey, so did the exchange solve the problem for you? I am using NET10 as well and while I do get signal on all networks (2G. 3G, etc..) I notice that it isn't as good as almost any other phone I've had. I live in an area that has poor signal and places that I get 1-2 bars on other phones I get 0-1 on this phone, though when I'm in upper town where signal is great I get about the same as others do. I'm just not sure if my phone is defective or this is just how it is. I really don't want to wait to exchange plus the seller seems reluctant to do so..
I had to fix my APN (wireless &networks -> mobile data).
I Google the correct settings for my carrier(ATT/USA), and saved the updates and it worked IMMEDIATELY.
it's been solid since ever since. Note there are differences for the 3g VS LTE versions. Make sure you enter the right settings.
Good luck!
CCDillon said:
Hey, so did the exchange solve the problem for you? I am using NET10 as well and while I do get signal on all networks (2G. 3G, etc..) I notice that it isn't as good as almost any other phone I've had. I live in an area that has poor signal and places that I get 1-2 bars on other phones I get 0-1 on this phone, though when I'm in upper town where signal is great I get about the same as others do. I'm just not sure if my phone is defective or this is just how it is. I really don't want to wait to exchange plus the seller seems reluctant to do so..
Click to expand...
Click to collapse
I got replacement toda so far so good.
yea I noticed that signal is not as strong as it was on my Xperia Z. even lost signal at the places where my Z was solid. hope this could be solved with future software update.
Ken_Burnside said:
I had to fix my APN (wireless &networks -> mobile data).
I Google the correct settings for my carrier(ATT/USA), and saved the updates and it worked IMMEDIATELY.
it's been solid since ever since. Note there are differences for the 3g VS LTE versions. Make sure you enter the right settings.
Good luck!
Click to expand...
Click to collapse
I did entered correct APN's as I mentioned it was working great for almost day and Than suddenly stopped working so if I had entered wrong APN's it wouldn't worked first time I powered it on. plus same sim card worked well on other LTE phone while was not working on my new Z2, so it was not APN issue.
Try rebooting 3-4 times and then wait. This should solve the problem.
Check the baseband version online and on your phone.
There is also a firmware update but you have to cable your phone to a computer and let it install the Sony software on the PC/MAC ... Mine updated yesterday...
Worth a shot if you haven't done so already.
giozera said:
I got replacement toda so far so good.
yea I noticed that signal is not as strong as it was on my Xperia Z. even lost signal at the places where my Z was solid. hope this could be solved with future software update.
Click to expand...
Click to collapse
Thanks man, it seems that's just how the phone is, maybe I can stop worrying so much about that now, especially since this Z2 I have has no defects that are so plentiful on other user's phones.
And like I said, it's not such a big deal when I'm in places with adequate coverage so it's tolerable. I updated to .402 yesterday and there isn't any change with signal but I'm holding out for more updates that can help out with coverage. I'm thinking once the Z2 is released in some way in the US (carrier or Sony store) that there will be an update then that may help us out.
I'm probably the last person to be offering advice in this forum, however, just a couple days ago I noticed I had no data connectivity at all. Calls and texting still worked, but no cellular data. All my APN setting were correct and even though airplane mode was not selected, turning it off and on again got my data connection back. Just something stumbled upon and I have no idea if it applies to anyone elses issue here. Just thought I'd toss it out there in case it helps just one person.
bluheart said:
Try rebooting 3-4 times and then wait. This should solve the problem.
Check the baseband version online and on your phone.
Click to expand...
Click to collapse
Solve which problem? The one i posted in very first post or the weak signal on my replacement? I did more than 5 reboots to solve first proble but nope.
Now this very weak signal worries me it loosed signal at places where my old Z was great. Hope this phone doesn't end up super problematic
Sent from my SGP521
Sony Service will service/replace the set, if needed. So please do check in there.
phone is amazing everything works smooth, but weak signal is getting on my nerves! looses signal very often and data gets really slow because of low signal even when LTE is available. I live in brooklyn ny and my xperia Z didn't have this issue at all. hopefully this could be fixed soon by software update.
Drop down quick settings from home and ensure LTE is ticked on.
Sent from my D6503 using XDA Premium 4 mobile app
augie7107 said:
Drop down quick settings from home and ensure LTE is ticked on.
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
In that case there is only one way to sloved problem
Call sony xperia department let them fix it or replace new one. Don't even think phone can repair itself
Same problem
My sisters got the same problem,
Help line, Tech team no help what so ever !!!
Been on the phone for over 2 weeks !!!
They wont solve the problem what so ever !
One tech team even said "buy a new phone" !! such great customer service !!
They are wanting £150 for it so it can be "fixed"..... also wanting £40 for the month contract despite not having the phone !!!
I understand who you feel... they are no use what so ever and rude...

[Q] No signal at all.

Hello. I bought my Z2 about a month ago. Everything worked out well.
One day at work i noticed i have no signal at all, with the red X next to the signal bars. I thought my sim card was just loose or something
Tried other sim cards on the phone and they dont work either. The phone DOES get reception (even h+) somewhere when in town, but still with only 1 or 2 bars. (103-105dbm)
At home and at work i get no signal at all...
Tried messing with APN settings and checked them many times. Tried fiddling with airplane mode on and off.
At the moment im backuping the phone and going to try a factory reset. No hopes that it will work though.
Any ideas? The phone HAS been under a warranty screen repair because i shattered it on the first week of use (was my wife actually)
But it worked fine for many weeks after the glass repair..
Thanks!
Try resetting via flashtool or Sony PC companion
If the issue persists then send your device for a replacement
Sent from my D6503 using XDA Premium 4 mobile app
Yeah took it to the store i bought it from. Went to repair.... suprise suprise i got a message today about a delay because the device has been sent to "Sony main repair"
It's always when you explain a problem that they don't believe you.
They probably just sent it to their own repair for some dude to test their card in the phone cause they think i'm so stupid that i haven't tried that yet. Always just: "of course its fixable easy piece of cake"
Just replace my phone already......
But note all: Batch 14w19
Will be interesting to know if anyone else will get connection problems later on or not.
I never have 4G signal but thats due to firmware, same goes for my wifi... Wifi is flaky
Sony need to go back to the erricson days when they were realy competing
Their customer service is uneducated and their phones are Ok, Xperia Z/ZU was best xperias yet, most others are generaly terrible, Z2 is ok but them manufacturing errors are just bad
From pre poduction all the way to 14w23 is faulty
Fail sony
Sent from my D6503 using XDA Premium 4 mobile app

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