[Q] No signal at all. - Xperia Z2 Q&A, Help & Troubleshooting

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

Related

[Q] X10i phone function abnormal , because of task manager ?

my firware is R26 Root. My friend told me many times my phone signal is not available. but i checked the phone , still with signal strength.
I doubt the main reason is I installed task manager to control memory usage. It might close some important program or service to cause phone function abnormal.
I ever swith to flight mode then back. this still can't solve it , until i power off , then power again. Any one know which service or program must be exist to prevent my phone working perperly ? Thanks.
I also have the same problem, sometimes my friends try to call and it goes straight to the voicemail service, even when my signal is at full strength...
Sent from my X10i using XDA App
My phone has been doing the same thing recently. By any chance are you both on Orange UK? There have been alot of data and network issues recently. Try phoning tech support and they have an automated message saying that there are problems. It's been going on for nearly two weeks on and off. Its getting really annoying now.
O2 uk here, have had this issue since I got the phone on and off.
Flashing, updating, rooting, nothing has corrected it.
It is also a problem for some of my friends on different networks, and this leads me to believe it is the phone, software or hardware not sure, as opposed to the network.
Sent from my rooted x10i using Tapatalk.
Same
I find that when i enter my pin code en register my sim. After it went to flightmode. I won't go into flightmode again after that. Unless i use the taskkiller again.
Also not everytime i kill all apps, this happends.
Same with you guys ? Running Rooted R2BA026 here x10i
OrangeUK here... same problem... will phone them tomorrow and post here the results.. I also noticed a strange error when i activate and deactivate plane mode, 3g stop working... and i need to reboot the phone to get it to work again.. same thing happen when I deactivate and activate again MMS&DATA Connection... then i have to reboot the phone to make it work again...
Anyone has the same prob???
Sent from my X10i using XDA App
Task killer gave a strange fault for me. Make a call, talk as you do, screen goes black, loud click in ear piece, screen comes back on. I had task killer set to work on screen going blank. Removed it, fault gone.
Sent from my X10i using XDA App
Remove the dialer and the android.serviceprovider.apk (something like that) from the task killer auto kill list. Put it on ignore list. It should work fine after that I guess.
Please don't even start about orange uk. I switched from o2 to orange so I could get a white x10. Worst mistake I've ever made. Where I work I get constant signal drop out even though the phone says I have full signal and it 3g signal is always inconsistance, and I work in a major town in essex. Had these problems ever since I've owned the phone and had many an argument with customer services who dont listen to you and just say there are a couple of masts in the area that are broken. Basically orange are full of s**t about there wonderful coverage in the uk!
Sorry you have had to read all that, just my 2 cents.
-------------------------------------
Sent from my X10i using Swype
Mines done it for the first time today. Vodafone uk.
I do work in a signaless office in edinburgh. Just figured it was that. Off and on it was all good
Sent from my X10i using XDA App

My phone has no reception!

Hi guys. For some reason my phone keeps losing its reception, and no calls are being made. It keeps saying call ended... Its not my sim card cuz it works fine with my other phone, so it has to do with this phone. Any one experienced this or can help?
It just randomly started
Sent from my X10a using XDA App
any changes made recently? new FW, new apps, new widgets that control 2g/3g?
ive not had any similar problems, but just tryin to give a few suggestions
good luck!
Try the soft reset or repair via SEUS.
Mine started having Wi-Fi issues today (it wouldn't connect to the wireless network, with or without encription).
Did the soft reset, now it's working.
Weird bugs, I guess
You're holding it wrong... Also try wrapping some gaffer tape around the outside edge. Sorry they're no longer giving away free bumper cases...
Edit:
...Sorry, I thought this was the iPhone 4 forum.
Sent from my iPhone 4 using XDA App
I have had the same issue intermittently since I got the phone. Tried a restore and a newer fw. Didn't help, I'm waiting a bit longer and sending it off for warranty. A few of my friends have x10s also and haven't had this problem...
shukla said:
Hi guys. For some reason my phone keeps losing its reception, and no calls are being made. It keeps saying call ended... Its not my sim card cuz it works fine with my other phone, so it has to do with this phone. Any one experienced this or can help?
It just randomly started
Sent from my X10a using XDA App
Click to expand...
Click to collapse
You still have this problem Shukla? Mine started doing this today too..

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

No Service-Hardware or Software ??

First time asking for help but I can't find the answer to my problem. I have no service on my X10, no calls, text, data. No service at all, just grey bars with a BIG X. I don't know how to tell if it's a hardware or software issue. I don't think software is the problem. I put my phone in airplane mode one night and the next morning turned back to normal mode. I noticed later I had no service. I had been running the Wolf 4.0.0 for about a month when this happened, with no problems at all. I have flashed back to 2.1 and then 2.3, no change. Searched and entered APN's for ATT. I did find some posts about "CRASHING SYSTEM SERVER" but I don't think it applies to this software. Am I missing something? I sure don't want to pay Sony $185.00 just to re-flash my X10 with a quick fix.
Any Ideas???
My setup is:
Wolf_Xperia_4.0.0
2.6.29-00054-g5101537
[email protected]SEMCHost#1
2.1.71
Thanks
If anyone is interested below is the link to the Sony service manual with disassembly and assembly videos, Schematics, tests, and part numbers.
http://www.mediafire.com/?1ivyrrkhoy2c6yk
Try your simcard in a different phone to make sure the sim is working as they can sometimes die I've had a few die on me over the years without even touching the sim since it was put in the phone.
Sent from my Nocturnal X10i using XDA Premium App.
Futura2000 said:
Try your simcard in a different phone to make sure the sim is working as they can sometimes die I've had a few die on me over the years without even touching the sim since it was put in the phone.
Sent from my Nocturnal X10i using XDA Premium App.
Click to expand...
Click to collapse
Thanks, but have a new sim fromm ATT, sorry I forgot to mention that.
No Service Issue
I have same xperia x10i with baseband .71
it had same problem few months back and it was working fine
changing sim caused the problem again
now it wont get any signal with any working sim
Is that problem hardware related or software related
FYI i have tried stock 2.3.3 cm7mod and team rom 3.8/3.9 but no service...
Help plz
Regards,
I don't know what the problem was with my phone. It started working one day and has been fine ever since. I do know that I was using the phone in a weak signal area, 1-2 bars max, before it stopped working and when it started working again I was in a full bar area. A software glitch or antenna problem, not sure. I have 2 of these phones and side by side the network radios have completely different signal profiles. The phone I was having trouble with still gets half the signal the other one gets.
Thanks

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...

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