Lte not working after factory reset - Sony Xperia XZ Premium Questions & Answers

Hi all, I first have this error whenever I update or install new app. It'll show up the notification this:
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Then the sim lost its signal and lock my phone automatically. I'm not sure how to fix this, so I made a factory reset, however, the problem still persist.
Worst (at least to me), the lte does not working at all. I tried "search providers" both manually and automatically, restarted, re-plug the sim out but still not working.
I bought this phone international version; T-mobile sim.
Can anyone please help? Just bought this phone for 2 weeks and feel bad if this can't be solved.
Thank you.

Is your apn correct?

bidarin_grandis said:
Hi all, I first have this error whenever I update or install new app. It'll show up the notification this:
Then the sim lost its signal and lock my phone automatically. I'm not sure how to fix this, so I made a factory reset, however, the problem still persist.
Worst (at least to me), the lte does not working at all. I tried "search providers" both manually and automatically, restarted, re-plug the sim out but still not working.
I bought this phone international version; T-mobile sim.
Can anyone please help? Just bought this phone for 2 weeks and feel bad if this can't be solved.
Thank you.
Click to expand...
Click to collapse
I cannot see what error you are getting but I will bet it has to do with Visual Voicemail.
Here is what to do for this error:
Go to settings > Apps & Notifications > App info > Phone > select "Force Stop > then select Storage > then Clear Cache > then Clear Data. Then get out of settings and open phone app > top right corner select three dots > settings > calls > Voicemail > there is the Visual Voicemail toggle....turn it off > then reboot. I was able to do a Play Store update and the error message is gone. Follow my steps to make it work for you.
As for LTE...how do you know you are not getting LTE? Remember that on this phone, international version, on T-Mobile that it will ONLY say 4G. This is correct. I have the same phone on T-Mobile. Also, when making a phone call it will drop to 3G for data while in the call...normal.

Related

Fix for Chinese device lack of data/data problems.

I've owned 2 Chinese cheap Android devices now and both gave me a problem, so I am going to go out on a limb and say I'm not the only one. In fact I lie, I know I'm not the only one it plagues. The problem I get is that I don't get a data signal, I can make and receive calls and send and receive messages, It's just the data. Does this sound familiar to you? I searched high and low, through pages and pages of various language forums. So I've written this post to bring all my hours of searching together. The problem originates with my network. I'm in the UK and on Vodafone. They seem to be the only carrier in the UK that block the IMEI's that aren't the normal numbers, for example my UK devices all start with 35, but my Chinese devices start with 86. That's the problem.
There is 2 parts to my fix but you might not have to do both. Start with the first and see how you get on.
Fix 1
Go to settings > more... > Mobile Networks > then select the APN you are using, scroll down to the bottom and select Authentication, then select none. Make sure you save the APN. It might take effect pretty much immediately, but probably best to reboot.
Fix 2
This is a little harder but not to bad. Start by downloading an app from the market called Mobile Uncle. Once installed select IMEI backup. This will help if you incase you want/need to restore it.
Next select Engineer Mode > Engineer Mode (MTK) > scroll right to connectivity > CDS Information > Radio Information > Phone 1.
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Click on the 'AT+' box to pull up the keyboard. Delete the + and it will show you some options click on 'AT+EGMR=1,7" ".
(I don't know how you choose your new IMEI, I never go that far into looking. I just chose a number from a device I don't use)
Type your new IMEI in between the speech marks and press SEND AT COMMAND. Wait a moment for confirmation then reboot your phone. If you want to need/want to do this for sim 2 then do the same process except when you select AT+, select AT+EGMR=1,10" " instead.
Fingers crossed your problems should be solved.

Fix the APNs signals and data

For some reason there is two APNs in the phone..that's way the signal and data be Corrupt .
the answer with this small apk .Offline SIM APN Database.
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link
https://play.google.com/store/apps/...t#?t=W251bGwsMSwyLDEsImNvbS5TSU1BUE5DaGVjayJd
fix
1-install and open
2-hit on look for apns sitting for your sim , another menu will pop to pick you apns
3- hit any one thats will pop another menu with sitting (you can apply it or GO TO ANDROID APPS SITTINGS)
AND HERE IS THE CATCH.
hit it thats when you see two apns sittings
go to the first one and apply the default or what you add
then go to second one and apply the default again .or what you
thats will fix the apns in the phone and the signal and data stays on all the time
i try this in t mobile us
hope this work for others
Ok I'm having these same issues with my data but quite frankly i don't understand your instructions :-\
Sent from my One S using Tapatalk 2
WiiR0cKz said:
Ok I'm having these same issues with my data but quite frankly i don't understand your instructions :-\
Sent from my One S using Tapatalk 2
Click to expand...
Click to collapse
Agreed but do you mean that data won't sleep after this?
I understand the instructions: effectively you use the suggested app to access the apn settings of your phone. it shows that there is two different apn settings, and by setting them both to default will fix the data connection problems.
I tried this, however it has had no effect on my phone. tested extensively as I am in hospital just now and haven't been off my phone.
Vodafone UK, HTC one S S4, rooted with stock 4.0.4 android.
Easiest/quickest fix I've found is to change connection type to GSM only, then back to CDMA once the phone signal resets. bloody annoying though, surprised that there isn't a fix for this yet.

Can't connect to network suddenly and emergency calls only

Today i went on business trip and while on plane i put airplane mode on. Upon landing i couldn't connect to network anymore, it gives me 2 errors depending if i manually select network or try automatically, those 2 are Unable to connect. Try later and Error while searching for network.
I reset network settings, restarted phone, reset it, tried different sim in my phone and it didnt work either, mine did in other phone. I dont known what to do besides wait to go home and give it to service since its under wattany... any ideas please?
N_L said:
Today i went on business trip and while on plane i put airplane mode on. Upon landing i couldn't connect to network anymore, it gives me 2 errors depending if i manually select network or try automatically, those 2 are Unable to connect. Try later and Error while searching for network.
I reset network settings, restarted phone, reset it, tried different sim in my phone and it didnt work either, mine did in other phone. I dont known what to do besides wait to go home and give it to service since its under wattany... any ideas please?
Click to expand...
Click to collapse
is your phone rooted or did you install a custom rom/kernel on it?
All stock
I get bars but cant get on network. Carrier back home said i seem connected and reset it but it's not card issue as i tested for that...
Maybe this can help
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I can also open and browse carrier sim app but cant receive resulting messages from stuff there or make a call...weird stuff
N_L said:
I can also open and browse carrier sim app but cant receive resulting messages from stuff there or make a call...weird stuff
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You didn't say but have you tried a reboot?
At least20 times, wiped cache too
Came home and network works... I'm still taking it to service but don't know how they'll or I can test it. Other sim produced same error abroad so it's not that...
Edit:
Bit of an update:
I called my warranty place they said phone is from Italy which now made sense but that it should work. I ran imei check and it says blacklisted. I bought it new unsealed with warranty from official place so now I'm gonna need a new phone, right?
It is the bug of Samsung. I am having the same problem all the time on both S8+ and S7Edge. Iphone 6 is fine. Typical answer form Samsung is 'network or sim' related. O2 is saying problem with your phone. When I choose network manually everything is working. As a fix you can turn 4g off when roaming

Data drops during calls

Hey guys, I have a SM-N986U1... Stock no root. I'm having a problem where my data drops out as soon as I make or receive a call, until I end it. Any solutions?
radici said:
Hey guys, I have a SM-N986U1... Stock no root. I'm having a problem where my data drops out as soon as I make or receive a call, until I end it. Any solutions?
Click to expand...
Click to collapse
Enable VoLTE if not yet.
Clear system cache
Network reset
Clear sim card toolkit data
See if those get it...
tribalfs said:
Enable VoLTE if not yet.
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Click to collapse
Option doesn't seem to be available... At least, I don't see it in settings or drop down menu.
blackhawk said:
Clear system cache
Network reset
Clear sim card toolkit data
See if those get it...
Click to expand...
Click to collapse
Thanks... Giving that a try.
EDIT: didn't work. Guess I will try a backup and do a full wipe. If that fails, I'll go to the Authorized Samsung Repair place here and see if it is a hardware issue.
radici said:
Option doesn't seem to be available... At least, I don't see it in settings or drop down menu.
Click to expand...
Click to collapse
Volte ,has to be enabled by your sim service provider !
That said, obviously your service provider ,must support this feature . ?
I had to phone my service provider and request them to enable Volte ( in my sim card settings ).
Take into account that if you have a branded firmware on your device ,that the firmware has to support Volte .
I had issues in the past ) with Volte been "disabled " /not working ,
( Service provider issues/mistakes )
I then had to contact my service provider and request then again to check my sim settings and re enable Volte again .
Bottom line ,
Service Provider "controls "the enabling etc of Volte ..!(sim card )
So yes , with Volte enabled ,my data connection does not drop when receiving voice calls
( otherwise it should drop )
good luck .
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Question Software Update disappeared

Unlocked variant from Samsung. I had a Software Update setting section. Soon after putting my Verizon SIM in the device the setting isn't there anymore.
Not sure how to fix or get the setting back. I can't check for new updates either
I have an unlocked variant (SM-F711U1) running a Verizon SIM and software updates option is right in the main settings menu
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If you can't find it there, try going to Settings; About Phone; then on the bottom you should see "looking for something else?" And software update under it. Check the pic I've attached
This is all I have
Sorry for the late reply, but to me it almost seems like your phone didn't quite set itself to Verizon's configuration when you put your Verizon SIM card in. It's almost like it has no configuration for updating software PERIOD. This is very strange as even the unlocked version, while brand new, with no SIM ever put in should still show some form of a software update option when connected to internet.
The two suggestions I have are 1)
Use Google dialer set to default and dial code *#*#3747#*#* that will take you to a menu with three options and you want to tap on the "phone information" option and there will be a massive amount of information about your phones network configuration in there including stating that it is actively running on the Verizon network and successfully has the carrier provisioning info. (Disclaimer: I suggest not getting curious and manually changing settings in there when you don't know what you're doing because you can disable network bands and really end up having to factory reset your whole phone if you don't fully comprehend what you're changing) I'm just suggesting that you look visually to make sure of what I said above is what you see.
2nd)
If nothing else, pop your sim card out and go to settings, general management, reset and then tap the reset network info option and let your phone reset it's whole network configuration. If it doesn't reboot itself after then manually power the phone down, while powered down reinsert your Verizon SIM card and then power back up and give it a few minutes to get itself reconnected to Verizon's Network and after about 10 minutes I would reboot the phone again and see if anything has changed.
Spoiler: Also check this in about, status information, SIM status
You should see what you see in my picture when you click the spoiler link.

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