Mobile networks drops out after android 7 upgrade - General Questions and Answers

Note 5. Android 6 to 7 update. It said an update was available so I did it. My mobile network drops out. Can't text. If I make a phone call it comes back up. I have done a factory reset since the update to attempt to fix it. I did not have this issue until doing this upgrade. I do have the stock 6.0 ROM. I'm almost to the point of loading it back in if I can't fix this. Also my 4g LTE signal is good even when it says cannot find mobile networks.

Johnnyiroc said:
Note 5. Android 6 to 7 update. It said an update was available so I did it. My mobile network drops out. Can't text. If I make a phone call it comes back up. I have done a factory reset since the update to attempt to fix it. I did not have this issue until doing this upgrade. I do have the stock 6.0 ROM. I'm almost to the point of loading it back in if I can't fix this. Also my 4g LTE signal is good even when it says cannot find mobile networks.
Click to expand...
Click to collapse
Have you made sure your Network Settings are correct?
So you have APN settings? Have you verified they are set correctly?
I DO NOT PROVIDE HELP IN PERSONAL MESSAGE, I DO NOT TAKE REQUESTS IN PERSONAL MESSAGE, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE

The APN can't be changed. It's shaded. I don't know how it could be wrong. I find it odd that placing a call makes everything work again.

Johnnyiroc said:
The APN can't be changed. It's shaded. I don't know how it could be wrong. I find it odd that placing a call makes everything work again.
Click to expand...
Click to collapse
Yeah, that's strange. You would probably have better luck looking around and also asking in the Note 5 forum for your device model.
Sent from my SM-S903VL using Tapatalk

Related

[Q] Network Dropping

I just want to check in and see if any other Inspire owners are having this issue:
I have noticed that my phone occasionally drops the network connection and doesn't get it back right away. There are two different flavors of this issue that I have experienced:
1) I was walking my dogs today and the phone suddenly dropped it's connection to AT&T completely. After a few seconds, it reconnected and everything was fine. I was in an area with good coverage and the status bar showed no connection at all.
2) When home, I leave the Wifi on. Earlier today, when I tried to make a call, it simply wouldn't dial out. Then I tried to open a web page and nothing (after turning wifi off). I had to switch airplane mode on and back off to reset the connection. I also received several text messages at once, all of which had been sent hours before (as indicated by the time stamp on the message). It's almost like the phone has an issue swapping back and forth between the carrier connection and the wifi.
Is anyone else experiencing anything like this?
As an update, I noticed that when the wifi is on, there's a check mark under the H+ symbol (rather than the up/down arrows) and when I switch off Wifi, it doesn't go away. During this time, I have no cellular data. Switching airplane mode off and on doesn't seem to work. Sometimes it recovers on its own. Other times, I have to turn the wifi off and on several times.
This is annoying. It seems to be having issues doing the hand-off between Wifi and cellular data. This is really the only issue I have with the phone. Hope they roll out a fix soon.
I had the same problem. I thought it was because I had to add my own APN. (I could not switch my plan around because it was a work SIM). This caused SMS messages to not go out and an overall bad network experience on the phone. I have since returned the phone because I need a reliable network connection and the ability to send/receive SMS messages at all times. Once a fix is found I will be back. I liked the phone alot otherwise.
Are you by any chance using the SIM from another phone? I had the exact same issue yesterday and data did not work for me until I called AT&T and had them update IMEI number from Captivate to Inspire. Hope that helps.
Sent from my Desire HD using XDA App
AnyMal said:
Are you by any chance using the SIM from another phone? I had the exact same issue yesterday and data did not work for me until I called AT&T and had them update IMEI number from Captivate to Inspire. Hope that helps.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
Nope. I made it a point to have them activate it in the AT&T store with a new sim because I had read about people having issues when they transfer their SIM. I also had and iPhone 4 previously, so transferring wasn't really an option. I'm definitely on the right data plan, too.
I left the wifi off all night and it did it to me again today. The check mark shows up under the H and it loses all data connectivity. I'm not sure what is causing this, but I'd love to know if there's some kind of workaround. I have messed with a few options (like the data always on option) and haven't had any luck.
AnyMal said:
Are you by any chance using the SIM from another phone? I had the exact same issue yesterday and data did not work for me until I called AT&T and had them update IMEI number from Captivate to Inspire. Hope that helps.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
I was using a SIM from another phone. It is the SIM card from my Work phone and I can not change the plan. It does have unlimited text and internet I just cant change it to a 4G plan. I had added the APN that is floating around here and that worked except I was having the same problem as the OP.
greyhulk said:
Nope. I made it a point to have them activate it in the AT&T store with a new sim because I had read about people having issues when they transfer their SIM. I also had and iPhone 4 previously, so transferring wasn't really an option. I'm definitely on the right data plan, too.
I left the wifi off all night and it did it to me again today. The check mark shows up under the H and it loses all data connectivity. I'm not sure what is causing this, but I'd love to know if there's some kind of workaround. I have messed with a few options (like the data always on option) and haven't had any luck.
Click to expand...
Click to collapse
It sounds like a replacement is in order.
stilger said:
I was using a SIM from another phone. It is the SIM card from my Work phone and I can not change the plan. It does have unlimited text and internet I just cant change it to a 4G plan. I had added the APN that is floating around here and that worked except I was having the same problem as the OP.
Click to expand...
Click to collapse
Like I said, my issue was very much like yours and OP's and adding cutom APN made no difference until I called AT&T and had them update IMEI on my account. Presto, all problems went away instantly. I understand that it's not an option for you, sorry
have you tried creating a new apn? try creating one using these settings.
mattbollenbach said:
have you tried creating a new apn? try creating one using these settings.
Click to expand...
Click to collapse
Just did this. Thought it might have resolved it at first, but it didn't. Basically, when I put the phone down for a while, it's like the data connection goes to sleep and doesn't wake up. When I turn the screen on, there's no mobile data. Sometimes, the dual arrows are visible under the "H", but only the up arrow is lit. Other times, the check mark (meaning no data) shows up under th "H" and stays there. Switching Airplane mode off and on will reset the connection.
I hate to say it, but the phone may have to go back. I love everything else about the phone, but this bug is too major to wait for an update or fix. What good is smartphone that doesn't get data reliably?
are you running the stock rom? i haven't been using that rom much so it may behave differently than the custom roms.
i don't think its a common bug. i would see if you can get a replacement phone.
mattbollenbach said:
are you running the stock rom? i haven't been using that rom much so it may behave differently than the custom roms.
i don't think its a common bug. i would see if you can get a replacement phone.
Click to expand...
Click to collapse
Definitely stock rom. No rooting or anything. I didn't notice this on the first day I had the phone because it was on Wifi almost all the time. I turned wifi off to test it and the issue persists. I suppose I should try resetting the phone first, though I'm not looking forward to setting it back up again. After that, I'll take it into AT&T. I'd love to keep the phone. Can't believe no one else is having this issue.
greyhulk said:
Definitely stock rom. No rooting or anything. I didn't notice this on the first day I had the phone because it was on Wifi almost all the time. I turned wifi off to test it and the issue persists. I suppose I should try resetting the phone first, though I'm not looking forward to setting it back up again. After that, I'll take it into AT&T. I'd love to keep the phone. Can't believe no one else is having this issue.
Click to expand...
Click to collapse
yeah, resetting it up is a pain. sorry, and i hope you get it fixed.
Just to say it again. I had the exact same problem as the OP. Maybe we both had a flaky phone?
Okay, turns out there's an issue with the AT&T tower closest to my house. I found out from a rep at AT&T. I haven't left home much at all this weekend, so I had no standard for comparison. I just verified it by turning the wifi off on my iPad and using 3G data. It has the same issue.
Of course, I had already done a factory reset and gone to the AT&T device support center, but at least my phone is fine.
As a side note: I love that Android restores your apps now. I always thought WebOS was awesome for doing that and that was what frustrated me most about Android, with as often as I swap phones.
Wow... Wish this was my problem. I switched back to my Palm Pre+ and my data works fine.

Q: I don't have data anymore

So I recently bought the girlfriend a Samsung Galaxy S 4g. Definitely a bit different than the Evo in terms of the overall process. It didn't help that I started out in the Vibrant forums somehow...
Anyway. As it stands right now I have her phone all rooted and it has CWM and I'm using the Valhalla ROM. The issue is that she doesn't have data.... and when I go into wireless networks and check out the mobile networks and such, I can never actually see T-Mobile. If I search I can see AT&T, which I connect to and I start roaming. If I do this I still don't actually have internet. I can't use the market, or the web browser or facebook or anything that requires data. The browser will sometimes redirect me to some web2go website, otherwise it just times out or says it can't connect to the server.
So does anybody know what's going on? Please let me know if you need any more details.
I've never had trouble like this between my Evo, or my Epic 4g Touch or any friends phones. I've also tried going back to 100% stock unrooted GB and I still have the exact same problem. The ROM doesn't seem to matter, neither does being rooted.
Since you are running Valhalla bring down the notification bar and make sure you have the data toggle on.
Yep, it's definitely toggled to on. I even cycle airplane mode and make sure it's on afterwards.
Only other thing I would suggest is a factory reset. The phone should be picking up the T-mobile network without any problems. But if rooted or not and on stock vs custom rom the issue remains you may just have to set it back to stock and send it in for replacement.
And I know this is a silly question but make sure you call T-mobile and verify that this line has data plan. It has happened in the past when I added a line that it wasn't provisioned correctly and out of the blue the data stopped working. The service was automatically removed due to a reps mistake.
Check your APN settings. Should be T-Mobile's, if not then that's what causing the issue. Just look up for those on google.
Sent from my SGS4G using xda forum app
My APN settings are correct. I've now tried several other APN settings though, and this hasn't helped.
I know this phone is on a data plan. It's on the $50.00 a month prepaid. It did work when we got it, and after it was rooted. I just noticed recently that it stopped working, and I'm not sure at what point it happened, and if it has anything to do with what I've done.
I called tmobile and they said they couldn't see any network related issues going on. Just my phone not connecting, so it was made a ticket for the engineers I guess haha. They are supposed to work on it, and they usually will either fix it and never contact you, or call you if they need you to do something.
Bump.
I've been in really good service areas with full bars T-Mobile and I still don't have internet. So I really don't know what's up. The "T-Mobile engineers" haven't called me back or fixed anything yet.
I'm about to bring myself back to stock and bring it in to a store.
Bring it back to stock & maybe put it in recovery mode & wipe caches & do factory reset again. See if that helps before returning it.
Sent from my SGH-T959V using XDA App
You might try reflashing the ROM or maybe just flash a different modem. I had issues like that once when i was on black ice. If you had data before, there probably isn't anything wrong with your phone.
Sent from my SGH-T959V using XDA App
Having the same Data problem
I had an unlocked ATT BB Curve on T-Mobile and the data was working (although very slow...)
I decided to try out a "Vibrant" hoping to be able to install ICS via Cyanablahblah.
Searching on Ebay I bought one only it turned out to be the 4G (it didn't realize there was a difference.)
Since then I can't get DATA on the 4G except in WiFi.
On the network it goes to the page: u.web2go.com and says my data plan does not work on this device.
Has anybody had any success with this problem ?
Could it be a 4G issue ? Before DATA came from Edge.
Have you checked what your APN settings should be with the magics of Google?
Theraze said:
Have you checked what your APN settings should be with the magics of Google?
Click to expand...
Click to collapse
I have, I've tried 3 different versions with no joy.
Update:
As per T-Mobile Tech,
Apparently Blackberry Data service does not work on non BB phones.
Needs Add on Data plan
bogiewan said:
I have, I've tried 3 different versions with no joy.
Click to expand...
Click to collapse
tmob probably caught on that you're using a "4G" phone and will try to force you to upgrade your plan.
FBis251 said:
tmob probably caught on that you're using a "4G" phone and will try to force you to upgrade your plan.
Click to expand...
Click to collapse
Is there any way to fool it with a 3G modem flash or something ?
I think I screwed up when I bought the phone not realizing there were 2 variants of the "Vibrant."
I wonder if I would have this problem with the earlier (non "V") 3g phone.
Probably. If it were just the 3G/4G causing the problem, you can force the SGS4G to only use 2G networks in the data settings... but if it's anything like the old Verizon bits with tethering and other data, they check for specific data strings that are harder to fake... I mean, set.
bogiewan said:
Is there any way to fool it with a 3G modem flash or something ?
Click to expand...
Click to collapse
They use your IMEI to tell what phone it is.
http://www.gsma.com/technicalprojects/fraud-security/imei-database
the OP was in 2011, so I'm pretty sure he already got it taken care of
mike-y said:
the OP was in 2011, so I'm pretty sure he already got it taken care of
Click to expand...
Click to collapse
... so I should have started a new thread instead of searching ?
bogiewan said:
... so I should have started a new thread instead of searching ?
Click to expand...
Click to collapse
No you shouldn't have. :good:

Nexus 5 32GB UK on 3 network

Just picked up my Nexus 5 and stuck my 3 sim card in it.
I have no internet unless I connect to my wifi. I've checked the APN settings and compared them to what the internet says they should be and found small minor differences so tried to edit it.
When I edited and selected Save, the APN disappeared. I then tried creating one but again when I pressed Save, it vanished.
Help!
chipxtreme said:
Just picked up my Nexus 5 and stuck my 3 sim card in it.
I have no internet unless I connect to my wifi. I've checked the APN settings and compared them to what the internet says they should be and found small minor differences so tried to edit it.
When I edited and selected Save, the APN disappeared. I then tried creating one but again when I pressed Save, it vanished.
Help!
Click to expand...
Click to collapse
Hi
I had a similar problem with mine. Did a full wipe of the phone and started
again from scratch and this has sorted the problem for me.
chipxtreme said:
Just picked up my Nexus 5 and stuck my 3 sim card in it.
I have no internet unless I connect to my wifi. I've checked the APN settings and compared them to what the internet says they should be and found small minor differences so tried to edit it.
When I edited and selected Save, the APN disappeared. I then tried creating one but again when I pressed Save, it vanished.
Help!
Click to expand...
Click to collapse
I'm on 3. Put my sim in, turned the phone on and it's been fine. I can do a screen shot of the apn settings if you like?
Unusual I guess, mine worked out the box. Let us know if the wipe works
Sent from my Nexus 5 using xda app-developers app
When I got it, I switched it on, unlocked bootloader and installed CWM. It didn't boot and for some reason wouldn't wipe through CWM so I downloaded the factory images and re-flashed the phone.
I then entered my details and got the no internet problem. I have done a wipe using the settings menu and now internet works
chipxtreme said:
Just picked up my Nexus 5 and stuck my 3 sim card in it.
I have no internet unless I connect to my wifi. I've checked the APN settings and compared them to what the internet says they should be and found small minor differences so tried to edit it.
When I edited and selected Save, the APN disappeared. I then tried creating one but again when I pressed Save, it vanished.
Help!
Click to expand...
Click to collapse
Hmmm... odd. I just took the 3sim from my SGS3 and put it in the N5 and it just worked.
Well spoke too soon, its not working again. Whenever I go into Mobile network settings, Network mode says Change the network operating mode and if I click it neither 2G, 3G or 4G is selected. Something strange going on.
Mine worked first time, whats your APN settings? if you post them i'll check them against mine
I've just been reading the TWRP thread and it would appear that a few people are having issues once they have installed that on their phone. I've tried re-flashing, wiping, but still not working. Might have to send it back
chipxtreme said:
I've just been reading the TWRP thread and it would appear that a few people are having issues once they have installed that on their phone. I've tried re-flashing, wiping, but still not working. Might have to send it back
Click to expand...
Click to collapse
You could be right. I originally had TWRP but I had a number of problems. I flashed CWM, did everything i needed to and once i was up and running I flashed TWRP back (the added functionality I do like). Since then its been okay. But yes, a number of formats.
Try having CWM?
Now back to stock recovery and tried re-flashing stock image and full wipe and still got no mobile data. Gutted but looks like its going back.
Just tried my o2 sim in which I only get 2G signal with in my house and it works on mobile data so appears to be only a problem connecting to 3G
I'm having the exact same problem..I'm on three too, sometimes I get 3G just for a couple of seconds, but then it vanishes? I don't think it's the phone though since I do get signal when outside the house. I think it has something to do with the signal booster I have?
Well there's a coincidence, I have a Home Signal Box too as get zero signal in my house without one. I do get full mobile phone signal just no internet. I'm sure its something to do with APN settings which do seem to be slightly different to recommended settings but can't change them as when I do the APN vanishes and it won't let me add any either.
chipxtreme said:
Well there's a coincidence, I have a Home Signal Box too as get zero signal in my house without one. I do get full mobile phone signal just no internet. I'm sure its something to do with APN settings which do seem to be slightly different to recommended settings but can't change them as when I do the APN vanishes and it won't let me add any either.
Click to expand...
Click to collapse
Same issue. On 3 with Home Signal Box. Data dies once I hop onto the box's connection.
I'm thinking to get a 3 sim on the one plan this weekend. How is the data speeds looking on the nexus 5. I just saw tesco is doing 4g which is reasonably cheaper than my current 02 even though it runs on their network but i must my 02 speeds are really terrible right now. Cheapest 02 4g deal is like 26 pound with 1gb data. Thats not even an option.
3 uk:
6mb/s hspa
12mb/s dc-hspa
14mb/s lte
-----------------------
Sent via tapatalk.
I do NOT reply to support queries over PM. Please keep support queries to the Q&A section, so that others may benefit
Thanks. I'm gonna sort it out over the weekend.
Sent from my Nexus 5 using xda app-developers app

So those of you having Sprint LTE issues, how are you handling it?

Just curious as to what others are doing to deal with this issue (discussed here: http://forum.xda-developers.com/showthread.php?p=47276465 ).
I just bought my N5 two days ago and, while I have an iPhone 5s to fall back on, it would be really nice to be able to use the phone that I just bought. I was thinking of setting up a Tasker profile or something to switch radios based on some factor or another. Maybe let it drop to 1xRTT when on WIFI (when I'm home or at work) and use LTE elsewhere (I like to stream music in my car with my phone - 1xRTT is no good for that ). I really just need a way to see when someone has attempted to call, so that I can call back. Oh well. Someone will figure something out.
So how about you? What are you doing to cope?
Using a different phone?
"Screw everyone who calls me, I need DATA" ?
"Sprint can suck it, I'm switching to [other carrier] because this is the phone I want." ?
Something else?
Hate to double post, but I thought people might like to know.
For whatever reason today I felt compelled to switch back to my N5 from my iPhone 5s. To do so on Sprint (apparently) requires a factory reset.
After factory resetting and reactivating my Nexus 5, it magically works the way it should. LTE when I need data, but I still get phone calls and texts like normal.
Unless Sprint literally fixed the problem overnight, I have no idea what happened.
So if you're having the tri-band LTE issue feel free to give this a shot. I'm located in Central PA, for what it's worth.
Sent from my Nexus 5 using Tapatalk
blackplague1347 said:
Hate to double post, but I thought people might like to know.
For whatever reason today I felt compelled to switch back to my N5 from my iPhone 5s. To do so on Sprint (apparently) requires a factory reset.
After factory resetting and reactivating my Nexus 5, it magically works the way it should. LTE when I need data, but I still get phone calls and texts like normal.
Unless Sprint literally fixed the problem overnight, I have no idea what happened.
So if you're having the tri-band LTE issue feel free to give this a shot. I'm located in Central PA, for what it's worth.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
it could have been an error in activation possibly causing the problem. a simple prl and profile update may have fixed the issue for you initially. if you didnt try that, that is.
No I'm in Hagerstown and lte just started working last night for me too. Now my problem is making phone calls. When I'm on Lte I can't make phone calls. I cant receive them just fine but wjen I try to call out it says call sent and immediately says call ended. Can u make calls on Lte?
Sent from my Nexus 5 using xda premium
chasew83 said:
it could have been an error in activation possibly causing the problem. a simple prl and profile update may have fixed the issue for you initially. if you didnt try that, that is.
Click to expand...
Click to collapse
I had tried the PRL and profile updates when I was trying to get it to work last night, as per some instructions that, I think, I found on Sprint's website.
musclehead84 said:
Can u make calls on Lte?
Click to expand...
Click to collapse
I hadn't checked until you asked, but yes, it's letting me make calls like normal.
Sent from my Nexus 5 using Tapatalk

Nexus 5 D820 not staying on network in Canada EFS problem??

Hello there,
I will try and explain this in the most detail I can.
I own a nexus 5 32gb phone, my wife owns a 16gb nexus 5. I was on prepaid service for the last 2 years with a company that did not offer LTE. I have switched to FIDO and they do have LTE. Her phone works great, texts send/recieve, mms, data all works as it should. My phone does not. it connects then shows LTE but cant do anything not even phone calls, sometimes a reboot works for a time other times not at all.
In comparing the 2 I realized I may have changed something long ago on mine and that is why it wont work right. If I go to the hidden settings page on both phones the difference I notice is that her phone shows ping google.com and mine shows ping google.co.uk.
For some reason I remember changing something that perhaps had to do with the radio way back to boost my service at the time. I have no idea how to change this back as the efs shows the uk ping. I assume this is why I cant have a proper working phone but maybe someone can work that out.
FYI, I have flashed every google version I could find and the same thing happens, tried flashing radios same thing. select USA band in hidden 4636 menu and it wont stay on data.
I am at a standstill now and need help. I hope this explains the problem and someone who knows can help me.
If I put my sim in wife phone it works as it should with no problems, I tired my sim in a phone at FIDO store and it works exactly like it should too so I know it is the phone.
I know the efs is specific for every device and there is no one size fits all for it, but is there a way to return it to true default? If not is there a way to rebuild it?
My phone at the moment is causing me grief I hope the community can figure this one out. I am willing to try anything at all, custom roms, efs wipe whatever makes this work
I have done wiping, roms etc before, it's been awhile but I am ok with doing any procedure you recommend
Thank you for your time, if you need more info, screenshots, etc let me know
data, signal, calls, sms wont stay on, loose signal all over
I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app
jd1639 said:
I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
APN is fine, same as hers. Actually not now since i changed to 3g. But in testing the LTE it was the same
I have reverted to 3G and data seems better, at least stable. Getting lots of service drops though and sms are delayed sometimes dont come at all
jd1639 said:
I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
FIXED! After 2 months of trying to figure this out it dawned on me. When prying the volume side of the back cover to fix my chargin port I must have inadvertently dislodged the black cable from the motherboard up top. upon first look it seems to be in place, upon further light inspection I could see it was not all the way on. Reconected it and BOOM full signal, full LTE and no other issues!!
I am so happy, lets party!

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