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[Q] Emergency calls only, switching to Aeroplane mode does not fix it

Hello,
I've had this issue since day one: my phone randomly loses signal, usually after not using my phone for a couple of hours. In contrast to multiple other threads posted here, however, turning Aeroplane mode on and off does _not_ fix the issue. The only thing that will get me back on the network is a complete reboot. Needless to say, the issue is extremely annoying.
I've tried flashing various roms, and eventually switched back to stock, but the issue persists. Can this be a carrier problem or an issue with my sim? Or is the phone to blame? I really wouldn't want to go through the hassle of getting a replacement...
Any help would be appreciated!

In short, the phone is to blame IMO. Personally I think its an issue with the QFE1100 Qualcomm chip. Then again, what do I know - lol. Just an opinion.
So many other threads on this issue - both here and on the google product forums but still no resolution or acknowledgement of a problem from Google.
Some folks will say flash the 4.4 radio but YMMV. The only known workaround at this point is to change from 'LTE Preferred' to '3G'. This should keep you connected to the mobile network.
http://productforums.google.com/forum/#!starred/nexus/7s7DsI4DUYo
or,
http://productforums.google.com/forum/#!starred/nexus/eOToYgJXdrw

Thanks for your reply!
I forgot to mention though that I tried this setting as well with no effect, it's still happening with the mode set to 3G :/

Welcome to the club
**Team Nexus 5 battery is crap**

It couldn't hurt to check to see if your imei number got blocked by your carrier. Verify this with your carrier first.

i don't see how my imei could be blocked with my phone working fine 99.9% of the time. i did, however, request an update for my (pretty ancient) sim card earlier today, and considering trading my sim for a new one if that doesn't help.
then of course there's still the option to replace my nexus 5 as a last resort. not giving up yet

i don't want to jinx it, but since replacing my sim last week i haven't had any (complete) loss of signal

Nexus 5 - No service....help please

Ok this is a weird one.
Phone was working ok yesterday throughout the day. In the evening I noticed I had no signal so I rebooted the phone but still nothing.
Checked my operators (O2) website and it said there was a fault with my local mast. Ok I thought...should be ok tomorrow.
Woke up in the morning, still no signal. Mast still showing a fault. So I travelled to work 6 miles away, but still nothing. My local mast in now working again, as is the one near my work, but still can't get any service.
Factory reset to no avail. Tried another sim card of a friends in my phone but still nothing. If I try to search operators it brings back the usual UK list, but if I try to register on the network I get 'Currently unavailable. Please try again later' (or words to that affect).
Im starting to think it's the radio in my phone. It's just strange that it coincided with the fault on my local mast.
I also have the issue that I slightly cracked my screen about 2 month ago, so now I apparently have voided the warranty on the phone despite it being less than 6 months old.
Anyone have any suggestions? Or is my phone screwed?
N.B. I should probably add that I am on OTA Android 5.0, have been for a few weeks now....and my sim card works ok in another phone.

BurnCK said:
Anyone have any suggestions? Or is my phone screwed?
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Click to collapse
Have you tried reflashing a radio .img using fastboot while in the bootloader? Or maybe the cell tower is still having issues.
BurnCK said:
I also have the issue that I slightly cracked my screen about 2 month ago, so now I apparently have voided the warranty on the phone despite it being less than 6 months old.
Click to expand...
Click to collapse
The warranty doesn't cover non-manufacturing defects. I don't think they'll replace it under warranty if its physical damage/wear and tear that didn't occur during the manufacturing process.
Also, Google's "policy" of a one-time replacement of a cracked screen for US customers is NOT part of any sort of warranty, more of a "why not since we have so many spares from people RMAing because of silly things like speaker hole size, light bleed and loose power buttons". Google has the right to refuse if they don't feel like it regarding this "policy".

Do I have to have rooted to reflash the radio ?
The mast isn't having issues anymore according to my operator, but I'm in a different location now anyway so am on a different mast.
Unfortunately I'm in the UK so don't qualify for the cracked screen replacement as I looked at that option when I first did it.
Does the fact that I can see the list of mobile networks in settings mean I don't have a hardware fault with the radio / modem?

1 more thing I have just noticed. I was going to check my IMEI to see if it was somehow blocked. However, when I go into Settings > About Phone > Status, the IMEI shows as 0.
When I dial *#06# the IMEI also shows as 0.
I'm guessing that's not right and it's the reason I can't connect to any network ?

BurnCK said:
Do I have to have rooted to reflash the radio ?
Click to expand...
Click to collapse
Only an unlocked bootloader.
BurnCK said:
1 more thing I have just noticed. I was going to check my IMEI to see if it was somehow blocked. However, when I go into Settings > About Phone > Status, the IMEI shows as 0.
When I dial *#06# the IMEI also shows as 0.
I'm guessing that's not right and it's the reason I can't connect to any network ?
Click to expand...
Click to collapse
That's probably your issue.
Flash a radio and cache.img from factory images.
If that doesn't work and you don't have an EFS backup then there's not much you can do.

Lethargy said:
Only an unlocked bootloader.
That's probably your issue.
Flash a radio and cache.img from factory images.
If that doesn't work and you don't have an EFS backup then there's not much you can do.
Click to expand...
Click to collapse
Thanks. Not sure how my phone can just lose it's IMEI. Especially as I haven't rooted / unlocked bootloader, etc.

BurnCK said:
Thanks. Not sure how my phone can just lose it's IMEI. Especially as I haven't rooted / unlocked bootloader, etc.
Click to expand...
Click to collapse
It's happened a couple times to people, mostly with cache derps. Either that, or they restored an EFS backup from a device with a different IMEI (which damages it permanently unless you had an EFS backup of the intended IMEI), flashed something not meant for their device, or something else that damages it.

I have a similar problem. No service, sort of stuck in airplane mode. Radio is off and I can't turn it on. It all started after I upgraded to 5.1.
I've tried downgrading to 4.4.4, cm11, flashed different radios etc... I do see IMEI though but my radio is unresponsive. When I manually try to save APN settings nothing happens, they don't get saved.

TdotNex said:
I have a similar problem. No service, sort of stuck in airplane mode. Radio is off and I can't turn it on. It all started after I upgraded to 5.1.
I've tried downgrading to 4.4.4, cm11, flashed different radios etc... I do see IMEI though but my radio is unresponsive. When I manually try to save APN settings nothing happens, they don't get saved.
Click to expand...
Click to collapse
I had the same issue as the OP - a tower was down in my area, and even after it was restored my phone got stuck with no mobile date service (although the odd thing is, voice and texts worked fine, just not mobile internet).
A factory reset was the only thing that fixed it.

AT&T H950 update and recovery problems

It's an H950 from the $250 ebay deal. I am on ATT service and the phone worked fine at H95010d
I contacted ATT customer service and had them pushed OTA software update to me. The first agent pushed H95011x to me, and things went wrong since then.
The phone cannot read the sim card (but no missing sim notice), baseband shown as unknown, if I press the "status" under the "about phone" page, the screen will flash black then go back to the about phone page.
Then I tried a factory reset. The phone started normal as if everything was fine, it just works on the first boot after the reset. But once I restart the phone, it went back to the same situation as above. I tried many times and the whole process is highly repeatable.
After that, I contacted ATT again, had the H95011z pushed to me, and it did not change the problem. Replacing sim card does not help, either.
Then I tried to get to those recovery methods on the forum, including installing the LGE mobile device drivers. But then under download mode, the phone (LGE Android MTP device) is shown as "this device cannot start (code 10)". Thus I was not able to perform fix with the tools.
I am kinds of stuck in the middle. Any help and/or suggestions would be appreciated. Thanks!

neeviour said:
It's an H950 from the $250 ebay deal. I am on ATT service and the phone worked fine at H95010d
I contacted ATT customer service and had them pushed OTA software update to me. The first agent pushed H95011x to me, and things went wrong since then.
The phone cannot read the sim card (but no missing sim notice), baseband shown as unknown, if I press the "status" under the "about phone" page, the screen will flash black then go back to the about phone page.
Then I tried a factory reset. The phone started normal as if everything was fine, it just works on the first boot after the reset. But once I restart the phone, it went back to the same situation as above. I tried many times and the whole process is highly repeatable.
After that, I contacted ATT again, had the H95011z pushed to me, and it did not change the problem. Replacing sim card does not help, either.
Then I tried to get to those recovery methods on the forum, including installing the LGE mobile device drivers. But then under download mode, the phone (LGE Android MTP device) is shown as "this device cannot start (code 10)". Thus I was not able to perform fix with the tools.
I am kinds of stuck in the middle. Any help and/or suggestions would be appreciated. Thanks!
Click to expand...
Click to collapse
I am having exactly the same problem. I also replaced the SIM card, but instead of trying the 11z version I tried the rooted 11x version without any change.
As you wrote, a factory reset will restore the ability to make calls until the first reboot. For data, there is no APN listed. Manually inputing the APN info will cause data to work perfectly, but all APN data is lost/missing again on reboot.

icherub said:
I am having exactly the same problem. I also replaced the SIM card, but instead of trying the 11z version I tried the rooted 11x version without any change.
As you wrote, a factory reset will restore the ability to make calls until the first reboot. For data, there is no APN listed. Manually inputing the APN info will cause data to work perfectly, but all APN data is lost/missing again on reboot.
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Click to collapse
I've sent the phone back for an exchange, and the new one is coming tomorrow. Just noticed your reply.
So there is no fix for this? Or is there a problem with the ATT OTA update we should be aware of?

neeviour said:
I've sent the phone back for an exchange, and the new one is coming tomorrow. Just noticed your reply.
So there is no fix for this? Or is there a problem with the ATT OTA update we should be aware of?
Click to expand...
Click to collapse
This may not be a widespread issue, so there might've been an issue particularly with your Flex (maybe corrupt file?). I've used 11x/z without encountering this.

Ace42 said:
This may not be a widespread issue, so there might've been an issue particularly with your Flex (maybe corrupt file?). I've used 11x/z without encountering this.
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Click to collapse
Feels nervous when finding others had the same issue.
Just want to make sure if there's anything i should know of before dealing with the new unit coming tomorrow.

quick report:
Received the exchange. Seems new as the last one but does not contain the ATT sim as the last one did.
Tried update with date changing, for like 20 times no luck. Chatted ATT service to push the two updates (11x and 11z) in, one after another. Gone through the process without problem, and seems working fine now.
So, it may be device dependent or case specific. Thank you for your input.

I also had to send mine back. It's sitting on my front step now. The strange thing is that the email telling me the phone was being sent back only listed a speaker problem, which I did not have and never mentioned. We'll see.

neeviour said:
quick report:
Received the exchange. Seems new as the last one but does not contain the ATT sim as the last one did.
Tried update with date changing, for like 20 times no luck. Chatted ATT service to push the two updates (11x and 11z) in, one after another. Gone through the process without problem, and seems working fine now.
So, it may be device dependent or case specific. Thank you for your input.
Click to expand...
Click to collapse
Are you an AT&T customer? I can not get the update to come OTA, whether with an ATT valid SIM or a different SIM. I also tried calling and because I have a business ATT line, I got business support and the lady was clueless about pushing the update to my phone from her end.

hamzer11 said:
Are you an AT&T customer? I can not get the update to come OTA, whether with an ATT valid SIM or a different SIM. I also tried calling and because I have a business ATT line, I got business support and the lady was clueless about pushing the update to my phone from her end.
Click to expand...
Click to collapse
What time of day are you calling? I found calling during east coast business hours got me the right people. Ask the agent if they can do a google search from their computer, when/if they say yes ask them to search for H95011x or H95011z. The first or second result should be the AT&T page that explains the update, once my rep had that info things went MUCH better. (I just noticed for me the first result is my post on this forum LOL)

I got my Flex 2 back and LG did nothing to fix it. The repair said "fixed speaker". I never said anything about a speaker. After a couple frustrated calls I had to send it a second time. The second time, it was returned "no problem found". The phone is unusable as it can only be used after a reset and before a reboot or power off. More fun with LG later today. Ultimately, though, the reps don't give a crap; I couldn't even get the last rep to increase shipping speed, even though they failed to repair it the first time.

SM-G970U Refuses to Work on Carrier Network

So, I have an S10e (SM-G970U) that was bought from Verizon a while back. The phone was set up on a Verizon post-paid plan, but was later switched to prepaid. The phone worked fine for months, but about a week ago, the phone randomly stopped making and receiving calls, texts, and the ability to use mobile data. It was taken to Verizon, and they tried "all they could" in their words, which included a new SIM card, resetting network settings, and eventually a factory reset from settings. Nothing seemed to work, and they gave up, claiming it "seemed like a bad antenna." They did call their "tech support" who claimed the most recent Android 11 update supposedly caused an issue with mobile network connection with the Verizon S10e devices, which I haven't heard of, but didn't know. He claimed a reset would fix it.
Since none of that fixed it, it was taken to a shop to be inspected. They claim the phone has nothing wrong with it. So, that, in theory, rules hardware issues out. Their only claim was that when an AT&T SIM was inserted, it was able to connect to the network, but never tried to make any calls due to the SIM not being activated. I assume this is due to someone trying to "help" inserting an activated AT&T SIM into the slot when testing, which I assume ended up installing the carrier branded version of the firmware. They gave a couple possible reasons, but neither seemed to make sense.
Since it had the AT&T bloatware and was working with only AT&T SIMs, I decided to flash both the VZW G970U firmware (the earliest version I could to ensure the supposed "issue" from Verizon support wasn't a problem) and the G970U1 firmware. Both firmware flashes have seemed to have done nothing, as the phone is still having the issue. Most times, it will connect to the Verizon network, but the signal seems to rise and fall quickly (like the bars going from 5 to 1 to 3).. Still no calls, texts, or data, though. I have no idea what's going on, at this point, honestly. Any ideas?

Hardware problem

iBowToAndroid said:
Hardware problem
Click to expand...
Click to collapse
LanGar21 said:
Since none of that fixed it, it was taken to a shop to be inspected. They claim the phone has nothing wrong with it. So, that, in theory, rules hardware issues out.
Click to expand...
Click to collapse
If the people it was taken to were competent and did their jobs correctly (one of the best around, according to reviews and carrier recommendation), their diagnostic results show no hardware damage to the phone. Then again, their explanation for the problem was that it had been locked to ATT network (a Verizon bought phone that never had any affiliation with another carrier, aside from Verizon and a month-long stint with Straight Talk). Some idiot she knows that used to work for a Verizon retailer popped his ATT SIM in there, and it flashed ATT firmware.. Their POSSIBLE solution was to try and have it network unlocked from ATT. As we know, though, the IMEI obviously did not change, and the process of confirming the identifier is done on the mobile network level. Therefore, flashing a different carrier's firmware won't do much (permanently), aside from changing the boot screen and bloatware apps. We even tried to explain to the guy that the ATT SIM had never been popped in until after the problem began, as there was no reason to beforehand. I also mentioned I had flashed firmware multiple times before I ever came to him, to no avail. I should've pushed harder, but I had been out all day, frustrated and ready to go home.
It's been over a month since that issue began, and I haven't thought much of it lately.. We've since found her a new phone (and stowed the other one in a drawer). Those guys did blurt some moronic statements.. In hindsight, I'm not too sure I should trust their judgement after hearing what I did. Maybe it was an antenna issue or otherwise hardware, but I sort of assumed if anyone can happen to keep a repair shop open, they'd at least be able to complete the simple tasks fairly easy. I don't know. I'm not paying another repair shop to find out, though.

I had a very similar problem where my phone would just randomly lose all connection for about a minute, then it would reconnect I would start doing whatever I was and it would do it again and this one on for months. I took it to AT&t and they told me to replace the SIM which I did and it didn't work. after a couple updates it fixed itself.

Question ROG phone 5 not connecting to any SIM/network

Hi all - hoping I can get some help here with the following as I have no idea what to do after failing to find any solutions this far.
I got an ROG Phone 5 (base model) a while back from a well known online marketplace reseller (never again!) and only recently tried using it, but for some reason the phone does not recognise or connect to any network at all. I have attached a few screenshots of what I mean. I get the same thing regardless of whatever SIM I try.
The only possible thing I can think of now (and am dreading) is that it may be a blacklisted phone but no idea how to confirm this.
Any thoughts?
Thanks in advance!

Does the device have an IMEI? Check that (but don't post your IMEI here).

Yes it does have an IMEI number (two in fact)

this happened to me too. did you find the solution?

This may be because of a recent update.
Remove the sim card, and reset it to factory settings.
There was a recent update that has caused problems.
I have the 5s, and the Wi-Fi connection has not been working since the last update, a few weeks ago. Also, now there is problems with the cellular data connection.

oartalk said:
This may be because of a recent update.
Remove the sim card, and reset it to factory settings.
There was a recent update that has caused problems.
I have the 5s, and the Wi-Fi connection has not been working since the last update, a few weeks ago. Also, now there is problems with the cellular data connection.
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Click to collapse
have you solve this problem ? i got this problem too since updating