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[Q] Cellular phone connection dead from one minute to the next

So...
I am running my phone rooted, but mostly stock (just some removals) with ROM 1.53.401.2 and he 0.15.3150S.19_10.31501S.06L baseband.
Its been perfoming fine ever since so I never bothered to upgrade to a custom ROM or the newer basebands.
Its an EU unbranded phone. As of tonight, with nothing special done to it it seems to have lost all cell reception. All I get is An x where the 5 bars are. Funnily, when I turn of my WiFi router and select wireless internet, I can get online and download data through the cellular inetnet connection. But not a single call or SMS will go out.
I have moved to like every location in my apartmant and outside and nowhere I can even get a single bar of reception or even a call through.
Does anyone have any idea WTH this could be, what could have caused it? Any ideas on where to prod and poke for a solution?

Mine did that for the first day after I put a non-stock ROM on it...hasn't done it since. I took the piece that covers the SIM card off and popped it back on. I don't know what causes it though.

psych0t1c said:
So...
I am running my phone rooted, but mostly stock (just some removals) with ROM 1.53.401.2 and he 0.15.3150S.19_10.31501S.06L baseband.
Its been perfoming fine ever since so I never bothered to upgrade to a custom ROM or the newer basebands.
Its an EU unbranded phone. As of tonight, with nothing special done to it it seems to have lost all cell reception. All I get is An x where the 5 bars are. Funnily, when I turn of my WiFi router and select wireless internet, I can get online and download data through the cellular inetnet connection. But not a single call or SMS will go out.
I have moved to like every location in my apartmant and outside and nowhere I can even get a single bar of reception or even a call through.
Does anyone have any idea WTH this could be, what could have caused it? Any ideas on where to prod and poke for a solution?
Click to expand...
Click to collapse
Try this
http://forum.xda-developers.com/showpost.php?p=26921246&postcount=102

NEXUS 5 cannot connect to network?!

Hello,
So my phone just lost cellular connection. No bars no nothing. When i put my sim to other phone everything works . So i want to know is there any way to test if my nexus 5 hardware is failing or is there any other bug/fix what can i do to get this work. My phone detects sim card, it detects services but says cannot connect to this network right now, try again later.
PLEASE HELP!

Acrodroid said:
Hello,
So my phone just lost cellular connection. No bars no nothing. When i put my sim to other phone everything works . So i want to know is there any way to test if my nexus 5 hardware is failing or is there any other bug/fix what can i do to get this work. My phone detects sim card, it detects services but says cannot connect to this network right now, try again later.
PLEASE HELP!
Click to expand...
Click to collapse
I am having the exact same issue. started today around noon. i performed a phone reset and the problem persists. i would love if someone could help us out!

Hey guys I'm having the same issue. I was on lollipop, flashed Kitkat factory image, same problem. Have deleted, wiped, etc everything I can do. Tried safe mode. Nothing works. Started around 10AM today. It was working fine before.

I'm having the same issue. Has anyone found a fix?

has anyone found a remedy for this?

Exact same problem!!
Any answers wud be much appreciated

There is a known problem with a zero-battery drain killing the radio - i suffered it myself. Does that match any of your experiences?

I too am experiencing this problem. My phone died the other day and when I turned it back on there was no cellular signal. I can use wifi & bluetooth fine.
edit. I was considering replacing the antenna wires, don't know if that'll even help though. How do I troubleshoot this?

All of you check this thread:
http://forum.xda-developers.com/google-nexus-5/help/nexus-5-radio-refuses-to-t2834540
If your N5 runs totally out of battery, something happens to kill the radio module. I searched everywhere for a week for a solution - there isn't one.

One Plus One unable to connect to wind network

Hey I have had my one plus one for a little under a year and after a 2 week road trip it has stopped being able to connect and detect the Wind home network. During this road trip I was on airplane mode for the full duration of the 2 weeks with the 05Q caulkin rom installed. Once I had reached my home town of ontario I had noticed that I could only connect to wind away on my opo. When scanning manually for the WIND home network it would appear with the simcard symbol beside it but when trying to connect it would state that it was unable to connect to the network. Although randomly throughout the day it would connect without warning until I rebooted my device where it would lose connection again. I then later updated my phone to the latest OTA which is cm12.1 hoping that the problem would be fixed but to no avail. At first it was the same issue where it would show the WIND network with the sim card symbol beside it but now I am not even able to see the WIND home network and can only able to see the Wind away network. I have tried changing my APNs and have tested my sim card on my sisters opo where it works perfectly fine. I have also done a factory reset and nothing has been able to fix the issue. I would like to fix this issue and anything would be of help.

JaddNC said:
Hey I have had my one plus one for a little under a year and after a 2 week road trip it has stopped being able to connect and detect the Wind home network. During this road trip I was on airplane mode for the full duration of the 2 weeks with the 05Q caulkin rom installed. Once I had reached my home town of ontario I had noticed that I could only connect to wind away on my opo. When scanning manually for the WIND home network it would appear with the simcard symbol beside it but when trying to connect it would state that it was unable to connect to the network. Although randomly throughout the day it would connect without warning until I rebooted my device where it would lose connection again. I then later updated my phone to the latest OTA which is cm12.1 hoping that the problem would be fixed but to no avail. At first it was the same issue where it would show the WIND network with the sim card symbol beside it but now I am not even able to see the WIND home network and can only able to see the Wind away network. I have tried changing my APNs and have tested my sim card on my sisters opo where it works perfectly fine. I have also done a factory reset and nothing has been able to fix the issue. I would like to fix this issue and anything would be of help.
Click to expand...
Click to collapse
I'm having the exact same issue bro, see my thread here: http://forum.xda-developers.com/oneplus-one/help/connect-to-home-network-stuck-roaming-t3197836
Unfortunately no one has replied yet.

limpexowns said:
I'm having the exact same issue bro, see my thread here: http://forum.xda-developers.com/oneplus-one/help/connect-to-home-network-stuck-roaming-t3197836
Unfortunately no one has replied yet.
Click to expand...
Click to collapse
Sorry to hear you are going through the same problem. If I learn how to solve this problem I will make sure to hit you up.

JaddNC said:
Sorry to hear you are going through the same problem. If I learn how to solve this problem I will make sure to hit you up.
Click to expand...
Click to collapse
Did you have any luck yet? Mine is still acting the same. I have been using my LG G2 for a while so I haven't really tried to solve the issue as I tried a lot previously as stated in my post.

Maybe you could post your solution here to help other members that may have the same problem ?

JaddNC said:
Sorry to hear you are going through the same problem. If I learn how to solve this problem I will make sure to hit you up.
Click to expand...
Click to collapse
Have found found a solution yet? I have the same problem. Sim card works perfect on OnePlus X, Nexus 4, but not on OnePlus One. I get connected to Wind Away, and I've tried just about every fix including entering in everything manually.

did anyone figure out a solution? im having this problem right now

Wow... sounds like I wrote this thread - aside from minor details this is EXACTLY the problem I am having. My vacation was also two weeks and the randomly connect during daytime but loses connection once restarts sound all too familiar. After Wind store clerk did sim swap, new error msg appears and said "your sim card does not allow connection to this network", so the problem actually got worse. Eventually I had to switch carrier (to Koodo and it works).
No, I have not fixed it yet.
But I'm contemplating to try manual selection of radio band (in the *#*#4636#*#* menu), because mine is showing EURO BAND and USA BANDas choices. Tho haven't made up my mind yet because that might do much more damage than good, based on some Google research so far... frustrating.

Galaxy S7 LTE problem's

Hello from Bulgaria.Some one have had a problem with 4g network.Samsung S7 when he was lte \ 3g \ 2g after 30-40 minutes , scope disappears and receives a missed call notification.The problem gone after restart the device and after 30-40 minutes is same situation.If a phone is an 3g\2g no problems.
Sorry for my bad english.

Same here
My cousin bought an S7 Edge, but it had the same problems as listed. She then proceeded to change the phone, yet the other S7 Edge had the same problem. What could be the solution to this problem, and what caused it?

I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.

Gachev said:
I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.
Click to expand...
Click to collapse
We changed two gold ones, awaiting for the third. Problem seems to be persistent.

Hi!
Go to settings and find your APN-settings. Remove IPv6 and save it. Then everything should work fine.

I'm having the same problem. I'm sitting beside my friend with his ip6s+ and he's not having trouble connecting with the lte. just saying that this might not be just a network problem.

I've read about multiple people, including me having this issue, for some the APN IPv4 switch seems to work, but not for everyone. So what is this? Is it related to the phone hardware or software? Or is it a network problem? And will it be fixed? As this is starting to irritate me a bit..

Many People in my country (indonesia) is having similar problem. The signal somehow stuck in 3g. Forcing it to use LTE only using the app "4G LTE Switch) makes the signal gone, emergency only mode. Only a reboot would bring 4g back.
However it only acts up when using one specific mobile provider (telkomsel). Switching to my second sim, also by the same provider, didnt help. But if I switched to another provider, the problem doesnt happen.

Widespread issue in Germany as well. It's carrier independent. Had to exchange one unit. The new S7 Edge I got works fine so far, but has a pink hue on the display. Samsung QA! -.-

Any solutions or updates?

Solved?!
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?

heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Havent got any updates here in my country.
Would u be so kind to upload the firmware using this method
here
and
here

heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Downloaded bulgarian firmware,, XXU1APC8 is the only one available. Tried to check for update, nothing yet to xxu1apch...
Update:
Emailed Indonesian Samsung Support, they came up with a temporary solution:
go to phone, dial *#9900#
select debug level disable/low
change to mid
wait for phone to reboot.
2 hours past no signal lost yet
update: 3rd hour signal gone again

hi,
has anyone found a solution for the problem above?
in my case I have really slow internet (mobile data) on 2,3 or 4G, it's like it freezes when I try to open a page
when I connect to 4G it maybe works for a second and then nothing else, it's like 2G, very slow (wifi works normal)
can it be hardware problem? I already cleared cache and reset the phone, but it's still the same..

At me the phone can not change back to 2G from LTE, if 3G network is unavailable.
If I use LTE/3G/2G option and somewhere is not 3G network I can't receive or make voice calls.
Phone only works with 3G/2G option in network mode.
But in this case I only can use edge if somewhere only 2G and 4G networks are available.
If I use LTE network, the phone doesn't receive incoming calls.

I bought my samsung s7 gold one month ago in Lebanon (Middle East). I faced exactly the same problem, I couldn't receive any phone calls. Went to the store and they told me to switch from LTE/4G to 3G. Now my phone is always on 3G and working ok so far. But I can't put it on 4G !!!

get new simcard will fixed problem

Hi, is there a solution to this?
got info that there is a patching from samsung for this issue but since i am using custom rom, i cannot confirm this.
anyone has any update?

Same problem! I'm from Mexico and i just bought my pink s7 Edge on sunday, i've been going everyday to the carrier store and yesterday they finally gave me another one but im having the same issue! I can't take it anymore i don't know what should I do Maybe all the pink ones have the same problem? They have already changed my SIM Card, i have tried with another one and it still happens

This sounds very similar to the LTE problem on the Nexus 6P I wonder if it is actually the same problem.

Note Pro 12.2 Update After Canceling Data Plan

I recently picked my note pro 12.2 back up after some time sitting unused. I finally got around to getting the flickering screen fixed and want to get back into using the tablet more often. The issue I'm having now is updating to a more recent firmware. I'm unable to even check if I have the most recent firmware because I don't have a Verizon data plan or SIM anymore (long time coming) and it doesn't seem to want to update without that connection. Does anyone have a way to go about updating the tablet manually?
Also, is there anyway that I can flash the Wifi firmware on to the tablet so it ignores the fact that I have the data connectivity and acts like a wifi model? I've rooted multiple phones in the past, and as long as I have a good set of instructions I can do quite a bit but I'm still looking for an answer to this question.
Thank you.

you can use samsung smartswitch for PC: http://www.samsung.com/us/support/owners/app/smart-switch
to get the latest firmware.
just note if you need root, the new versions of 5.1.1 are not yet rootable.
unfortunately this device has a locked bootloader so flashing a non Verizon firmware to get wifi only is not possible currently.
I have noticed if you have a sim card installed with no service (I have a Tmobile sim with no service currently) it drains the battery pretty bad as it keeps looking for service, connecting and then disconnecting.
I turned off mobile data in the settings which fixed that for me.

Thanks for the info. I'll take a look at updating it to the latest firmware. I don't need root, was going to do it if we could flash the wifi firmware.