Cellular network connects only for a few seconds - General Questions and Answers

Hi, I have a unique problem on my nexus 5 running on CM 14.1... everything was working fine till last week but since last week, the cellular network (AT&T) connects only for a few moments when selected manually and then it disconnects. Did anyone face this problem? and Does anyone have a solution?

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Internet connection dropping out on wifi

I just received my Nexus 5 today. Got it all set up and I have noticed that the internet connection kind of drops off when I'm on Wifi. I have full bars, but there will be no data. Josh reported similar behavior in his review model on The Verge.
I can't tell if it's a wifi specific issue or not yet. I turned off the "save battery" option under wifi and it's still doing it. The phone will simply stop receiving data in any app. It's not my router. My other devices work fine. I am rooted and do have Adaway installed, but this doesn't affect my Moto X or Galaxy Note 3.
Is anyone else experiencing this issue?
greyhulk said:
I just received my Nexus 5 today. Got it all set up and I have noticed that the internet connection kind of drops off when I'm on Wifi. I have full bars, but there will be no data. Josh reported similar behavior in his review model on The Verge.
I can't tell if it's a wifi specific issue or not yet. I turned off the "save battery" option under wifi and it's still doing it. The phone will simply stop receiving data in any app. It's not my router. My other devices work fine. I am rooted and do have Adaway installed, but this doesn't affect my Moto X or Galaxy Note 3.
Is anyone else experiencing this issue?
Click to expand...
Click to collapse
I've been trying to look at current wireless issues and this one is a little new.
So far (No tethering on Sprint - problems with some T-Mo) and that it doesn't see 2.4Ghz channels past 11 and that it can't see some 5ghz channels either.
I can confirm I have this issue as well, I have got my N5 now for 2 days and the problem started yesterday. I have 2 broadband connection at home and cannot receive data on either router, It was working fine until yesterday when the problem started. I have restarted the device several times to no avail. Am not sure why this is happening , do I have to send this back anyone?
I would play around with the router settings if anything.
See if your router is doing 2.4 ghz or 5 ghz.
DO all possibilities before resorting to the exchange.
Oh god, the Nexus 4 had this problem also. Was something with the Qualcomm-drivers. My Nexus 5 picks up notifications much faster, but sometimes I notice a delay for a few minutes (2/3 minutes), with an app like WhatsApp - if it hasn't been in use for a while. With the Nexus 4, I sometimes received my notifications like 30-45 minutes later.
expertzero1 said:
I would play around with the router settings if anything.
See if your router is doing 2.4 ghz or 5 ghz.
DO all possibilities before resorting to the exchange.
Click to expand...
Click to collapse
My router is currently set to auto between 2.4 and 5ghz. Also I have had issues with phone being stuck on edge or sometimes just stuck on gprs and it happens mostly just when I need Internet access. Google is disappointing.
And am at work now and the wifi that was working okay yesterday has now stopped working ... I think this has to go back, such a shame.
I can confirm I have the same Wi-Fi dropping issues on my Nexus 5.
Yes, quite a few threads here describing this same problem. Hopefully a mod will join them soon. I too experience this issue. Someone noted Nexus 10 had that problem at launch which Google fixed shortly after with a software update. I noticed Google support forums also have this reported. Fingers crossed for a quick fix from Google!
Sent from my Nexus 5 using Tapatalk

[Q] Connection issues with Wifi and Mobile Network

So I've had my nexus 5 for a few weeks now and I have two connection issues, one with wifi and one with the T-Mobile network.
Wifi Issue: I can connect to wifi with no problems, but after a while the wifi just stops working. It is still connected and the signal strength is good but I can't load any web pages or download anything. This usually happens if I'm downloading a large file from the play store.
T-Mobile Network: I usually drive though a couple dead spots on my commute where I lose service which is unavoidable. The problem is once I return to an area I know I get service, the phone has not reconnected to the mobile network. A triangle shows up in the notification tray saying I don't have service and I have to either search for a network operator or reboot the phone to get a connection. This problem doesn't happen every single time I lose service, but enough to be very annoying.
If anyone has a solution or suggestions they would be greatly appreciated. FYI my nexus is completely stock (using ART), I haven't rooted or unlocked anything...yet.
Thanks for your help
I have very similar issues.
I am on stock, unrooted and can't get decent internet through my WiFi even though my nexus 7 and other phones don't have an issue.
It also seems to struggle over 3g. I am with 3
I was considering contacting Google to see if I can replace the phone. I bought mine in November.
Sent from my Nexus 7 using xda app-developers app

Network disconnects when connecting to wifi

Hi,
I'm on 4.4.3, stock ROM, no root. Whenever the ph connects to Wi-Fi the network disconnects and takes about to min to connect back. I saw this on 4.4.2 too and the same continues. Is this a known issue? Any ideas how to prevent this?
Thanks.
Sent from my Nexus 5 using Tapatalk

[Q] Issue with 3g

Hello, I'm using oneplus one A0001, I'm having problem with 3g connectivity, my device majority of the time doesn't connects to 3g, and if sometimes it connects, signals drops. My sim is fine, coz i checked it with other device.
Does anyone know about this problem. Any help will be appreciated.
Thanks.
karqasim said:
Hello, I'm using oneplus one A0001, I'm having problem with 3g connectivity, my device majority of the time doesn't connects to 3g, and if sometimes it connects, signals drops. My sim is fine, coz i checked it with other device.
Does anyone know about this problem. Any help will be appreciated.
Thanks.
Click to expand...
Click to collapse
I have the same issue!
I use CM12 nightly from 20/12/2014 with stock kernel.
I found that rebooting the phone will help but I also have WiFi drops so go figure
I'm having issues with stock rom 11 4.4.4

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.

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