[Q] Nexus S suddenly lost connection to mobile network (can't call, text, use 3G) - Nexus S Q&A, Help & Troubleshooting

My phone suddenly stopped being able to send/receive texts or calls and can't connect to the 3G network -- doesn't seem to be a SIM card issue because when I popped the SIM into an old flip phone, I could call/text. At first the phone looked as if it had full signal and was connected to 3G, but it wouldn't connect when dialing out and couldn't load any websites. I've since reset it (first a factory reset -- still had the same problem, so I did a hard reset) and now I don't even see any signal on the phone. It would work for a few minutes if I turn it off and turn it back on, but then it would suddenly stop working after a few minutes. Has this ever happened to anyone? Does anyone have a solution? Thanks!

alignment said:
My phone suddenly stopped being able to send/receive texts or calls and can't connect to the 3G network -- doesn't seem to be a SIM card issue because when I popped the SIM into an old flip phone, I could call/text. At first the phone looked as if it had full signal and was connected to 3G, but it wouldn't connect when dialing out and couldn't load any websites. I've since reset it (first a factory reset -- still had the same problem, so I did a hard reset) and now I don't even see any signal on the phone. It would work for a few minutes if I turn it off and turn it back on, but then it would suddenly stop working after a few minutes. Has this ever happened to anyone? Does anyone have a solution? Thanks!
Click to expand...
Click to collapse
Try a new radio...
Sent from my Nexus S using xda premium

Setting.Out said:
Try a new radio...
Sent from my Nexus S using xda premium
Click to expand...
Click to collapse
How do I go about doing that? (and my wifi is working fine -- does that mean the radio is okay...?) Thanks!

alignment said:
How do I go about doing that? (and my wifi is working fine -- does that mean the radio is okay...?) Thanks!
Click to expand...
Click to collapse
Try calling using earphones, their metallic audio jack improve your connection and work as a antenna
Sent from my C6603 using xda premium

network loss in nexus 4
hi , have u resolved your issue because I'm facing the same problem !

check that your phone is showing that you have a baseband and imei number

Yeah, either flash a new radio, or your IMEI number got screwed up somehow and it isn't registering on the network. Let me know if you need links to the Radio forum.

I've got the same problem now, unknown baseband & imei. anyone know how to fix this ?

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.

Optimus 3D 3G troubles

Hello everyone,
I hope someone can help me because I am going crazy with my Optimus 3D My device constantly loses the 3G connection and so I don't get any notifications about new e-mails and Whatsapp messages. The icons for network strength turn white and even sometimes that happens with the wi-fi icon. I already tried rooting the device and installed a custom rom but I still have this problem. The problem mostly occurs in the office I work in as 3g and network reception is very low here. I see that the device switches between HSDPA, GPRS and 3G quite often and then most of the time loses the internet connection. It also does not reconnect when I walk around and get to an area with better reception. Sometimes switching to Airplane Mode and back helps, but this is not a very handy solution. I am really clueless where the problem could be. I am here in Frankfurt/German so normally there should be no problems with the network (I am on Vodafone). The only thing I could think of is my SIM card, because I had an iPhone 4 before and had to cut the card to the micro SIM size and now use it with an adapter. Could this be a problem? Also the app 3G reconnect did not solve this problem.
Has anybody a clue what might be wrong with my device? I am already thinking about getting a new phone
Cheers,
Andreas
Does it do that when goes to sleep?
Sent from my LG-P925 using xda app-developers app
lazylu said:
Does it do that when goes to sleep?
Sent from my LG-P925 using xda app-developers app
Click to expand...
Click to collapse
I don't know when it loses the connection, could probably happen when it turns the screen off or switches between network speeds (3G, GPRS, HSDPA). It really is a problem for me that it does not get the connection automatically back. Currently it shows almost full network reception, the "G" icon with both arrows underneath (only the left arrow pointing up turns green from time to time), but it has no internet connection. I sent me a mail to my google account via my office PC haƶf an hour ago, but still no message on the phone, that there is new mail
Just try a new simcard... my guess is that it will solve your problem.. could be worth the couple euros ..
Sent from my LG-P920 using xda app-developers app
I had similar Problems with O2 in Bremen.
That happens if the phone loses the 3g(h+) signal, turning of the data connection, and let that reconnect is enough, no need to turn on airplane mode than.
Try flashing the newest baseband version, and try the prometheus rom + kernel. I still notice that the same problem happens, but it reconnects again after losing it now, and i rarely notice it that way.
Maybe you could tell us your android version, and baseband version.
http://forum.xda-developers.com/showthread.php?t=1186406
I had a similar problem when I used GB roms without upgrading my baseband.
Sent from my LG-P920 using xda app-developers app
Hi everyone,
thanks a lot for your answers. I have the newest firmware on it V21E and baseband is L6260_MODEM_SIC_01.1042.00. Problem is that it does not automatically reconnect when it loses the internet connection. I had this problem again the whole day. When I left the office for lunch it did not reconnect, so again I did not get the newest e-mails. Probably I will really try another SIM card with a different network provider. I never had this issue with my iPhone... Thanks a lot for the advices, hopefully something will work. Otherwise I need to get a new phone :/
Cheers,
Andreas
For me the 3g data service goes as it likes but to reconnect i have to restart the my phone. Tried many roms as well as kernels and finally using acura 3d Max 3.1 with titan kernel solved the problem. It doesn't give up 3g connection but if i switch to edge and back to hsdpa again i have to restart. Barry also lasts and have overclocked to 1.2 ghz
In the Dailer APP dial *#*#4636#*#* Phone info Scroll Down just above the turn off radio button Change from WCDMA Preferred to WCDMA only
Good morning (at least here in Germany it is morning *g*),
got me a new SIM card with a new provider yesterday evening and so far it seems to work fine in the office. I hope it stays like this, then the problem would be solved *phew* Thanks a lot for all your help!
Cheers,
Andreas

[Q] Can't make or receive calls

Started a couple days ago, using straight talk AT&T sim on my nexus 5, Data and text messages work fine, but whenever I try and make a phone call the signal drops completely and calls won't connect. People been telling me when they try to call it goes straight to voicemail. I'm running stock rom. Any suggestions? Straight talk and Google both with no help.
Have you tried a different sim card from like a friends phone to make sure its not the phone itself? You can also try to call ATT to see if its on their end.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Swapped sims with my wife. Mine worked on her phone hers didn't on mine. Think it might be a hardware issue on my phone and I got it on Craigslist so I think I'm screwed
Sounds like it definitely is a hardware issue now or something with the Sim tray. Sorry to break it to ya. Hopefully you can work something out with the guy on Craigslist.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Thanks. I have had the phone for about 4 months with no issues. I K of its not the sim tray because I still get data and texts and I can receive calls sometimes if I have dull reception somewhere. It just started all of a sudden, pretty frustrating
I just the same issue today as you. It was a ROM issue. I was on PA. I switched to aokp for now.
Sent from my Nexus 5 using XDA Premium 4 mobile app
backside floaters said:
Started a couple days ago, using straight talk AT&T sim on my nexus 5, Data and text messages work fine, but whenever I try and make a phone call the signal drops completely and calls won't connect. People been telling me when they try to call it goes straight to voicemail. I'm running stock rom. Any suggestions? Straight talk and Google both with no help.
Click to expand...
Click to collapse
I had this issue on the stock, unrooted ROM after about 4 months as well. I think the cache partition was corrupted. You can try wiping this in recovery and see if the problem fixes itself.
I didn't think of just wiping the cache, so instead I did a factory reset by unlocking the bootloader and everything cleared up.
Now I wipe the cache partition roughly once a month and the phone runs like a champ. Also I use sdmaid to clear the device from junk that accumulates over time.
Sent from my Nexus 5 using Tapatalk
_jordan_ said:
I had this issue on the stock, unrooted ROM after about 4 months as well. I think the cache partition was corrupted. You can try wiping this in recovery and see if the problem fixes itself.
I didn't think of just wiping the cache, so instead I did a factory reset by unlocking the bootloader and everything cleared up.
Now I wipe the cache partition roughly once a month and the phone runs like a champ. Also I use sdmaid to clear the device from junk that accumulates over time.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Thanks for the help, but I already did a factory reset with no success. Data works fine on LTE but if ibtryvswitching to 3g or 2g signal drops as well. If I have full signal it will connect but anything in less it doesn't connect the calls.
Flash factory images then.
Sent from my Nexus 5 using Tapatalk
This happened to me on my non rooted N5 with 4.4.4. Disabling Wifi and/or LTE sometimes allowed a single SMS to get through, but then the problem resumed.
I fixed it by booting into recovery and wiping the cache partition. For some reason that took a long time (about 5 minutes) but eventually it finished and when I rebooted it was all good.
I'd try the wiping the cache and reflashing the radio.
I had a similar issue first week of owning the phone any time I sent a text I lost service until I rebooted.
From what I've read some N5's don't like the 4.4.4 radios. Mine likes 4.4.4 but couldn't pick up a signal if it had a 50ft antenna with 4.4.3 radio.
Sent from my Nexus 5 using XDA Free mobile app
Nexus 5 Not making or receiving calls
backside floaters said:
Started a couple days ago, using straight talk AT&T sim on my nexus 5, Data and text messages work fine, but whenever I try and make a phone call the signal drops completely and calls won't connect. People been telling me when they try to call it goes straight to voicemail. I'm running stock rom. Any suggestions? Straight talk and Google both with no help.
Click to expand...
Click to collapse
I just had this almost exact same scenario. I started having problems with signal dropping using CM12 nightlies (late April 2015) then eventually I switched over to a NET10 because T mobile was not cutting it to begin with. After the problem persisted on an ATT Sim card with NET10, I started flashing different ROMs. Signal seemed to be more stable and everything was fine for a while. After a few days I was no longer able to make or receive calls.
Eventually I did a complete factory image (still didn't work)
Flashed a 4.4 radio image (didn't work immediately, but the next morning it seems to be working as of now)
I probably could have skipped the hours of trouble shooting if I would have (found this thread first) and just tried flashing different radio images. Or maybe it was the series of other steps combined...not really sure.
Good luck and hopefully this helps the next person going through this mess. Oh and don't event waste your time calling NET10/Straighttalk customer service.
*EDIT* Above did not solve my problem, I actually had to fix the physical radio connections which came loose.
same problem
Hey guys having the exact same issue. Dropped my phone hard and then all of a sudden I cannot make or receive ant calls with my carrier dialer. I can send and receive texts, use LTE data , Wi-Fi. When I place a call, it is silent for about 10 seconds then drops the call. When people call it is silent for 15 seconds, then voicemail.
Called google, said it is out of warranty and LG would have to repair it for $150 just to see the phone.
Have done a cache wipe and factory reset. Is this most likely a hardware issue that I need to open the back for ? Little bit of a tech noob but can work my way around things. Any help is super appreciated as I love my N5 32G and don't have the money.
Same issue that I had, just remove the back and reattach/secure the radio wiring. It's on the left side and rubs parallel to the battery. It was a petty quick and easy fix.
Sent from my Nexus 5 using XDA Free mobile app
kgtgv4 said:
Same issue that I had, just remove the back and reattach/secure the radio wiring. It's on the left side and rubs parallel to the battery. It was a petty quick and easy fix.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
So I took the back off and looked at the cables and they were both connected. I took them off anyways and reconnected them. Didn't see anything surprising to my eyes at least. The only thing I did find out was that LTE is the only setting that I can't use data and texts on. 3G and 2G say no cellular network detected. Do I maybe need to replace the antenna cables ??
mac_attack10 said:
So I took the back off and looked at the cables and they were both connected. I took them off anyways and reconnected them. Didn't see anything surprising to my eyes at least. The only thing I did find out was that LTE is the only setting that I can't use data and texts on. 3G and 2G say no cellular network detected. Do I maybe need to replace the antenna cables ??
Click to expand...
Click to collapse
Hmmm. I don't think the cables would be bad. I would just make absolute sure that they are staying attached after you re-assemble your phone. I even put a small piece of tape over the end that I noticed was loose. If that doesn't work then I think we had different issues with the same symptoms.
I'm having this same issue. Three weeks now, unable to make or receive calls. SMS and data work fine. Wifi works. LTE works. When I switch to 3G or 2G there is no connection and T-Mobile doesn't appear in the list of networks. The SIM card works fine in another phone so it must be an issue with the device.
Tried everything on the software and settings side, flashed different ROMs, flashed different radios including stock. No change whatsoever. I completely disassembled and reassembled the phone. Nothing was loose or looked broken, all contacts seem to be making contact.
I do vaguely recall dropping the phone recently, so I guess that must have been it. The only other possible cause was that Google Play Services was auto-updated the day before I noticed the problem. Of course that is unlikely to be the cause but just mentioning it in case anyone else had this issue starting around Oct 23, 2015.
As much as I hate to do it, I guess I'll have to get a new phone. Just no other solution I can see unfortunately.
For anyone finding this posting through Google, currently there is no VoLTE (Voice over LTE) support in the Nexus 5 on T-Mobile. If that is available when you're reading this, then you might look into enabling VoLTE and seeing if you can make voice calls using that. Based on my reading it seems like VoLTE is a software update (perhaps requiring the provider to support the device as well), but the consensus seems to be that VoLTE on Nexus 5 on T-Mobile is unlikely to happen. But they support it on the Nexus 6, so maybe there is some way it can be done on the Nexus 5. Also Wifi Calling on T-Mobile is not available for the Nexus 5. The consensus there is that the stock Google/T-Mobile ROMs are unlikely to ever add Wifi Calling support for the Nexus 5, but perhaps CM 13 or Android Marshmallow do or will have Wifi Calling support built in, so there may be some possibility of getting Wifi Calling using those.
Did you try checking the cell antenna? That was my issue, I just tapped it back in place and my N5 has been fine ever since.
kgtgv4 said:
Did you try checking the cell antenna? That was my issue, I just tapped it back in place and my N5 has been fine ever since.
Click to expand...
Click to collapse
If you mean the ones with the long wires, then yes, I checked those. Actually I checked pretty much everything inside the phone. According to this excellent disassembly video: youtube dot com/watch?v=OPuCmfhzgbg , there are lots of antennas and antenna contacts. So many that he doesn't get to all of them until 20 minutes into the video. But still, I checked all of those and they looked ok. There must be some damage somewhere, just too small for me to spot. He also identifies "external test ports" for some of the antennas. I don't know how those are used or if they would be useful to debug this issue, but for anyone else experiencing this, you might try looking into those.
Help
backside floaters said:
Thanks. I have had the phone for about 4 months with no issues. I K of its not the sim tray because I still get data and texts and I can receive calls sometimes if I have dull reception somewhere. It just started all of a sudden, pretty frustrating
Click to expand...
Click to collapse
I'm having the same problem on my Nexus 6 and don't know what PA is and how to change it

[Q] Mate7 4g data problem

Hi all,
I've had this great phone MT7-L09 (softare version L09V100R001C00B127) since last December. My problem is that every now and then the 4g cuts off for a period of ten seconds.
It does not matter how strong the signal is nor which or whatever app I'm using. It just loses network. First thing I did was to change the old sim card to a new one. Did not help.
I was in contact with the Huawei support and conclusion was to send phone to service. OK. It came back with the same problem altough they changed the circuit board...so obviously they though that this would solve the problem. I did not. After messing around with it, trying to find if someone else was suffering with the same problem, with no luck, I send it back to service. Now they said that there is nothing wrong with it, but the problem is still there.
I havent noticed anything cut offs using 3g. It's not a major thing but it would be nice to know if its a firmware or any other software related problem.
If I use Netflix or similar where the data keeps coming it works just fine or if I use the phone as Wi-Fi hotspot, no problems.
It just loses network connection using apps like play store, facebook, whatsapp, twitter, every browser ie. firefox, build in browser, chrome, to name a few.
Should I just keep using it as it is or keep sending it back to service until they fix this issue???
Thanks
jopomopo said:
Hi all,
I've had this great phone MT7-L09 (softare version L09V100R001C00B127) since last December. My problem is that every now and then the 4g cuts off for a period of ten seconds.
It does not matter how strong the signal is nor which or whatever app I'm using. It just loses network. First thing I did was to change the old sim card to a new one. Did not help.
I was in contact with the Huawei support and conclusion was to send phone to service. OK. It came back with the same problem altough they changed the circuit board...so obviously they though that this would solve the problem. I did not. After messing around with it, trying to find if someone else was suffering with the same problem, with no luck, I send it back to service. Now they said that there is nothing wrong with it, but the problem is still there.
I havent noticed anything cut offs using 3g. It's not a major thing but it would be nice to know if its a firmware or any other software related problem.
If I use Netflix or similar where the data keeps coming it works just fine or if I use the phone as Wi-Fi hotspot, no problems.
It just loses network connection using apps like play store, facebook, whatsapp, twitter, every browser ie. firefox, build in browser, chrome, to name a few.
Should I just keep using it as it is or keep sending it back to service until they fix this issue???
Thanks
Click to expand...
Click to collapse
Sorry...one stupid question: have you already tried keeping the phone completely stock (without any application and/or software or any kin dof personalisation) for a couple of week and see if the problem still exists?
It really seems to me a software problem. Very strange.
I had the same problem with my MT7-TL10 golden version. For a week or so, the network used to come and go. Then ultimately the sim was not recognized at all. I sent it to Huawei service center and they told me that the sim slot is broken and I had to pay for replacement of the board which I refused. I was sure that I didn't break it. Now I am using my phone with one sim only.
Sent from my HUAWEI MT7-TL10 using Tapatalk
tuddu said:
Sorry...one stupid question: have you already tried keeping the phone completely stock (without any application and/or software or any kin dof personalisation) for a couple of week and see if the problem still exists?
It really seems to me a software problem. Very strange.
Click to expand...
Click to collapse
Thanks for your reply,
I haven't used it only with stock apps for a week maybe a day, but first thing when it came back from service for the first time, I did not install any apps and it still lost the connection anyway...
mirchichamu said:
I had the same problem with my MT7-TL10 golden version. For a week or so, the network used to come and go. Then ultimately the sim was not recognized at all. I sent it to Huawei service center and they told me that the sim slot is broken and I had to pay for replacement of the board which I refused. I was sure that I didn't break it. Now I am using my phone with one sim only.
Sent from my HUAWEI MT7-TL10 using Tapatalk
Click to expand...
Click to collapse
I'm not sure, but isn't the sim card slot located on the circuit board??? If it is, it cannot be the problem, but I must try the second slot anyhow.
jopomopo said:
Hi all,
I've had this great phone MT7-L09 (softare version L09V100R001C00B127) since last December. My problem is that every now and then the 4g cuts off for a period of ten seconds.
It does not matter how strong the signal is nor which or whatever app I'm using. It just loses network. First thing I did was to change the old sim card to a new one. Did not help.
I was in contact with the Huawei support and conclusion was to send phone to service. OK. It came back with the same problem altough they changed the circuit board...so obviously they though that this would solve the problem. I did not. After messing around with it, trying to find if someone else was suffering with the same problem, with no luck, I send it back to service. Now they said that there is nothing wrong with it, but the problem is still there.
I havent noticed anything cut offs using 3g. It's not a major thing but it would be nice to know if its a firmware or any other software related problem.
If I use Netflix or similar where the data keeps coming it works just fine or if I use the phone as Wi-Fi hotspot, no problems.
It just loses network connection using apps like play store, facebook, whatsapp, twitter, every browser ie. firefox, build in browser, chrome, to name a few.
Should I just keep using it as it is or keep sending it back to service until they fix this issue???
Thanks
Click to expand...
Click to collapse
Man why everybody blames PHONE first??? like not trusting !
To fix this problem is to go to networks and u have to restore your apn to default it like refreshes then you can either just turn off data and then on and restart phone
Simona Simmy said:
Man why everybody blames PHONE first??? like not trusting !
To fix this problem is to go to networks and u have to restore your apn to default it like refreshes then you can either just turn off data and then on and restart phone
Click to expand...
Click to collapse
Did not work.
jopomopo said:
Did not work.
Click to expand...
Click to collapse
Reset/Restore phone (backup first)
Simona Simmy said:
Reset/Restore phone (backup first)
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Click to collapse
Does not work, same problem after a numerous resettings. If I may add, I've have couple of other phones of which this problem does not occur.
In same place and conditions these phones work just fine not losing the data connection. Sure, if 4g is not available they use 3g, but never ever will the connection break off.
jopomopo said:
Does not work, same problem after a numerous resettings. If I may add, I've have couple of other phones of which this problem does not occur.
In same place and conditions these phones work just fine not losing the data connection. Sure, if 4g is not available they use 3g, but never ever will the connection break off.
Click to expand...
Click to collapse
faulty 4G module tuner.. phone ... replacement needed...
change preferred network
Go to settings and -->mobile networks-->>preferred network and select "WCDMA only"..
It will fix your problem..
There is no such option in my phone settings, only the option to choose automatic 4g3g2g or automatic 3g2g or 2g, 3g only and 2g only. As previously stated no data loss nor connectivity issues using 3g. It's bit annoying sometimes when phone loses data connection altogether although signal is very strong. Just waiting lollipop upgrade if it'd solve the problem, I doubt it but...
network operator..
I think it's network problem..please contact your network operator..4g network have connection problem from some local area signal towers..so you just put other network company SIM card in your local area..(use 4g supported SIM only)
Thanks for your advice, but I don't think that it's SIM card problem because there is no problem what so ever using my other phone SGS5.
sorry
jopomopo said:
Thanks for your advice, but I don't think that it's SIM card problem because there is no problem what so ever using my other phone SGS5.
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Click to collapse
Hmmm. Sorry friend..I am helpless.. anyway continue your thread here..in Xda have brilliant members..they can help you..best of luck.
Thanks, I totally missed your comment...this is turning out to be quite a puzzle. I've noticed the less battery (<60%) I've have on the phone there seems to be nothing wrong with the 4g connection. ???
To answer to myself, I was too optimistic...nothing to do with battery. It's just so weird that phone works like a charm most of time and then suddenly not. I'm confused...
Now on the newest firmware lollipop 5.1 it fixed my lte problem
same issue
I bought mate 7 a couple of days ago and I keep losing the data connection. the network gets connected and lost again.
i did everything to fix it but no luck. changed sim, restored device, modified APN and no luck.
it keeps disconnecting seems that it is a problem with the phone itself as i have read the same issue on a couple of forums..
hope it is a software issue and get fixed soon as this is annoying.
In service they replaced my phone to a new one mostly because of this problem and I can say it did not help at all. Only upgrading to lollipop will fix the problem ( tested on beta) I'm on b145 now and it does that all the time. I guess it is carrier based problem not SIM nor hardware.

During Call issues

Hi everyone
The HM9 a rock device But
I have an issues during the call!!
The call get disconnected many time during call
I have tried to change the cellular type from 2G to 3G to 4G even to auto type but same results I'm getting
I have tried to restart the phone many times and even i have to pull out the sim card and insert it bu again Same results the phone kept disconnected like crazy ??
Please any help
Mines disconnected a few times during calls too.
Sent from my SM-T800 using Tapatalk
Please guy's anyone can help us
Are you using wifi+? I do and I wonder if its caused by automatic switching between wifi and network?
bonerp said:
Are you using wifi+? I do and I wonder if its caused by automatic switching between wifi and network?
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I'm wondering that myself. A family member has a P9 Lite and it also occasionally disconnects during calls. It has wifi+ enabled. Maybe it does more harm than good.
I'll turn it off and see if that stops it... I certainly don't have the issue when no wifi is available
Sent from my MHA-L29 using Tapatalk
Maybe try with carrier aggregation off.
bonerp said:
Are you using wifi+? I do and I wonder if its caused by automatic switching between wifi and network?
Click to expand...
Click to collapse
The call gets disconnected either I'm on WiFi or not
Same issue happened to my friend using same phone
The issue still exists please do I need to return back my phone or what should I do
gm007 said:
Maybe try with carrier aggregation off.
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Click to collapse
I have tried both options either its off or on
But same issue exists
You might just need a new sim. I had a dodgy ee sim I transferred from one phone but the new phone didn't like it and caused similar issues. I had to change it twice before it was OK.
Sent from my SM-T800 using Tapatalk

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