Lenovo A7000 Cellular Network not available - Lenovo A7000 Questions & Answers

Hi Guys i have a problem in my lenovo A7000 ,it was working fine but from few days i am not able to make any call because when i dial a number the network signal disappear and the "cellular Network Not found" Error pops out.i have searched for it but i am not able to find any solution.can any body know whats the solution for this Problem. i have installed a custom rom from here and with the base band update.my signal strength becomes strong but that problem is not letting me call .Thanks

mehtab237 said:
Hi Guys i have a problem in my lenovo A7000 ,it was working fine but from few days i am not able to make any call because when i dial a number the network signal disappear and the "cellular Network Not found" Error pops out.i have searched for it but i am not able to find any solution.can any body know whats the solution for this Problem. i have installed a custom rom from here and with the base band update.my signal strength becomes strong but that problem is not letting me call .Thanks
Click to expand...
Click to collapse
You can try and flash another ROM to see if it's the roms problem, or do another clean (by wiping system,dalvik-cache,cache and data ofcourse) install of your current ROM. :good:

Ray_Green said:
You can try and flash another ROM to see if it's the roms problem, or do another clean (by wiping system,dalvik-cache,cache and data ofcourse) install of your current ROM. :good:
Click to expand...
Click to collapse
when the problem occur i was using stock ROM the somebody suggested to use the custom ROM.i don't think the problem is in the ROM.

mehtab237 said:
when the problem occur i was using stock ROM the somebody suggested to use the custom ROM.i don't think the problem is in the ROM.
Click to expand...
Click to collapse
It could be the problem of your Sim network provider. Have you tested it out with other sim providers and see if you can place calls!?

Well in my case it somewhat worked with
*#*#4636#*#*
and then i select the GSM (PRL) and of the radio signal
now its working fine
now i want to know by switching of that radio signal will there be any other problem?

Related

KA: Dev. CM7 / MIUI Airplane bug ...

Dear Devs,
I was facing a problem related to Airplane Bug on Miui/CM7 roms, so i googled related to this but couldnot find anything of help. So thought of asking for your help..
1) Whenever i flash a stock or custom froyo/eclair/GB rom, it detects my network which is BSNL india without any problem
2) But when i flash any CM7 or ICS rom, my phone doesnot come out of Airplane mode at all..
3) So, i tried everything, but of no use.. IMEI is good ... nothing is corrupted
4) Yesterday, when i changed SIM card to other operators present in india, the airplane bug is gone
5) so i feel that problem is either with BSNL operator or may be with sim card as every other operators sim cards gets registered and there is no airplane bug there.. ( i tried Airtel/Docomo/Vodafone/Idea networks)
Is it do with RIL..
Kindly help me as this is same problem faced by so many people around globe with their operators..
High Rgds
yogeesharma said:
Dear Devs,
I was facing a problem related to Airplane Bug on Miui/CM7 roms, so i googled related to this but couldnot find anything of help. So thought of asking for your help..
1) Whenever i flash a stock or custom froyo/eclair/GB rom, it detects my network which is BSNL india without any problem
2) But when i flash any CM7 or ICS rom, my phone doesnot come out of Airplane mode at all..
3) So, i tried everything, but of no use.. IMEI is good ... nothing is corrupted
4) Yesterday, when i changed SIM card to other operators present in india, the airplane bug is gone
5) so i feel that problem is either with BSNL operator or may be with sim card as every other operators sim cards gets registered and there is no airplane bug there.. ( i tried Airtel/Docomo/Vodafone/Idea networks)
Is it do with RIL..
Kindly help me as this is same problem faced by so many people around globe with their operators..
High Rgds
Click to expand...
Click to collapse
Okay!!! So i'm not alone in this. I thought it was some other issue.
It's there with BSNL Network [ India ] . The radio doesn't turn on at all!. i flashed the JVT Modem as well ( Which works with samsung ROMs in the same network). The issue has been there since ICS Build 6/7 and MIUI also now. No networks showing. The radio is not turning on.
thank god!
I always thought it was my phone.
So it is an issue with BSNL.
please post a solution if there is any.
Thank you.
i had this problem with my phone a few times, i am living in turkey and i am with turkcell right now. i managed to solve it with a few steps:
1. turn on airplane mode from the settings page (not from the power menu). make sure you see the airplane logo in the status bar.
2. reboot to recovery and wipe cache only
3.when the phone boots up from recovery, turn off airplane mode from settings, and go to mobile networks page. select network operators. it will search for a while, go grab yourself a cup of coffee. after 5 minutes or so, wake up the phone and you will see the signal bars and phone is functional again!
u r not only who facing this problem ...
Hi .. i have same problem in BSNL .. while using CM/MIUI or CM based any rom ex: insanity rom .... even i m not able to solve airplane bug ... i searched a lot regarding this n read a lot .. there isnt any proper solution .. when i restart my phone sometimes No Service shows .. n that airplane mode still on ... i complained to Dev abt this ... and even about support for third party call recording software .. there is no solution yet .. ...
plz dev do something for issues ... we are huge fan of your rom ... and dont want to switch over any other rom ...
thanks ....
re-flashing same modem number of times do work some time..
pl you people and i also do trial and error to find best suited MIUI CM7 modem for India-BSNL
i was partially successful with jp5 here... Phone once detects network ... but on next boot... Network is gone again...
so...
flash different modems from recovery.. and if lucky enough.. can get network in 2nd or 3rd flash... ( you may also clear the cache)
please try different modems...
from this link... http://forum.xda-developers.com/showthread.php?t=1158783
lets post our findings here.. and find out best modem for INDIA
@all .... i m using MIUI ROM 1.11.25 has no problems from last month ... i got problem while i updated it .. then after there is no "No Service" problem ... try out guys ... it works like a charm .. i m using BSNL .. n dnt have problem ..
Are you subscribed to 3G services? It seems like the Samsung RIL implementation toggles to 2G mode quicker than Hacked RIL implementations that are on CM7 and MIUI which don't work so perfectly.
If you are not subscribed to 3G services, the phone would try to register on the 3G network upon Network Toggle or Airplane Toggle quite a while before actually switching to 2G. At this stage, you get the No Service bug which lasts quite long on CM7 or MIUI before getting back to 2G and getting a Network lock.
Have you tried using the 2G only mode and see if it gets better?
Unfortunately, RIL Implementations are properitary to Samsung and we won't be able to use them on AOSP based roms due to lack of source code.
solution
http://forum.xda-developers.com/showthread.php?p=21350908#post21350908
i tried this and it worked.
But i lost my lock-screen
will re-flash and try again

[Q] Network Fail (read a lot of forums, still no answer)

Hi guys
I own a Lg Optimus 2x P990 and I am currently running the JB CM10 Build by tonyp.
In the past I ran ICS builds like Django Manouche and other cm10 builds like Paranoid Android.
The cm10, builds are running very well on my device but there is a possible bug ... I use my phone during the day, and if I send, receive messages I usualy keep my connection with the mobile network.
When I wake up (phone is inactive for several houres) , and I just unlock my phone, the network bar is full, but I can't send or receive messages. When I go into Settings and try to search for a network I get " Error while searching for network ". A simple reboot can fix this problem.
If I don't use my phone often during the day, It does the same. I unlock after a few houres, statusbar Icon is full, but no network available... (so if someone tried to reach me by calling or texting, I can only see it after a reboot.)
The second thing is that I always have R above the network signal, even when I am not roaming at all ...
I tried to change my baseband when I was on Paranoid Android, but that didn't work ...
There is NO problem with my mobile network on the ICS build (like django manouche) , but the ROM isn't fast enough and I like stock android more ... ( I think)
I always did a full wipe, and followed the instructions ... I am on the latest Kowalski Kernel at the moment...
If I erase internal memery, could that do something?
Thanks for your time.
Arthur
?
That is strange. I am running cm 10.1 too and I have sometimes problems with logging in to operator after reboot. But your problem seems bigger. Did you tried to turn on/off mobile data (dont know how it's in english version)? And try to change to 2G/3G, maybe that might solve something. Or maybe there is an bug in new Bootloader (if you ran django mandouche and tonyp's), so if that doesnt help to you, try to downgrade to old BL
Reply
DeeKay773 said:
That is strange. I am running cm 10.1 too and I have sometimes problems with logging in to operator after reboot. But your problem seems bigger. Did you tried to turn on/off mobile data (dont know how it's in english version)? And try to change to 2G/3G, maybe that might solve something. Or maybe there is an bug in new Bootloader (if you ran django mandouche and tonyp's), so if that doesnt help to you, try to downgrade to old BL
Click to expand...
Click to collapse
Thanks for the reply ! My phone came with the old bootloader, and I installed Nova HD CM9 on it and had the same problem.
I need to try the 2g/3g settings...
When the error occures, I can try to turn data on/off all I want .. only a reboot helps ...
Django is on the new bootloader, and worked fine ... So I believe it's a CM problem... ?
I also dialed *#*#4636#*#* and changed to WCMDA Preferred (but didn't help)
Any more advice ?
APN - check it!
also.
try different base band.
try 30b
Reply
R0B3RTF1SH3R said:
APN - check it!
also.
try different base band.
try 30b
Click to expand...
Click to collapse
My apn seems fine ... altough here in Belgium we have a weird situation ... I am on operator B (telenet) wich uses the network (the infrastructure) of operator A (mobistar) ...
I'll try that baseband!
Thanks for the reply!
Reply
arthurderyckere said:
My apn seems fine ... altough here in Belgium we have a weird situation ... I am on operator B (telenet) wich uses the network (the infrastructure) of operator A (mobistar) ...
I'll try that baseband!
Thanks for the reply!
Click to expand...
Click to collapse
I tried to change the APN, or add a APN but when I try to save it, it's not in the list ...
So I changed back to default ...
testing
I just followed this guide .. I let you know If it worked for me ..
http://forum.xda-developers.com/showthread.php?t=2087215
Not working
arthurderyckere said:
I just followed this guide .. I let you know If it worked for me ..
http://forum.xda-developers.com/showthread.php?t=2087215
Click to expand...
Click to collapse
Still having this same problem over and over ... have to reboot my phone every morning ...
anyone ?
Thanks
I also have this problem, tried every possible combination of baseband and ril, still couldn't solve it.
Ended up returning to v30b ICS, where the problem doesn't occur.

Galaxy S advance signal loss problem

Hey I would like to ask you guys using ddulp8 jellybean indian firmware a question.
On gingerbread, this phone had a problem which caused it to lose signal randomly which was fixed by putting network in gsm mode only. this meant that i cannot use 3g.
Now on jellybean indian rom, do you still have that issue? when network is on auto mode, do you have problem with device losing signal or errors like "device not registered on network"?
subinmanaladil said:
Hey I would like to ask you guys using ddulp8 jellybean indian firmware a question.
On gingerbread, this phone had a problem which caused it to lose signal randomly which was fixed by putting network in gsm mode only. this meant that i cannot use 3g.
Now on jellybean indian rom, do you still have that issue? when network is on auto mode, do you have problem with device losing signal or errors like "device not registered on network"?
Click to expand...
Click to collapse
Nope. Everything works just fine with ddulp8. Btw that firmware is not for my country region but still it works just fine. Make sure you do factory reset after upgrading. If such problem persists, then it's a problem with your provider in my opinion.
subinmanaladil said:
Hey I would like to ask you guys using ddulp8 jellybean indian firmware a question.
On gingerbread, this phone had a problem which caused it to lose signal randomly which was fixed by putting network in gsm mode only. this meant that i cannot use 3g.
Now on jellybean indian rom, do you still have that issue? when network is on auto mode, do you have problem with device losing signal or errors like "device not registered on network"?
Click to expand...
Click to collapse
the reception issue is quite known for the device, it looses signals in calls and otherwise too often, there might not be any issue with the provider........

SM-g800F 3g and 4g problem

Hello,
My 3g and 4g are not working on my s5 mini (SM-G800F)
When i turn the netwerkmodus on LTE/WCDMA/GSM automatic i get Emergency calls only. When i turn the modus on only GSM(2g) i have signal back.
How can i fix this i run the stock android 5
Roan
roanbbb said:
Hello,
My 3g and 4g are not working on my s5 mini (SM-G800F)
When i turn the netwerkmodus on LTE/WCDMA/GSM automatic i get Emergency calls only. When i turn the modus on only GSM(2g) i have signal back.
How can i fix this i run the stock android 5
Roan
Click to expand...
Click to collapse
Hi everybody (and sorry in advance for my poor english) !
I am having exactly the same problem as the OP. To explain the situation in a nutshell:
I have the SM-G800F, for about a month. It worked fine, until I moved to the other end of France (it probably has nothing to do, though). Passing on the highway, "Emergency calls only" showed up while I was looking at my emails. The problem is that things never got back to normal.
The situation :
As I said, the same as the OP. When I turn on my phone or I go out of airplane mode, my phone tries to connect to 2G, then 4G / H+. The process takes a few seconds, then any indicator (left of network "bars") disappears, and I can't issue or receive calls, nor use data.
But if I force "2G only", everything works just fine.
I was using a rooted 5.1.1.. In the meantime, I tried several suggestions found here or elsewhere:
-Turn off the phone and on again : Nothing
-Enable / Disable flight mode: Nothing
-Remove / Replace the SIM card: Nothing
-Putting the sim in another phone: everything works just fine, so the problem may not be a faulty sim card
-Wipe Data / Cache Data then use Odin to reinstall a stock 5.1.1 rom (I'm really a noob to find the right words, sorry in advance, but my phone says, under the "version number" field , LMY47X .G800FXXU1BPC4 and the ROM I used is named : -G800FXXU1AOG2_G800FOXX1AOG1_G800FXXU1AOG2_HOME.tar.md5 filename
Manual carrier selection : Nothing
-Turn on Data Roaming : Nothing
-Checker my APN : Everything seems just fine
I can't tell for sure but I do not think it is related to my home. My problem began on the road and took the rest of the trip (2h/3h), and even around in the city, it remains. Moreover, my backup phone and the other people on the same network as me (Orange) don't encounter this problem.
So, I'm a little bit confused and a bit worried because of Knox (0x1: /). If you have opinions, advice, guidance, thank you very much in advance!
Joël
roanbbb said:
Hello,
My 3g and 4g are not working on my s5 mini (SM-G800F)
When i turn the netwerkmodus on LTE/WCDMA/GSM automatic i get Emergency calls only. When i turn the modus on only GSM(2g) i have signal back.
How can i fix this i run the stock android 5
Roan
Click to expand...
Click to collapse
figure anything out? just had this happen to me as well.
civicsr2cool said:
figure anything out? just had this happen to me as well.
Click to expand...
Click to collapse
No, I really don't know what the problem is I think it's something in the phone itself
I've got the same problem too
Did you find the cause of this issue in the end?
adamh22 said:
Did you find the cause of this issue in the end?
Click to expand...
Click to collapse
Hi !
Not yet ... I have another phone now but i still try now and then to fix my S5 mini.
So far, nothing worked. Some tech guy told me it was a common issue with that phone's antenna. Also read that from several forums.
Still, i read that some users were able to fix similar looking issues by flashing the modem file with Odin. I'm a bit n00b but i guess i'll give it a try.
Any success on your side ?
You can try searching for your carrier manually and choosing it.
Mrdream94 said:
You can try searching for your carrier manually and choosing it.
Click to expand...
Click to collapse
Thanks, but i already tried that many many times. My S5 Mini just displays "Network XXX unavailable" (or its nearest equivalent in French)
Did any of you manage to fix that by flashing your modem file with Odin ?
I've tried additional stuff but nothing seems to work. Back to stock Marshmallow. Still loosing radio signal whenever I enable 3/4G.
Maybe the bottomline is "hardware failure" but who knows...
Thx everyone!
seelebrn said:
Thanks, but i already tried that many many times. My S5 Mini just displays "Network XXX unavailable" (or its nearest equivalent in French)
Did any of you manage to fix that by flashing your modem file with Odin ?
I've tried additional stuff but nothing seems to work. Back to stock Marshmallow. Still loosing radio signal whenever I enable 3/4G.
Maybe the bottomline is "hardware failure" but who knows...
Thx everyone!
Click to expand...
Click to collapse
Have you tried a deep reset? If it does not works, try a custom ROM...
Hi !
Thanks for your reply,
I did try "Factory Reset" and "Wipe Cache" while in the Recovery Menu (Home+Power+Vol Up if I remember well). Is that what you were refering to ?
But I think I didn't try flashing a custom rom. Could you recommend one ?
seelebrn said:
Hi !
Thanks for your reply,
I did try "Factory Reset" and "Wipe Cache" while in the Recovery Menu (Home+Power+Vol Up if I remember well). Is that what you were refering to ?
But I think I didn't try flashing a custom rom. Could you recommend one ?
Click to expand...
Click to collapse
Yes I was meaning this. For a custom ROM i can recommend One of the latest with NOUGAT like Lineage OS 14.1
Mrdream94 said:
Yes I was meaning this. For a custom ROM i can recommend One of the latest with NOUGAT like Lineage OS 14.1
Click to expand...
Click to collapse
I'll give this a try and keep you updated, thanks !
Mrdream94 said:
Yes I was meaning this. For a custom ROM i can recommend One of the latest with NOUGAT like Lineage OS 14.1
Click to expand...
Click to collapse
Hi,
I installed Lineage OS 14.1, it's great but the same problem keeps happening. Everything works just fine in 2G, but whenever I enable 3G or 4G, my phone looses radio siglal and switches to "Emergency calls only" after a few seconds.
Any other thoughts ?
Thx !
As a side question, would you think of any way to rule out/confirm the possibility of HW failure ?
Thanks again !
Did anyone found solution for this?
Hi,
I've got the same problem. Tried to flash with Lineage 13.0, then 14.1 and still the same problem.
Anyone help?
Flash the last modem/baseband, did yoy try *#*#4636#*#* ? You can manually select wcdma only(3g) or lte only(4g) (sorry for my bad english)
still not working
When I choose 3G/2G auto connect from 1 line ti go to 4 signal.. so no LTE /4G for now..

GSM network and Signal

I cant solve my problem with loosing GSM network signal, i must restart my phone two times to be able to use my phone ,use network for internet and calls.
Everyday I have this problem,sometimes two times at day.
I try IMEI repair,cause I sow when I loose network signal,I also use IMEI to. Didn't help.
I try installing through ODIN new BL+CP and that also didn't help,the problem is stay.
I dont know what to do anymore,it's annoying when you loose network when you working something and you need a phone to use it for something to call someone online or just use viber or other stuff that you need network.
No one here also didn't help me and dont have idea have to solve this.
I have RR remix 6.2.1 Rom and Magisk root.
tze_vitamin said:
I cant solve my problem with loosing GSM network signal, i must restart my phone two times to be able to use my phone ,use network for internet and calls.
Everyday I have this problem,sometimes two times at day.
I try IMEI repair,cause I sow when I loose network signal,I also use IMEI to. Didn't help.
I try installing through ODIN new BL+CP and that also didn't help,the problem is stay.
I dont know what to do anymore,it's annoying when you loose network when you working something and you need a phone to use it for something to call someone online or just use viber or other stuff that you need network.
No one here also didn't help me and dont have idea have to solve this.
I have RR remix 6.2.1 Rom and Magisk root.
Click to expand...
Click to collapse
I have the same problem
I do everything nothing can't solve

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