Lenovo s850 no signal n no service network - General Questions and Answers

Hallo everbody...
I has problem with my lenovo device...
I flash a new rom s850 row s207, when i insert my sim card my phone detect the sim card but still no service n my signal keep searching...
I try chance the modem but still same problem..
I have invalid emei but i restore back the emei number.
can anybody help me...
Sorry for the bad english...

lenova s850 no service
ME to same problem my hand set wroking fine with network but some time its going hang then i formate with sp tolls i did't take nvram backup . after i restore my imei but now my phone no service and say only oprater name like (no servive /idea).
i restore aslo same phone nv backup with sp tolls nv write sucess not still same no service
my nv address starat 0*180000 end 0*50000 Mtk 6582(model lenova s850)
Any suggestion plz

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i have a permanent solution for Lenovo s850 no service problem
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Meshah said:
Hallo everbody...
I has problem with my lenovo device...
I flash a new rom s850 row s207, when i insert my sim card my phone detect the sim card but still no service n my signal keep searching...
I try chance the modem but still same problem..
I have invalid emei but i restore back the emei number.
can anybody help me...
Sorry for the bad english...
Click to expand...
Click to collapse
Have you checked all of your network settings?
Have you tried searching to find if there is a secret dialer menu to control your radio settings?
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE

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[Q] Invalid IMEI after factory reset?

Guys,
I have used many custom ROMs on A110,
But one day while I was running Cynus T2 ROM, my battery got discharged fully, I plugged into a wall charger but nothing happened even after hours of charging,
Then I searched on forums and flashed my phone by SPflasher , the flashing was successful but my IMEI got invalid, luckily i had nandroid backup
Now the problem is whenever I factory reset my IMEI gets invalid
So please help me.
mohsin.jmi said:
Guys,
I have used many custom ROMs on A110,
But one day while I was running Cynus T2 ROM, my battery got discharged fully, I plugged into a wall charger but nothing happened even after hours of charging,
Then I searched on forums and flashed my phone by SPflasher , the flashing was successful but my IMEI got invalid, luckily i had nandroid backup
Now the problem is whenever I factory reset my IMEI gets invalid
So please help me.
Click to expand...
Click to collapse
Restore your phone by getting in to CWM recovery. It should get back your IMEI data back. And then, once you can see both of your sim slots working, take a backup (NANDROID or just IMEI). You can use MobileUncle Tool to backup your working valid IMEI. Save and keep this file handy with you for future.
no success
rajenpurohit said:
Restore your phone by getting in to CWM recovery. It should get back your IMEI data back. And then, once you can see both of your sim slots working, take a backup (NANDROID or just IMEI). You can use MobileUncle Tool to backup your working valid IMEI. Save and keep this file handy with you for future.
Click to expand...
Click to collapse
even i get the same issue but now 1 more issue comes up .....
MOBILEUNCLE TOOLS WONT INSTALL AND I DIDNT TAKE A BACKUP >>>>>>
WHAT DO I DO NOW BRO ??????
invalid imei after reseting the phone
Sir ,please help me in getting back my imei data. When I reset my phone, it appears invalid imei and none of my sim is working . So plx help me
hasnain.kazmi said:
Sir ,please help me in getting back my imei data. When I reset my phone, it appears invalid imei and none of my sim is working . So plx help me
Click to expand...
Click to collapse
through eng mode u can solve the problem u just search in google

[Q] IMEI loss, Radio state also showing Off, pls Help

Hi,
Yesterday afer root of my mmx magnus a117, I tried to install recovery with help of TWRP manager but after that I face issue of my network signal, this is due to loss IMEI, so I tried to slove this issue with help of mobileunkle tool to go in engineer mode to feed IMEI no but its not working, as it show my Radio state off.
My phone SIM managment is also got inactive ( greyed out ).
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lenovo s850 invalid imei & SN

This problem raised When I flashed my lenovo s850 with custom rom when the flashing is done it worked but when I inserted my sims it showed me invalid imei then I typed *#06# it showed me invalid imei, ihav googled it & fixed my WiFi nvram error & successful with imei.zip method and pasted my imei numbers but same problem arises that no service when I inserted my sim & serial number also gone, it is showing sn:0000000, I have even showed in lenovo service center but they said it will take up to 20-30 days to return from factory.. Any suggestions to solve my problem?
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[Completed] Help On Fixing Hauwei Honor (Hol-T00) imei null

My Holly T00 imei goes blank and i have tried many method of recovering, this all to end up to nothing, i noticed this when i flash recovery to my phone with rashr and i think i think maybe the recovery is wrong or its not compatible with phone, The phone is booting fine but the imei is null and cant read the simcard, It shows "insert sim card" whenever i boot the phone, ave flashed different recovery so as to solve the prob, i tried to rewrite the imei with "Mobile uncle tools" "chamelephon" it those apps could not change the imei., i even have my imei backup.., i load the imei backup with "Mobile Uncle Tools" it installed successful but when i reboot the phone,, it is still null, :crying:
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Youngstallion said:
My Holly T00 imei goes blank and i have tried many method of recovering, this all to end up to nothing, i noticed this when i flash recovery to my phone with rashr and i think i think maybe the recovery is wrong or its not compatible with phone, The phone is booting fine but the imei is null and cant read the simcard, It shows "insert sim card" whenever i boot the phone, ave flashed different recovery so as to solve the prob, i tried to rewrite the imei with "Mobile uncle tools" "chamelephon" it those apps could not change the imei., i even have my imei backup.., i load the imei backup with "Mobile Uncle Tools" it installed successful but when i reboot the phone,, it is still null, :crying:
The worst part is that i could not find the phone stock rom online, i have searched tired, The only rom i see is for Hol-U19 and my mobile phone is Hol-T00,
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Please help Me out!
Click to expand...
Click to collapse
Greetings and welcome to assist. Unfortunately I can not find any firmware for your device on xda, I'm pretty sure flashing the wrong recovery has affected your partition table. If you try asking here
https://forum.xda-developers.com/android/help
hopefully someone will upload the firmware for you
Good Luck
Sawdoctor

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