Android Tutorials

How to fix No Service on an MTK Android phone while in WCDMA or 3G only mode

mediatek no service wcdma only mode

At some point or the other, your Android phone (and you) will have to leave the network reception stronghold and venture  into an area of not so encouraging signal reception. In my previous guide on boosting the Internet connection speed on your Mediatek Android phone, I explained a life-saving technique that tells your  MTK phone;

3G or 4G = Give me, EDGE or 2G = Keep it

See the guide at if you missed it. In today’s tutorial, we shall be putting yet another device issue behind us, the problem of no service or reception when network mode is switched to WDCMA (3G) only.

Could you shed more light on this particular issue?

This problem borders around you being in an area with 3G coverage and having signal when your phone is set to 3G / 2G. The problem here is that when you set the phone to 3G / 2G, you get the slow 2G reception most of the time and switching to 3G only gives you no reception.

How do I change my preferred network type (between 3G and 2G)?

There are 2 methods:

  1. Settings Menu

    : Navigate to Settings > More > Mobile Networks > Select your Service Provider > Preferred Network type

  2. Engineering Mode

    : Install MTK Engineering Mode > Launch the app > Select MTK Settings > Tap Network Selecting (Under the Telephony tab)

How do I fix no service or reception while in WCDMA or 3G only mode?

Ideally, downloading the firmware at and flashing it (especially secro.img) using SP flash tool @ ought to fix the issue. Also, using SN Writer @ to write IMEI could help. If these don’t resolve it then:

  • You’ll need to get a working phone of the same model which is not having the issue
  • Flash TWRP recovery to both phones (Use SP flash tool if not rooted and Rashr.apk if rooted)
  • Boot the working phone into TWRP recovery (see and backup the system, secro and nvram partitions
  • Move the TWRP (backup) folder from the internal storage of the working phone to that of the phone having the 3G issue
  • Boot the affected phone into TWRP recovery
  • Restore the backup and reboot the phone


This fix also works for the WiFi NVRAM WARNING Err = 0x10 and the NVRAM WARNING Err = 0x02 errors

I have tried the TWRP method but the issue persists. What can I do?

Try the NVRAM Restore Method at

Comments (67)

  1. I’m so very grateful for this. A lot of people have been suffering this thing just like me too. I’ve tried a lot but to no avail. Can I get a twrp backup at least? Thanks i will really appreciate it.

  2. Can i make use of CTr recovery ? I’m asking because my phone doesn’t have support for twrp. It is a gionee p2

  3. I do not see the option secro.img in twrp. nvram and system only choice when going backup system. where is it?

  4. sir. I restore nvarm and system of mobile phone my friends who are not exposed to problems.But still has not shown up 3G / 4G network on my phone. how to think about the solution?whether its troubled ic PA?

  5. please sir, please upload nvram from your handphone to me. I am user infinix note 2

  6. HOVATEK pls do u have the backup file which are not having that problem for techno j5…

  7. No pls…tell me

  8. so, with 3g only problem …what am i writing?

  9. I wrote the imei only successfully buh still the prob. persist..

  10. Am using techno j5
    Cant find any friends with this phone

  11. 3g only doesnt work

  12. it doest work for me am using infinix x551

  13. but i have solve it nw with another method

  14. Pls hovatek….may Allah continue to bless you and your family,i dont av any body beside me dats using gionee p5w….my phone wont bring network when on 3G only….pls and pls….wat best solution do you have for me….cos der is no gionee p5w to do any backup….Thanks

  15. Please hovatek can I get an Nvram backup for infinix x506? No one around me uses this phone.

  16. hi hovatek, I’m currently using a BLU STUDIO G. 3g works well in Chicago, now I’m in Africa….3g just went off…
    Any solution please?

  17. Please in serious need of assistance, having the issue but in my Samsung galaxy Core prime. Won’t bring out service when wcdma only. Help please

  18. I’m having the same problem with a Doogee X7 Pro (MTK6737m processor). The cell phone is still not working. I wrote imei, wifi mac, bandbase is ok, and the phone has no network signal. The solution is a backup of the nvram folder, but I can not find it anywhere. It can be any nvram of a device with MTK6737. Can someone help me?

  19. Good day Mr Hovatek. I’m having network issue with tecno j7. The sim 1 and sim 2 is not always bringing network together, it’s only one sim that brings network when network mode is set to 3G but if it’s on 2G, it won’t. Please what’s the solution for it, if you have ever across such situation or problem on tecno J7

  20. i use coolpad y71-811. but am having a problem of 3g it only show edge (2g)i have tried usin the short code i.e*#*#4636#*#* but it never worked. pls i need a solution.

  21. hello good day. I am using xbo v11 but i cant get 3g network. Pls what will i do.

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