After factory reset my phone starts showing "Invalid IMEI" on both sim slots and I can't call or be called. What might be the problem?

Android version; 2.2.1 , model: A601

  • 1
    What is A601? I can only find a missile ship (doesn't run on Android), a WiFi router, and a Motorway... Ah, you probably mean this China phone?
    – Izzy
    Jul 1, 2013 at 7:27
  • @Izzy Oooh! I like the China Phone :P AFAIK, this error results from fake IMEI's. Did you try rolling back and checking the IMEI again? Maybe another factory reset?
    – Sid
    Jul 1, 2013 at 7:40
  • It could be that this manufacturer's way of storing the IMEIs for the dual SIMs is not preserved across factory resets, so the reset has deleted the IMEI.
    – Dan Hulme
    Jul 1, 2013 at 7:48

1 Answer 1


If it has a Mediatek (which usually cleared IMEIs after flashing), you can try entering the IMEIs (found on the retail box) manually using *#*#3646633#*#*, and finding the option in Radio settings. I can't be sure if this works with newer MTK devices.

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