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
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1What 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 '13 at 7:27
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@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 '13 at 7:40
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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 '13 at 7:48
