No need format for many spd phone for Pattern lock or wipe data

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Boot Your Qmobile a2 and a4 light &micromaxx a27,A35 karbonn a3 into FastBoot
Press Volume Down + Power For 20 to 30 Seconds

Many phone enter in fast boot mode with diffrent key

Share Fast boot Mode Key



Now Plug USB cable to Phone
go to mtk tab
untick auto detect pinout
FAstboot
Wipe data
run