New sprint 7700 is dual sim phone.New 7700 phone is different of old 7700.So it's solution is different.Now I showing how to solve sprint new 7700 dual sim power button problem.
How to do this work : If your phone has power button not work after phone on or phone on but keypad not work.Then first check power button ways and see result if problem not solve then rehot or reball processor ic.
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