But I don't think that is a good idea. Instead if you bought another controller that is flawless again, what would you do next ? Buy a new controller again ........... ? That solution is not adequate . We need to think about the basic problem, then give solutions to it.
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=== Update (05/04/2017) ===
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Firstly, you can check if the battery goes wrong. If there is something wrong with the battery, you can change another one. Then you can check if there is something with the system of your phone. After checking, please inform me of the detailed problem. I am looking forward to your early reply.
But I don't think that is a good idea. Instead if you bought another controller that is flawless again, what would you do next ? Buy a new controller again ........... ? That solution is not adequate . We need to think about the basic problem, then give solutions to it.