[frankchen76]

thanks for your reply.
I understand it might be a feature for a phone to save energy when battery is too low. But, after I got full charge, It still shows disable status. It remains disable even I soft reset or hard reset. I think it doesn't make any sense. Beside, I wasn't able to find how to turn that enable.
Anyway, I will keeping trying. If you have any idea or steps, I will appreciate.