Turn your phone to vibrate device, you can use it to test vibrate of phone, massage or do something you like, I have test on SamSung Galaxy, HTC, Sony, Xiaomi it worked well. Have fun with this tool
#Features:
Test vibrate
Massage
More vibrate mode
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https://forums.androidcentral.com/e...tails?id=com.phongphan.vibrate&token=E0qQubSJ