My phone goes on and off by itself

[Android Central Question]

It goes on and writes on the screen Tecno powdered by Android
The goes of again then on repeatedly

 

[B. Diddy]

Welcome to Android Central! Try plugging it into a wall outlet and letting it charge undisturbed for at least 6 hours, then try powering on again.

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[Ben xfg]

It goes on and writes on the screen Tecno powdered by Android
The goes of again then on repeatedly

Try wacking the power button a few times.

 

[mustang7757]

It goes on and writes on the screen Tecno powdered by Android
The goes of again then on repeatedly

See if any buttons are stuck and clean them