How can I wipe my HTC one before I sell It?

Question

I am going to sell my old Phone on Ebay but I want to make sure there is nothing left on it.

Answer 1

First of all open settings and their you will find factory data reset select it and select erase all you will have your work completed have fun !!!

Answer 2

Go to Settings, and then tap Backup & reset.
Tap Reset phone.
To also delete media and other data from your storage card, select Erase SD card. Then Tap OK :-)