How to Permanently Erase All Data from HTC

I am a HTC user. I've been using HTC for years. I do not have a high demand for phones, so I am still satisfied with my HTC.As my friend gave me a new phone as a birthday present, I am going to send my old HTC phone to secondary market. I told my friend about my idea, but he reminded me to delete the data in the phone permanently. And I just restore the factory settings, which means that the data in the phone is permanently deleted? It's wrong opinion. Restore factory settings cannot represent the phone data is permanently deleted. Today, there are many powerful data recovery software can recover the deleted data in the phone. In order to cope with this recovery software, you can only use a professional delete tool to permanently delete the data. Since your HTC is a Android phone, then you can use the Android Data Eraser to permanently delete all data from HTC in a click. Android Data Eraser can provide you with a strong cleaning effects. Once you use the software to erase th...