Possible to erase iPhone before selling from a computer?

Elorasver  If you want to ensure your data is permanently gone, using specialized software designed to overwrite the deleted information after performing a factory reset is recommended. This process overwrites all storage sectors with random data. This makes there is no means to recovery any data from the device.

Another possible solution to to feed up the iPhone with big movies one more times. By doing this, the new movie will overwrite the existing erased data. Repeat one more times and it is quite safe in order to erase iPhone from computer before selling it to someone else. However, it is more time consuming to do this.

So, while a factory reset makes the data much harder to recover, it doesn’t guarantee complete destruction of the data unless additional steps are taken.