Originally published at: http://www.howtogeek.com/171980/how-to-prepare-a-computer-tablet-or-phone-before-selling-it/
So it’s the end of the road for your PC, tablet, or smartphone. Before letting go, be sure to follow this quick check list to prepare your device for its new owner.
One thing I found recently: Android phones do not necessarily wipe the SD card when doing a factory reset. You want to format the SD as well if your phone is equipped with one.
Or you could just remove the SD card and let the owner get his/her own.
I recently had to reset a Kindle Fire to factory settings when attempting to correct a problem. When I reauthorized it there were many files, settings, favorites that were on the tablet again, without me restoring any of it. Is this because of the Cloud functionality inherent in Amazon tablets? I may need to send the tablet back and wanted to wipe it clean first, but this makes it appear as if not everything is truly purged when you do a factory reset....
To empty everything off your Droid, do a
fastboot erase on
recovery. This method also has a tiny side effect of rendering the device unusable, unless you flash it back somehow.
You've gone through so much trouble when you could have just used Linux.