- Set a password on your phone. I dunno about iPhones but for recent Androids, that will encrypt all files on the phone. Voila. You're done. - Queue up a wipe

- Set a password on your phone. I dunno about iPhones but for recent Androids, that will encrypt all files on the phone. Voila. You're done. - Queue up a wipe remotely which will take place as soon as the phone is turned on.