Android:

Installs Tabernus App, uses an OS call to unmount and erase external storage and then subsequently performs an overwrite of the freespace using a HMG algorithm followed by a  factory reset to secure the device.


iOS:

Cryptographic Erasure using the proprietary Apple iOS commands, followed by a complete overwrite of the devices firmware which happens is combined with a complete factory restore, deploying the latest firmware from Apple.


Blackberry:

Cryptographic Erasure using the proprietary Blackberry commands, followed by a complete factory restore and reset.