So we are moving to new devices at work. Samsung S3 and Nexus 7 to be replaced by Surface Pro 3 and a TBC phone. We encrypted my phone and tablet as a test before we wipe the contents it the performance after encryption is so poor I want to their the phone away.
Is this normal and is encryption going to be a secure method before we sell or dispose.
No its not normal there should be no noticeable difference. A factory rest should wipe your data if it includes the option of wiping the internal memory. Smart cookies could retrieve some data from the parts marked as wiped but the only way to erase that is to fill up the internal storage with other files after wiping it, thus overwriting your data