Encryption Warnings
Before you enable encryption, be aware that there are some drawbacks:
Slower Performance: Encryption always adds some overhead, so your device will be a bit slower. The actual speed decrease depends on your phone’s hardware.
Encryption is One-Way Only: After encrypting your device’s storage, you can only disable encryption by resetting your phone to its factory default settings. This will also erase all the data stored on your phone, so you’ll have to set it up from scratch.
Not everyone should enable encryption, as it will do more harm than good for many people. If you still want to enable encryption, read on.
How to Enable Encryption on Android
Encryption may take an hour or even longer, depending on how much data you have on your device. Plug in your phone and ensure you have enough time before continuing. If you have to interrupt the encryption process, you’ll lose some (or all!) of the data on your phone.
How to Encrypt Your Android Phone and Why You Might Want To