Android Encryption - speed / performance impact?

[Sumanji]

Hey,

Do any of you guys run full disk encryption on your Android devices?

If so, what's the performance impact like? Does it make the device feel more sluggish / laggy?

I'm particularly interested on devices from a couple of generations ago (GS3, HOX, HOS etc.).

Cheers,

Su

 

[Sumanji]

Hey,

Basically I have a Moto RAZR HD, which is bootloader unlockable, and I want to run CM11 on it. However, there is no way to relock the bootloader, so if the device is stolen, all the data on it is there for the taking. I am running CM11 on my Nexus S, but since it is a Nexus device, the bootloader is easy to unlock and relock. So after installing CM11, I reverted to stock recovery and relocked the bootloader, which makes it just as secure as a stock device (root is also disabled).

Ok, so I'm not exactly carrying the nuclear launch codes on my mobile phone but it would be nice to have an insurance policy to protect my personal data if the worst were to happen.

But I basically want to know what sort of performance impact to expect from FDE... and yeah I noticed that Android devices have pretty crappy write speeds which is annoying...

Cheers,

Su

 

[Sumanji]

^ Exactly...

Unlocked bootloader means an "attacker" can flash a custom recovery (if you haven't already), make a dump of all the data on the phone, and then... who knows what

Only FDE can provide any level of protection against this.

 

[Sumanji]

Very true... but it doesn't take a genius to figure out potentially how much more valuable the actual data is than the device itself.

Better safe than sorry!