If you have iOS 9 or later, any apps that use Apple’s built-in crypto library appear to be immune anyway.
They tried Android phones, too, but apparently had some trouble, because they needed lab-grade equipment to sniff out the DOUBLEs and ADDs on their Xperia x10.
source - https://www.cs.tau.ac.il/~tromer/mobilesc/
origin - http://www.pipiscrew.com/?p=4261 forget-iphone-backdoors-heres-a-side-door-that-can-steal-your-keys