I think saving digital money on the phone is essential but it is easy to hack or steal. Because it seems that the android operating system is an open operating system and it is easy for hackers to hack and steal data
have you read the post ! it said "The TEE runs its own execution independently, which means that the RAM and storage of the phone are separated from the main operating system of smartphones" that means even if your mobile gets hacked , they won't be able to access your wallet . a big company like Samsung already aware of hacking attempts of smart phones and with this feature , i can see huge leap towards more innovations like this .