Cops should not be able to seize cell phones. It is in effect stealing money if you have the Bitcoin.com app on there.
That's why you need to lock your phone with a strong password and set a pin-code/fingerprint lock on your wallet. Most phones have built in encryption.
Get a cheap #android phone which has the ability to remove the battery. Then put a piece of paper between the battery contacts & only remove it whenever you need the wallet.
That could work as an alternative hardware wallet for storing larger funds. However, for convenience I like to have a spending wallet on my primary phone for smaller purchases.
Fingerprint is actually a very bad idea, because police can force you to put your finger on that phone or robbers can do it for you after knocking you out or drugging you!