The more safer way would be after moving our funds to another new wallet on another separate phone then we should make sure we factory reset our phone for a safer side and we can use the phone back again but I wouldn’t advice to put the new wallet back on the phone instead just use it for something else.
This should be the only thing to do for anyone who fell victim of the exploit.
Malwares are tricker than we think.
But my question now is, do we need an app to track our crypto portfolio? Like how necessary isn't? Sometimes we are the cause of our own problems. Trying to be fancy, trying to be lazy only make things terrible for us.
If you have so many cryptocurrency, you can always keep track of them from time to time. Or if you don't want to connect them to the internet which is not ideal, then create a watch only wallet of all your cryptocurrency and watch them.