Is the wallet inaccessible and if it is not then why? As per my knowledge the wallet is available on Samsung mobile phone. Considering your wallet, I mean you handset is always connected to the internet then it is risky.

What you are talking about is a hot wallet and these kinds of wallets are prone to get hacked. Why? They get hacked because of the owners negligence. I have nothing negative in my mind about the brand.

I feel that it is best to use a hardware or a software wallet that is non custodial and it not always connected to the internet. Hardware wallets are best if not then store your coins on a wallet that is not connected to the internet.

For example use an old laptop or an existing Android phone which you don't use. Install a software wallet like Trust wallet or any other and connect it to the internet when you need to do any transaction.