2 Mobile phones? Then it's better to use the other one as a cold-storage for signing transactions,
and use the main online phone as the paired watch-only wallet for monitoring the balance and creating transactions.
It's a lot safer than just using one of the phones as a wallet.
I agree to this. When we are making signing transactions it is kinda risky sometimes. Our wallet can be easily detected and hacked. But since the other is only used by monitoring then yes it is safe. For me it is also OK to put my wallet on my mobile phone coz unlike desktop or laptop or pc, I can bring it everywhere. But of course I am very carefulcoz I might displaced it.