- Wallet on your phone
I never use crypto wallets on my phone or any kind of wallets on mobile devices, such as tablets. Mobile devices are always more vulnerable to potential threats. Moreover, those devices have limited screen, so they are less convenient for users, and sometimes might more easily cause wrong typing, order making, transaction moving, and so forth.
There's really nothing wrong with storing bitcoin or cryptocurrencies on your phone. Because how are you going to spend BTC elsewhere? It's a worse idea if you bring your hardware wallet everywhere. You just need to make sure to not store big amounts on your mobile wallet.
Think of your mobile wallet as your physical cash wallet, whereas you definitely wouldn't put $1000+ cash in it(unless $1000 is just spare change to you), and think of your hardware wallet as your bank/safe where you store 99%+ of your money.