In Mobile wallets: Having stored bitcoin or other crypto coin on your mobile wallet app, want to know if changing of device do affect the wallet? Like re_downloading the wallet app on a new device.
So long as you have backed up your Seed phrase, Mnemonic phrase or private keys somewhere or on a piece of paper. You can still be able to restore your addresses in a new mobile wallet in a new device.
What is most important is those backups. Make sure they are correctly backed up and very safely kept because you don't want anyone to access them. If they do, then they will be able to access your cryptos.