-snip-
I don't intend to use it for anything but a small holder of Bitcoin as I do intend to get a hardware wallet to store it properly. Presumably the challenge will be to later find a wallet that handles more than just Bitcoin.
If you are focus on storing Bitcoin, you can use the Blue Wallet Application on Android or iPhone (
https://github.com/BlueWallet/BlueWallet). Blue wallet also supports lightning wallet, so you can use it to transact small amounts using bitcoin. Other features, Blue wallet, can also be connected to a hardware wallet that supports PSBT*:
https://bluewallet.io/features/.
I do not affiliate with a Blue wallet; please look for further references if you want to try it. DWYOR.
* https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki