You can have a fully functional lightning wallets on your phone. Muun is a good example and wallet of satoshi works well on nostr, however it is custodial. I wouldn't hold too much on a phone wallet tho. Treat it as you would cash and not carry too much
Discussion
How about bluewallet or electrum?
Yeah blue wallet is fine but they are discontinuing their lightning support. The Bitcoin wallet part is still fine. Electrum is fine too, although I haven't used it