My iPhone hot wallet preference is Breez, as it's self custodial and has the lowest LN fees to setup a channel. I don't know anything about the team though, which I like to know whether or not they're decent people.
If QR code doesn't work, I'll research how to manually do it.

I think I just learned recovering mnemonic/seed phrases need atleast 1 transaction, as my test cold wallet recovery tests fails with Electrum and Sparrow.