What wallet is best for leaving small amounts of btc on phone?
I use Blue wallet (iOS). It's open source, updated regularly, non custodial and even supports Lightning in case you ever want to play around with it.
Are there ppl that have huge amounts of btc on their phone? Its still safe though as long as you put a password on it right? What about having the iphone lock password only or is that not enough?
I've seen people using their old phones as some kind of cold storage wallet. AFAIK, it makes sense considering that it's probably much easier to get a malware on your regular PC (specially if you are on Windows) than on your iPhone.
However, if it's your day-by-day phone, you should just leave small amounts there for potential 'real life' transactions. If you lose it, there is no way to access it unless there are vulnerabilities to bypass the lock and/or jailbreak it, but that would also require physical access to the device and you can always move your coins to another wallet (assuming you have the backup seed, which you should) before anyone even thinks about accessing it.
And of course you should put a password on both the phone and the wallet. The more the better.
