I use "Bread Wallet"
That is pretty good, u can see ur Wallet ID/Addres. You see ur Qr code were friends can send Bitcoins to!
You can secure it with a pincode (Example: 1234) so if you want on it fill in the pincode! And you got a back-up phrase if you lose your phone or something you can restore it with that back-up phrase and get all your Bitcoins back