I also use for T-Mobile where I get 3% back and then Apple Pay at 2% is a pretty good cash back scheme. Send that cash straight to the 4% savings account.
I have a 2% back Fidelity card which puts it straight into the brokerage money market (basically government securities) account which is paying around 4%.
Yea there are lots of good options these days. The competition is great. Our financial footprint across organizations is pretty large. I'm looking to Apple to eventually allow stock trading or something similar in the wallet app or stocks app with it all linked up. It's not super Apple-y but I think they'll do it.