5g phone questions

Hi.

I’m trying to compare:

1. https://www.t-mobile.com/cell-phone/tcl-30-xe-5g
2. https://www.t-mobile.com/cell-phone/motorola-moto-g-5g-2022
3. https://www.t-mobile.com/cell-phone/t-mobile-revvl-6-5g

I would use the phone mostly for calls and occasionally to browse an item’s details when I’m at a store. My existing phone is an iPhone.

I’m concerned about system file space, I’ve read that some times OS files can bloat to several GB. How many GB would system files typically take up on each of the above phones?

Aside from that, I welcome any other thoughts you would like to share. Seems the TCL has the best review based on the 3.5 score, although the other phones don’t have many votes to go off.

Thanks.