Has anyone tried to attach a card holder on the back of the case?

I want to attach a card holder on the back - but I'm worried it'll be too bulky and that residue will stain the silicone battery case permanently.

Apple iPhone 7 Smart Battery Case

Apple iPhone 7 Smart Battery Case

Product No Longer Available

1 Answer from the Community

  • I have a Sinjimoru card case stuck onto the back of it. Definitely makes it a bit bulkier (with 4 cards in it), but I actually don't mind it. If you line it up right, that plus the bulk of the battery gives it a nice little ledge for finger support.

    Not sure about staining...I haven't taken mine off.