A:
While I didn't use this charger with a Lifeproof case, I did use it with the thickest otterbox you can buy for the 5s (I'm military, and very brutal with phones). If you can plug the standard iPhone charger into your charger port, then yes, this charger will plug in just fine as it's very close in design in that sense. The thing you'll have to be careful of is UNplugging the port. The hard plastic that actually plugs in to your phone may be hard to get your fingers on, leaving your to pull on the cord, which is never recommended, but sometimes you don't have a choice. I'll say I've pulled on the cord several times and it's held up pretty well with my abuse, so long as you don't try to yank it out like Thor, or at an awkward angle, you should be fine.