Thank you. I don't think I would be able to touch anything newer than that, honestly. Especially with current-generation devices, where everything is literally glued together, to a point where disassembling it and assembling back is next to impossible unless you have the specific tools (and skills) already.

I have iPhone 5S and the battery is kind of giving up. Still going to try to find a shop (too bad it won't be Apple official one) where they'd do a battery replacement before buying a new one.