Is there a better way to remove stickers from old devices?
water to remove the paper and a stupid pencil rubber to get the sticky junk off. It´s a bit of work but results are amazing.
I hadn't thought of that. I'll try it. I have used "Mr. Clean Magic Eraser" (generically, Melamine foam or Melamine sponge) and it can work well. Note that despite the outwardly soft appearance, these are abrasive and can leave micro-scratches or dull shiny surfaces like paint or plastics. I'd probably use a white vinyl eraser rather than the pink rubber type for the same reason.
I usually try to stick with 99% IPA since it is generally safe for plastics and paints. (Ethyl alcohol, contained in "denatured" or "methylated" spirits, will quickly destroy some plastics like acrylic). If IPA fails, I have used a citrus oil based cleaner such as "Goo Gone". A light mineral oil (unscented "baby oil") can also work well. The 99% IPA can then remove the oily residue left behind. The mineral oil / baby oil trick also works very well on your hands for removing sticky stuff such as tree sap. A little of the oil dissolves the goo, then soap washes it away easily.