It's so great to have a set of bits for purposes like this. Manufacturers are making devices tamper-proof that their longevity is severely reduced which just adds to electronic waste. Thanks to kits like this I can repair my mp3 players and repair my own cell phones to save a lot of money. Of course, you should only attempt these kinds of repairs if you're a technical person or you risk doing more harm than good.
I have used this toolkit to open several phones that needed battery replacements plus a few screen repairs and the screws were all non-standard. The spudger and the bonus suction cup that it came with are so helpful.
All of the bits are magnetized and the kit comes with a magnetizer so screws will never get lost. The case is well designed and will ensure no bits will fall out.
This kit may not be able to take care of every need, but it will help with the majority of gadget repairs. I'm very thankful for kits like this.