I invested in a screw driver set from Amazon that included all of the tiny driver bits. Very useful for this kind of thing. I replaced a battery in a Kindle with it. Link: https://www.amazon.com/Vastar-Magnetic-Precision-Screwdriver-Smartphone/dp/B015F734P0/ref=sr_1_16?s=power-hand-tools&ie=UTF8&qid=1515083900&sr=1-16&keywords=screwdriver+set