I followed the guide for battery replacement and everything worked well. My only problem is with the tools used in the guide or should I say the ‘description’ of the tools in the guide. I purchased the 64 piece tools kit just for the purpose of repairing my tablets and iphones when necessary. the tool kit is laid out very well in its case, however, the guide doesn’t use the same nomenclature as the bits within the kit! The guide uses 1.2 mm screw or 1.3 mm screws but the kit labels screws as P00 or P000. It is a matter of guess work in FEELING the resistance or slippage while working with each connector. I would like to suggest that the size of tools in the toolkit match the guide within the teardown.