Fix Kit Contents: New iPhone 4S Battery Pentalobe 5-point screwdriver Phillips 000 screwdriver Plastic opening tool Small Suction Cup iPhone 4S Battery Replacement Li-Ion 3.7V 1430mAh 5.3Wh with 2 x screwdriver by FixCracked. Easy to replace and fits precisely. Comes with cross and pentalope screwdriver High Quality Replacement Part. Compatible only with the iPhone 4s not 4 Perfect fit and tested so when you plug it in the battery should just work right away, you will get the same power and phone will be charged as normal and will work as good as when you first get your device. Complete replacement kit with instruction installation guide step by step with picture printed with color in a booklet. Compatible only with iPhone 4S any capactity and any carriers (will not compatible with the older version iPhone 4)