Despite recent negative reviews I still tempted by this battery ... And I already regret. First, and contrary to what other reviews say, no tool is supplied with. Second, after installing the battery it is totally useless. The iPhone is turned off and on again continually re-disassembly and relocation of the old battery, no problem. The concern therefore is really from this battery. I am very disappointed and you clearly recommends to go your way. A word.