While I haven't tried it, I did use its instructions to replace a keyboard on an old Mac laptop and a battery in an iPod, and in both instances the instructions were perfect and simple to follow.

尽管我还没有试着换iPhone的电池，但我确实根据它的说明更换了旧Mac笔记本的键盘和iPod的电池，两种情况的说明很准确，照着做也比较简单。