I bought the whole package of uncertainty and out of pure caution. The battery has the same name as in the I Phone .Werkzeug comes with manual on, everything as described. But ... The tool is disabled, rather coarse view the description .Beides superfluous. You need precision mechanic screwdriver from a hardware store and definitely tweezers, unless you have small delicate fingers. The instructions you will bring you prefer from the Internet. In no description is made aware of a small metal particles but what is important when reassembling. So please look carefully as the metal seated (differences between 4 and 4S) so that you do not have to sweat afterwards. The battery is super, my phone keeps back by much longer, had thought of a new cell phone so it is significantly cheaper.
