Apple ipad 4 has a charging dock also called a dock connector. Its usage is twofold. It can be use for charging the energy bank “battery” and for making connection to other electronic devices via USB. A faulty dock connector means you will neither be able to charge the battery and nor you will be able to make a connection through USB. If such issue are seen in you ipad 4 visit to us at JLT in Dubai or make us a call at 04 4211494 to activate the free pick and drop service. Our technicians handle the issue with expertise and professionalism. We ask no fee for a suggestion or problem diagnosis.