All you need is a solder to fix it, disasemble the powerbank, plug your phone to the powerbank and check in what position it's charging, fix the position by sticky tape or whatever and melt a bit the plastic that is '''ON''' the USB port just like on this picture, this way you will fix and the plastic in place that it will hold the USB port with ease. [http://prntscr.com/9ii4h8|How it's done picture here.] :)