I have two problems.
The left button is not working. All other button are functioning correctly. I’ve inspected the soldering and can’t see anything wrong 9compared to the other buttons.
I think we have a defective charging unit. The battery is not charging as far as i can tell. On inserting a USB I notice that the red LED only illuminates intermittently when hold the cable at a particular angle. Occasionally I’ve noticed that the white LED illuminates only occasionally. I assume a poor connection in the socket.