My Nexus 4 invites problems on the device. Against slipping the smooth glass back I glued two strips of a thin, self-adhesive silicone rubber band on the charger. One or two thin rubber bands or a few very flat rubber buffer it would do probably. Because the Nexus 4 (and thus probably the LG Optimus G) easily slips off the charger without such tricks, 1 star deduction. Charging time from 15% to 100% is approximately 3 hours, it has turned off then and was not hot the next morning. The store will also work if the Nexus 4 in a bag (eg mumbi Premium Genuine Leather Flip Case Google Nexus 4 Case Cover - Leather Case Nexus 4 cases) infected. But since I have only briefly tested and not fully charged. UPDATE: Unfortunately, there was in a second test with the bag repeatedly interrupts charging. The bottom of the bag is also several millimeters thick.