Veeki&reg; Lg G4 Qi Wireless Charging Ic Chip+nfc Antenna Sticker for Lg G4 H815 Us Cellular T-mobile H811 At&t H810 Verzion Vs986 Sprint Ls991 Korean Version F500 Battery Back Door Cover or G4 Flip Case Please be noted: the original battery back cover leads on the sticker are not raised high enough to maintain constant contact with the contacts on the LG G4, please place a couple of strips of electrical tape under each contact area of the sticker to lift them a bit, it helps a lot to keep them to stay tight. short-circuit protection of the receiver to avoid overcharge & overheating, security and reliable Apparently the connectors for the wireless charging may not 'protrude' enough to make contact. Folded up the connector and put a small piece of folded up tape behind it. All our products have 1 year warranty so for any issues we will provide full refund or send a replacement unit. NOT WORK with LG G4 Tmobile H815 and LG G4 US991