Ok... This is why ans this is how u fix it. Blu phones are decent for the price. But QA sux. When i took apart my blu vivo air i saw that glue melted or somehow got onto the usb soder to circuit board. Simply go over with 97% isopropyl alcohol and while your at it do the other pars that are glued tha may have goten on to other parts. For instance the home buttons also had glue and had. To be cleAned. The first attempt i some how got glu o. That part. Second disassemble fixed th buttons. Its just glue. Clean it and charge on