had the phone workin today after replacin the battery, and headphone jack assembly, said no sim card there was one, took it apart again, and found problem, stuck phone back together, now the beep comes on when ya plug it in, but the screen no longer works.. the "3rd" lil cable insert is loose, doesnt stay in place very well, not sure what problem is.. anyone know how to fix it? please hit Me back ASAP..