level 2 add-on service includes all level-1 disassemble service with addition of Device reassembly, device sealing and glue with parts mail in by customer. Please note due to the variable condition of LCD screen/ Digitizer send in by customer ordered from a third party can have significant imperfection. We at CyberDoc do what we can to put together and seal your product with the part you provide us in dust free positive chamber. This service do not cover and CyberDoc can not be responsible for any preexisting imperfection from part you provided us with like fingerprint or scratches...ect.