Qualcomm Sim Lock Unlock Tool Fix

| Phone Brand / Chipset | Effectiveness | Notes | |----------------------|---------------|-------| | | High (70-90%) | Many free tools work. NV edit is easy. | | SD660, SD665, SD670 | Medium (30-50%) | Some patches work; newer firmwares block diag write. | | SD845, SD855, SD865 | Low (10-20%) | Qualcomm SecureMSM / TrustZone blocks unauthorized NV writes. | | SD888 and newer | Near 0% | No public free tool works. Requires paid server (Octoplus, Chimera) with official exploit. |