UnlockTool is currently one of the most popular choices for technicians. It supports a massive range of chipsets, including MTK (MediaTek), Qualcomm, and Spreadtrum. It is highly regarded for its ability to bypass iCloud (Hello screen) on older iPhones and its robust FRP removal features for Android. 2. SamFirm / SamFW Tool
Known for its stability, this is a hardware-software combo (often requiring a physical "box" or dongle). It is the gold standard for professional repair shops that need to perform complex IMEI repairs and deep flashing. Risks and Legal Considerations multi unlock software