Plain-English definitions of carrier-unlocked, factory-unlocked, SIM-free, network-unlocked, and bootloader-unlocked devices — what each term means, who issues it, and which one you actually need when buying or unlocking a phone or router.
Why free Huawei V5 calculators fail in 2026, what the V5 algorithm actually is, which Huawei devices use V5 vs V4, and the step-by-step path to a code that works on the first attempt.
Network unlocking does not erase data. We explain what an unlock code touches (baseband only), why the myth persists, and when data is actually at risk.