Click the button while the phone is connected in the bypassed state.
An IMEI usually becomes invalid ("IMEI 0" or "Null IMEI") due to software corruption. This typically happens during: Interrupted official software updates. Flashing incorrect custom ROMs or firmware. Unsuccessful rooting attempts. Corrupting the device's NVRAM/NVDATA partitions. What is Network Locking? realme 8 5g imei repair unlock tool
Professional technicians usually rely on specialized hardware interfaces or premium software suites (often requiring a digital license or dongle) to service the Realme 8 5G: 1. MTK Meta Utility / SP Flash Tool Click the button while the phone is connected