While technical guides exist online (often on forums like 4pda, Reddit, or LTE Hacks), changing the IMEI on a ZTE MC801A is risky, legally problematic in many regions, and not recommended for average users. Proceed only with full awareness of the legal and technical consequences. If you need to use a specific SIM, contact your carrier for a legitimate solution first.
If the goal is to use different SIM cards without modifying system hardware, consider official network unlocking DirectUnlocks zte mc801a change imei hot
Often used alongside QPST to read and write NV (Non-Volatile) items, specifically ID 1992 , which is commonly associated with IMEI/MEID settings. While technical guides exist online (often on forums