: ZTE devices locked to T-Mobile or MetroPCS often use a "Device Unlock App" rather than a manual 16-digit code.
Call your carrier’s customer service line or visit their online account unlock portal. Request the "Network Unlock Code" or "SIM ME Lock Code." Provide your IMEI number and account details. zte router network unlock code 16 digits free
Once you have obtained your 16-digit code, follow these steps to unlock your router: : ZTE devices locked to T-Mobile or MetroPCS