How to block, mark as spam, or unblock phone numbers on ZTE devices

ZTE Tempo Go ZTE Tempo Go
ZTE Blade A6 ZTE Blade A6
ZTE Blade A3 ZTE Blade A3
ZTE Blade X ZTE Blade X
ZTE Axon M ZTE Axon M
ZTE nubia Z17s ZTE nubia Z17s
ZTE nubia Z17 miniS ZTE nubia Z17 miniS
ZTE nubia Z17 lite ZTE nubia Z17 lite
ZTE Blade Z Max ZTE Blade Z Max
ZTE Blade Force ZTE Blade Force
ZTE Tempo X ZTE Tempo X
ZTE Blade V8 ZTE Blade V8
ZTE Hawkeye ZTE Hawkeye
ZTE Blade V8 Lite ZTE Blade V8 Lite
ZTE Blade V8 Mini ZTE Blade V8 Mini
ZTE Blade A520 ZTE Blade A520
ZTE Max XL ZTE Max XL
ZTE Axon 7s ZTE Axon 7s
ZTE nubia Z17 ZTE nubia Z17
ZTE nubia M2 Play ZTE nubia M2 Play