Instructions to screen record on Viettel phones and tablets

Viettel V8413 Viettel V8413
Viettel V8501 Viettel V8501
Viettel V8502 Viettel V8502
Viettel V8503 Viettel V8503
Viettel V8505 Viettel V8505
Viettel V8506 Viettel V8506
Viettel V8507 Viettel V8507
Viettel V8403 Viettel V8403