This document is the user manual for the U721 product from ZTE Corporation. It provides information about the hazardous substance content status of the product, warranty regulations, and usage precautions.
This manual covers safety warnings, proper handling, and legal notices for the ZTE U733 mobile phone. It explains the importance of using only original or manufacturer‑approved accessories and provides instructions for charging, battery care, and protection against environmental hazards.
The guide also details basic operation, including inserting SIM and memory cards, adjusting volume, setting time and date, using WLAN, and accessing phone functions such as calls, messaging, and media playback. Additional sections describe airplane and vehicle safety, warranty terms, and troubleshooting tips. This manual is written in Chinese.
Contact your carrier and follow their procedure to suspend the SIM card.
Turn off the phone before take‑off and do not use it during flight.
Use a charger that supplies 220 V AC as specified by the manufacturer.
Only original or manufacturer‑approved accessories may be used.