This document is about the user manual of ZTE D90+ CDMA2000 1X/EVDO 3G mobile phone. The document introduces the technical parameters, specifications, and the copyright ownership of the user manual. It also mentions the related information of the Fastap patent.
This manual covers safety notices, warnings, and basic information about the ZTE D90+ handset, including keypad layout, icons, and technical parameters. It also explains how to insert SIM and memory cards, manage the battery, and connect to networks.
Additional sections describe basic phone operations such as making calls, using the keypad, text input methods, and troubleshooting common issues. The document ends with environmental information and hazardous substance disclosures for the device. This manual is written in Chinese.
Press the Unlock key, enter your phone password, and then press Confirm.
Check that a valid SIM card is inserted in the phone.
Adjust the sound settings to enable keypad volume.