This document is a user manual for OPSSON U58 GSM/GPRS digital mobile phone, introducing the technical reference, phone layout, button instructions and functions, getting started, etc.
This manual describes the OPSSON U58 dual‑SIM GSM/GPRS mobile phone, its features, and how to use it safely. It includes a technical reference, a diagram of the phone’s parts, and explanations of each key and its functions.
Key sections cover safety precautions, SIM and memory‑card installation, battery removal, installation and charging, power on/off procedures, USB data transfer, and troubleshooting. The document also lists environmental compliance information and the list of hazardous substances in the device. This manual is written in Chinese.
| Model | OPSSON U58 |
|---|---|
| Dimensions | 104#51. 2#17. lm |
| Battery capacity | 1200 mAh |
Power off the phone, remove any external power and the battery, then insert the SIM card into the appropriate SIM‑1 or SIM‑2 slot; the phone supports two SIM cards.
Turn the phone off, remove external power and the battery, then take out the SIM card from its slot.
No, the phone is not waterproof and should be kept dry.
Press and hold the power key for a few seconds to turn the phone on; press and hold the same key to turn it off.
Connect the charger’s plug to the phone’s charging port; a charging indicator will appear on the screen, and you can disconnect once fully charged.