Huawei FT2050 User Manual - Page 5

Installing a UIM Card (Optional)  Note:  Contact your service provider to find out whether a UIM card is required.  Because a UIM card and its gold contact area are easily damaged by scratches or bends, install or remove the UIM card with care. Install the UIM card as shown in the following figure. Ensure that the gold contact area faces down, the beveled edge of the UIM card aligns with that of the UIM card slot, and the UIM card is fully inserted. Installing the Battery  Note:  If the ambient temperature exceeds the temperature allowed for charging, the FWT stops charging the battery.  If connected to the power adapter, the FWT automatically charges the battery and stops charging when the battery is fully charged.  Remove the battery if the FWT is not in use for a long time.  If the battery has not been used for a long time or if the battery runs out of power, the FWT's indicators may not turn on as expected when the battery is charging. This is normal. The FWT can be powered on after the battery is charged for a while.  Generally, the FWT sources its power from the line power supply using the power adapter. It sources its power from the battery only when there is a power failure or no power outlet is available.  The battery supplies power for only a limited period. Ensure that the battery has been fully charged before using the FWT without the line power supply connected. Connect the battery cable to the battery port, ensure that the battery terminals are not reversed, and place the battery in the battery compartment. 3