Samsung SGH-I777 User Manual (user Manual) (ver.f4) (English(north America)) - Page 14

Although you can use the phone while the battery is charging, doing so will require additional charging time. Note: You must fully charge the battery before using your phone for the first time. A discharged battery recharges fully in approximately 4 hours. Using the Travel Charger Important!: Verify that the handset battery is installed prior to connection. If the battery is not properly installed and the wall charger is connected, the handset may power off and on continuously, preventing proper operation. Correct Incorrect 1. Plug the flat end of the Travel Charger into the Power/ Accessory Interface connector and the other end into a standard AC wall outlet. 9 2. When charging is finished, remove the flat end from the interface connector jack on the phone. Warning!: If your handset has a touch screen display, please note that a touch screen responds best to a light touch from the pad of your finger. Using excessive force or a metallic object when pressing on the touch screen may damage the tempered glass surface and void the warranty. For more information, refer to "Standard Limited Warranty" on page 183. Note: Failure to unplug the wall charger before you remove the battery, can cause damage to the phone. Low Battery Indicator When the battery is weak and only a few minutes of talk time remain, the battery icon ( ) blinks and the device sounds a warning tone at regular intervals. In this condition, your phone conserves its remaining battery power, not by turning off the backlight, but by entering the dimming mode. For a quick check of your battery level, glance at the battery charge indicator located in the upper-right corner of your device's display. Solid color ( ) indicates a full charge. When the battery level becomes too low, the phone automatically turns off.