Samsung SCH-U640 User Manual (user Manual) (ver.f10) (English) - Page 21
Shortcut/Push To Talk PTT, microSD™ Memory Card Slot - ringtone
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Features (Closed view) 1. Camera Lens: Allows you to take photos and record video. 2. Shortcut/Push To Talk (PTT): Press to launch a shortcut menu. Once Push-to-Talk is activated on your phone, press to initiate the Push-to-Talk feature. 3. Volume Key: Allows you to adjust the master volume or adjust the voice volume during a call. To mute the ringer during an incoming call, press the volume key up or down. Also press and hold the key, to activate Sound Off mode/ Normal mode. 4. Charging Port: The charging port is used to plug in the charging accessories and also connect any available accessory cables to your phone. 5. Rewind Key: During music playback, press and hold to rewind music. Press to go to the previous song. 6. Speaker: Music, Ringtones and Sounds are played through the speaker. 16 7. Play/Pause Key: From the external home screen, press to access an external menu of applications with the hone closed. For more information, refer to "Playing Music with the Phone Closed" on page 128. 8. Fast Forward Key: Press with the backlight On to Lock/ Unlock external keys. Press and hold with the backlight Off to Unlock external keys. During music playback, press and hold to fast forward music. Press to go to the next song. 9. microSD™ Memory Card Slot: Allows you to insert a microSD™ memory card (purchased separately) to add additional memory and storage capacity. 10. Speakerphone Key: Press and hold this key to enable/ disable the speakerphone option. 11. External LCD: External LCD shows signal and battery strength, time, day, and date. It also displays incoming calls or messages. 12. 2.5mm Headset Jack: Allows you to plug in an optional headset for safe, convenient conversations. 13. Battery Cover Removal Tool: Use to lock/unlock the battery cover.