S e t t i n g s a n d t o o l s72DTMF tonesDTMF tones or touch tones are the tones that sound when youpress the keys on your phone keypad. You can use touch tonesfor many automated dial-up services such as banking andairlines or for entering your voice mailbox number and password.To set the key tone length, select Menu > Settings & Tools >Call Settings > DTMF Tones. Select Normal to send out a tonefor a fixed period of time no matter how long you press thekey or Long to send out a continuous tone for as long as youkeep the key pressed.■ BluetoothBluetooth technology connectivity enables wireless connectionsbetween electronic devices and can be used to send andreceive images, texts, gallery files, voice recordings, video clips,notes, and more. It can also be used to connect wirelessly toproducts that use Bluetooth wireless technology, such ascomputers. You can synchronize your phone and your PCusing Bluetooth connectivity.Since devices with Bluetooth connectivity communicateusing radio waves, your phone and the other device do notneed to be in direct line-of-sight. The two devices only needto be within 10 meters (30 feet) of each other. The connectioncan be subject to interference from obstructions such aswalls or other electronic devices.This device is compliant with Bluetooth specification 1.1,supporting the following profiles: HSP V1.1 (headset profile),HFP V1.0 (handsfree car kit profile), and DUN V1.1(dial-up networking).To ensure interoperability between other devices supportingBluetooth technology, use Nokia approved enhancements forthis model. Check with the manufacturers of other devices todetermine their compatibility with this phone.