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Dial using numbers or letters
When you type a letter in a phone number, your BlackBerry smartphone dials the number that's associated with the letter on a
conventional phone keypad.
• To type a number, press a number key.
• To type a letter, press and hold the Alt key. Press the letter key.
Switch applications during a call
During a call, press the key > Switch Application.
Note: If you switch to a different application and you want to end the call, press the key.
About using a headset
You can purchase an optional headset to use with your BlackBerry smartphone.
If you use a headset, you can use a headset button to answer or end a call, or to turn on or turn off mute during a call.
Depending on your smartphone model, you might be able to use a headset button to make a call using a voice command.
Depending on your headset, you might also be able to use a headset button to pause, resume, skip, or adjust the volume of
audio or video files.
For more information about using the headset, see the documentation that came with your headset.
Emergency calls
About emergency calls and Emergency Callback Mode
If you're outside of a wireless coverage area and the indicator appears at the top of the screen, you can call only
emergency numbers. Your BlackBerry smartphone is designed to allow emergency calls even when your smartphone is locked.
Depending on your smartphone model and the wireless network that your smartphone is connected to, your smartphone is
also designed to allow emergency calls when the SIM card isn't inserted. If the connection to the wireless network is turned off
when you initiate an emergency call, your smartphone is designed to connect to the wireless network automatically. You can
make emergency calls by typing only official emergency access numbers (for example, 911 or 112).
Note: You should not rely on any wireless smartphone for essential communications, including medical emergencies.
Emergency numbers may vary by location and emergency calls may be blocked or impeded by network, environmental, or
interference issues.
If your smartphone is connected to a CDMA network, when you end an emergency call, your smartphone enters Emergency
Callback Mode. This mode allows the operator to call you back or find your approximate location. Depending on your wireless
service provider, Emergency Callback Mode is active for 5 minutes or until you make a non-emergency call. In Emergency
Callback Mode, you can't send and receive messages or browse webpages.
If your smartphone supports GPS and you make an emergency call, an emergency operator might be able to use GPS
technology to find your approximate location.
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