Microsoft Lumia 640 XL LTE User Manual page 63

If you want to be able to silence your phone by turning it face down, the Flip to silence feature
must be switched on. On the start screen, swipe down from the top of the screen, tap ALL
SETTINGS > audio, swipe left, if needed, and switch Flip to silence to On
When someone calls you, press the volume key or the lock key. You can also turn your phone
face down.
Reply to a call by a text message
If you can't speak right now, you can reply to the caller by a text message.
1. When someone calls you, tap TEXT REPLY.
2. Tap type a message..., and write your message.
You can only reply by a text message to calls from the contacts saved in your phone.
Switch text reply on or off
Tap > > settings, and switch Text reply to On
Edit a pre-written text message
Tap > > settings > edit replies, and edit the reply you want.
Make a conference call
Your phone supports conference calls between 2 or more people. The maximum number of
participants can vary, depending on your network service provider.
1. Make a call to the first person.
2. To make a call to another person, tap
3. When the new call is answered, tap .
To add more people, tap
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