Microsoft Lumia 640 User Manual page 31

By default, the volume keys control the volume of alarms and reminders.
If you have connected headphones, the volume keys control both ringtone and media volume
at the same time The maximum volume level is 30.
Change the volume for media and apps
Press a volume key, tap
want. The maximum volume level is 30.
Switch to silent mode
Press a volume key, and tap
Tip: If you don't want your phone to vibrate, tap
the start screen, swipe down from the top of the screen, and tap ALL SETTINGS >
ringtones+sounds.
Use your phone in airplane mode
In places where you don't want to make or receive calls, you can still access your music, videos,
and offline games if you switch airplane mode on.
Airplane mode closes connections to the mobile network and turns your device's wireless
features off. Comply with the instructions and safety requirements given by, for example, an
airline, and any applicable laws and regulations. Where allowed, you can connect to a Wi-Fi
network to, for example, browse the internet or turn Bluetooth and NFC sharing on in airplane
mode.
1. On the start screen, swipe down from the top of the screen, and tap ALL SETTINGS >
airplane mode.
2. Switch Status to On
Icons shown on your phone
The status bar at the top of the screen tells you the current time, battery and signal strength,
and much more.
Tip: To see hidden icons, tap the status bar.
Mobile signal strength
Signal strength
Your phone isn't connected to a mobile network.
There is no SIM card in your phone.
© 2015 Microsoft Mobile. All rights reserved.
, and tap the volume bar for media and apps to set the volume you
> . To switch silent mode off, tap
.
.
. To change other sound settings, on
31