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Device guides for
Microsoft Lumia 640
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Installing YouTube on my mobile phone
Calling my voicemail
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Getting started
Basic functions
Calls and contacts
Messaging
Office and leisure
Connectivity
Global online services
Troubleshooting
Specifications
First use
Inserting SIM and battery into my mobile phone
Inserting a memory card into my mobile phone
Charging the battery for my mobile phone
Turning my mobile phone on and off
Activating a Microsoft account on my mobile phone
Using my mobile phone
Guide to keys and sockets on my mobile phone
Writing text on my mobile phone
List of display icons
Turning the screen lock on my mobile phone on or off
Restarting my mobile phone