Microsoft Lumia 640 - Perform a master reset via hardware

Nokia 7. Classic phones. Nokia 3G All phones Accessories. United States - English. Customer support. Popular topics. What should I do? How can I close an app that has stopped working? How are software updates delivered to my Nokia smartphone? Where can I get support for my Lumia smartphone? Why does my phone feel warm when it's charging or when I'm using it? Will my Nokia smartphone receive security updates? Can I remove the back cover or battery from my Nokia 3?

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Hard Reset NOKIA Lumia 800

How can I use my Nokia device as a WiFi hotspot? How can I cast my phone's display to another screen? How do I use the NFC feature? When will my phone get the latest security patch update? How can I install available updates?

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How to Reset a Nokia Lumia 10 Steps (with Pictures) - wikiHow

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The Zune Content Reset

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