The Lumia 640 runs Windows Phone 8.1 with the Lumia Denim update installed. In other words, it has the most up-to-date version of the operating system available. (Microsoft has said the 640 can be ...

There was a time that 5-inch 720p HD screens were a luxury available only on the priciest flagships. Now you can get one for $130. The Lumia 640's screen is great, especially at this price point.

TechSpot means tech analysis and advice you can trust. When you buy through our links, we may earn a commission. TL;DR: If you're looking for a powerful productivity suite without recurring ...

Ryan Downie has 9+ years of equity research, financial consulting, and business ownership. He has 500+ published equity research works. Katrina Ávila Munichiello is an experienced editor, writer, fact ...