Any smartphone cannot work forever. This rule also applies to mobile device lumia 640. Of course, modern smartphones are very powerful and work without bugs. However, sometimes it happens that smartphone begin to work very slowly, or even worse, it does not turn on at all. As you know, smartphones do not have a reset button, unlike computers. Even if you remove the battery, you still do not return your phone to factory settings. The ideal solution is to hard reset windows phone lumia 640. Hard reset allows you to quickly remove the pattern, or password that you have forgotten. So you … [Read more...] about Hard reset Windows Phone Lumia 640