Coming from the stable of the famous Microsoft, Windows 10 has already taken the path of success but its avatar on mobiles is yet to make a debut. However Microsoft in its innovative effort has provided a great option to its fans to test the preview builds for Windows 10 since the beginning of 2015.
However it is always better to know the options for 'hard reset' and through use of the software for solving any problems as the new Smartphones due to their sleek design have very less buttons (hardware buttons).
At first the preview builds were very buggy but ever since the build 10536 was released, the Windows 10 mobile technical preview builds have acquired more stability. If you use the Windows phones with Windows 10 builds now, you don't feel anymore that you are actually using a preview build. That has been the improvement and we must appreciate Microsoft as well as those scores of insiders who have actually helped Microsoft achieve this as they provide valuable feedback to Microsoft.