windows 10 mobile upgrade

How to upgrade Windows 10 Mobile for supported Windows Phone 8.1 models
for those who are using windows phone 8.1, you can completely upgrade your phone to microsoft windows 10 mobile market, to enjoy the new features that this version brings.
Instructions for recording calls on Windows 10 Mobile
for new devices with windows 10 mobile pre-installed in the device, the call recording feature can be used immediately. users can record both with outgoing and received calls.