I have purchased 4 of these phones trying to find one that works because I love this phone. 1 out of 3 work and its the older of the 4...hardware version 2.0.0.0...its the newer ones that don't work. I just got a brand new one and it was bad right out of the box...it is definitely a hardware issue and there is nothing I can do about it. I live in US and this phone is not supported here...so aggravating. anyway, I have the Lumia Phone test app and the restore tool hosted on my file site.
Phone test tool can be downloaded here: https://file.ac/wyYTCLIencQ/
Lumia Restore tool here: https://file.ac/JY7wD_K-nCU/