Originally Posted by
poit57 Your post seems to be referring to stock software/firmware at the time of release. The two points quoted are null and void once the phones are updated to Windows 10.
Hmm maybe you're right about the camera.
I haven't updated my 640XL to Windows 10 mobile but I've seen less people posting about having issues with Windows 10 mobile on their 640XL. So I'm saying this based on observation, that it's more stable on Windows 10 mobile.
Also I think 640 and 640XL were the first phones to be declared windows 10 mobile ready by Microsoft if I remember correctly.
So they "could" function better than 830 on Windows 10 mobile.