I have this phone, and it is great! But, I am thinking about updating it to Windows 10, does someone have experience with updating Lumia 640 XL from Windows 8.1. to Windows 10? Help me.Since the upgrade to 10, two versions have been updated. It’s going better, but to lazy, Anniversary major update if is again bugged I will through set new dustbin. No resale No upgrade proper No not modelsIts agood phone but so slow espicially in internet.is there any program to make it faster.