Hello to all!!! I’m glad to be part of the community . I have a x3 and find it very nice although a little limited in no sim software. when i use bluetooth connection does not use data from the phone, so is it for you? there is a way to use the phone’s data without tethering wifi ?thanks a lot and sorry for my english 
wifi it is ok, but for usage battery i like only bluetooth on for notifications and data. with other smartwatch in bluetooth connection i had also internet… Ps in my phone in bluetooth setting there are not other options 