My "New iPad" is 4G LTE and is quite fast, but when I jump onto WiFi and back to cellular data I sometimes have issues where the new iPad "Could not activate cellular data network". My work around for this issues is a reboot of my new iPad which is a royal pain in the butt. The separate LTE toggle on the new 4G iPad seems to be the glitch creating problems where 4G LTE isn't available.
My work location doesn't have 4G LTE, but close to my home I do have access. Is anyone else having trouble with their new iPad connecting to 3G, 4G LTE or WiFi or poor performance?