"carrier ATT" wi-fi - is it a hot spot or data?
In NYC - ATT have set up a mesh of wifi routers to help with phone congestion. When walking, the device will 'seamlessly' change from LTE to Wi-fi (name of network - ATT Carrier) and then as you walk, it moves to another router or back to a tower.
comment: first - this transition is not smooth - sometimes as you walk further away from a router, the signal weakens to the point there is no data transmission, but you are still connected, there are a few blank seconds before this cuts off and handover happens presenting data blackout spots.
question: when a user is on the wifi network "ATT Carrier" - is this billed as part of your dataplan - in otherwords, ATT sees this as part of their data backbone and because they transition you, ATT still considers it part of your monthly data allocation - or is it considered wifi data and as such a courtesy that is NOT included in your data usage. (note: My plan does NOT have hotspot access).