+1 Every phone I've had for the last four years or so had the ability to create a Wi-Fi hotspot. It actually works really well.If you already have a cell phone you may already have a hotspot on it, depending on your plan. If not, adding a hotspot to your plan may be cheaper that adding it to your car. Worth investigating.
Not true - it will work only if the phone is not SIM-locked to AT&T (e.g. an unlocked phone). I'm pretty sure the eSIM in the Volt is locked to AT&T. In addition, AT&T and T-Mobile operate on different LTE bands so there is no guarantee the Volt cell could even connect to the T-Mobile network.Yes I have hot spot on my phone . But as others have said there are times when the car and antenna will receive better service .
That said att use GSM as does T-Mobile and nearly all the rest of the world. Any att phone can be brought to T-Mobile service by changing SIM card. .So as I understand there are no SIM cards in the volt but some sort of hardware version of imei which if I am correct belongs to me as owner and I should be able to buy whatever service I choose , it seems a bit unfair gm would lock in only one service for data .