It’s well and truly curtains for 3G, one of the key technologies that helped usher in the age of the smartphone. Throughout December, Verizon has been disconnecting its customers who were still using the tech, cutting off their phones’ ability to use data, make calls, and send texts. It was the last major US carrier to do so — AT&T turned off its 3G service in February, and T-Mobile started winding its old networks down the month after.
Verizon customers with 3G devices have had plenty…