>the company had them install a chip Yeah no. As the other posts said below, AT&T has had a history of pushing minor changes in early technology as a new gene

>the company had them install a chip Yeah no. As the other posts said below, AT&T has had a history of pushing minor changes in early technology as a new generation of that technology. The most recent is their 5Ge nonsense. Back in the early 2010's they pushed an update to iOS to change HSPA+ 3G to display as 4G. It's not, but the behavior carried over to other carriers. T-Mobile was closest to being able to argue it as 4G as they deployed DC-HSPA+ which could provide 42mbit in ideal conditions. It's possible that there was something lost in translation between the installer and you that there was a radio component upgrade on the antenna that allowed HSPA+ to be used over the older UMTS and HSPA. Now most towers have the radios and antennas integrated as one component, but on weak towers and older installs the radios and the antennas were separate. I know a bit more about T-Mobile USA, and one of the things they did a few years back to bring up 2G-only regions was get better backhaul in then plug LTE radios into the 2G antennas, making the sites broadcast 2G and LTE on band 2, 1900mhz. Later on they would add band 12 LTE by hooking in an antenna that could be tuned for 700mhz.