This is a "device to catch IMSIs", but the thing commonly called an IMSI catcher is much more than that - those are entire fake cells that MitM the traffic and

This is a "device to catch IMSIs", but the thing commonly called an IMSI catcher is much more than that - those are entire fake cells that MitM the traffic and can actually intercept calls. This device can't do that, making the title highly misleading.