Driving around my neighborhood, my daughter was unable to surf the web with satisfactory results. Near my home, in a rural suburb about 20 minutes from a 4G metro area, my signal was dismal. I had mixed results over a three week period. Ultimately, the important detail seems to be that purple indicates a 3G signal, green signifies 4G signal, and flashing between the two colors probably means there's a 1x network connection. It took me awhile to figure out exactly what it was trying to convey as it went through a veritable rainbow of LED displays. For that extra heft, the 4G LTE Mobile Hotspot has a graphic display that shows your signal strength and battery life, which is a very nice touch.ĭespite the detailed graphic display, the 4G MiFi indicates what kind of signal it has by changing the color of the blinking LED on the side of the device. However, the MiFi 4510L is about twice as thick as the 2200. The device has a very polished look and feels high quality in the hand, whereas the 2200 felt kind of cheap and flimsy. The first thing I noticed is that the 4G LTE Mobile Hotspot MiFi has a much better build quality than the various 3G MiFi 2200 devices that came before it. My demo unit was already assembled and activated when I took possession of the device. The 4G LTE Mobile Hotspot uses a SIM card. It also travelled with me on a two-day business trip to Cincinnati, and then accompanied my family on a drive from North East Ohio to Chicago and back again. I took it camping in the relatively remote tri-state corner of Pennsylvania, Ohio, and West Virgina. I did a lot of travel during this period, so I really put the device through its paces. I recently spent a few weeks with the new Verizon 4G LTE Mobile Hotspot MiFi 4510L.