Although WiMAX and WiMAX2 are part of the technologies used in wireless Internet communication to offer high-speed internet connection to users, there are still a lot of differences. Some of these differences are basically in terms of their speed, capacity, etc. Out of the two, WiMAX2 offers a higher maximum speed compared to WiMAX.
Unlike WiMAX that offers up to 70Mbps, WiMAX2 offers up to 300mbps. WiMAX only offers up to this if you are close to the link, whereas, with a long distance away from WiMAX2, the connection will still be strong. Another difference is that both use different spectrums. While WiMAX uses a spectrum that ranges from 2.3 GHz to 3.5 GHz, WiMAX2 uses a spectrum that ranges from 5 MHz to 40 MHz. Although, the WiMAX technology is more in use than WiMAX2, the use of WiMAX2 is expected to rise more because it offers more benefits compared to WiMAX.