Verizon Wireless Website shows the 6620L is NOT compatible with XLTE, however the specs show it is available on LTE Band 13 (700 Mhz) and LTE Band 4 (1700 Mhz). These are the same bands that the MHS291L operates on which IS XLTE compatible. Furthermore, PC Magazine says a software update in 2015 will make the 6620L compatible on Band 2, the only Jetpack capable of this - and even claims it is XLTE compatible. So why does Verizon Wireless indicates this in NOT XLTE compatible?
Verizon Jetpack MiFi 6620L Review & Rating | PCMag.com