Hello Everyone...
I just want to tell that Alcatel L850 4G modem is recognized as LTE interface in 6.27 ROS (the one I have tested). It works fine but it is needed to configure the modem via its web interface to connect automatically. On every reboot settings in the LTE interface are lost but this doesn't mater as long as the modem has the right settings. Adding DHCP client on LTE interface is neccessary. Here are some specifications of it:
Data Rate: LTE Downlink 150Mbps, Uplink 50Mbps
4G Bands: LTE FDD 800/900/1800/2100/2600MHz(Band 20,8,3,1,7 )
3G Bands: UMTS 900/1800/2100 MHz (Band 8,3,1)
2G : 850/900/1800/1900MHz
Best Regards.