There's no such thing as "connection speed" on mobile broadband as in synch speed that you have on landline broadband.
Technically with LTE your best equivalent is the number of channels and the width of each channel, and the capability of your user equipment (ie, modem, usb stick, phone etc).
Devices that support upto 150 Mbps generally support 1 channel at a time.
Devices that support upto 300 Mbps generally support 2 channels at a time.
Devices that support upto 450 or faster support 3 channels at a time.
In many areas Three has multiple channels transmitting:
1 x 5 Mhz Band 20
1 x 15 Mhz Band 3
So with a 300Mbps of faster device with 2 channels and "channel aggregation" working, then 20mhz of LTE could be being received. This gives a theoretical maximum.
However mobile broadband is similar to US cable networks, where you share with everyone else connected to the same cell. This is why you want THE best receiver, with the most number of channels aggregated to give you the best capabilities.
Some android phones will show you what is being received in your area. The Cellmapper website often reveals the information from people whom have rooted their Android phones.
80/20 (2/jun/14) at 470m; high sync history: 64/9 (Sep/17), 54/6 (Jan/19), 51/6 (Mar/19), 47/6 (Aug/19)
20 years of broadband from 1999's ntl:cable modem trial - Live BQM
Edited by jchamier (Sat 31-Aug-19 18:20:45)