Unfortunately on most devices you can't. On routers you can use tools to help force a specific band but not necessarily whether ca or mimo should be used which is a bit dissapointing though. Would have loved to test performance in 4x4 mimo vs 2ca. I'm pretty sure Telkom is doing 4x4 mimo on b40.
Look at the Telkom tower and then look at the sector antennas. There are a lot of plugs going into those sector antennas.