In reply to a post by john_32:

We had nothing but problems with External Antennae and the associated cabling, the connectors are delicate and the losses significant.

Yes, the frequencies are high and so connectors and cabling are critical. The challanges with all-in-one units was many had not been updated in years. Cat 4 or even Cat 6 LTE just doesn't cut the mustard 10 years later.

We migrated most of our installs to Zyxel and have been using their 5G unit for 3+ years now, from memory that is LTE Cat 19

But horses for courses, we also have sites still using LTE CAT6 and proving a solid connection.

I see Mikrotik have gone 5G, will be interested to try one, especially the eSIM functionality which could be a game changer.

In reply to a post by john_32:

We migrated most of our installs to Zyxel and have been using their 5G unit for 3+ years now, from memory that is LTE Cat 19

Is the Zyxel unit able to be mounted high up on a pole? Could be a game changer.

I see Mikrotik have gone 5G, will be interested to try one, especially the eSIM functionality which could be a game changer.

It was the Mikrotik pole mounted unit that was Cat 4 for years, good to know they've upgraded.

Cat 6 has to be a bare minimum, and as Qualcomm showed you want everyone to move up to the highest they can, and even the older kit gets better performance.

I have just reviewed, I would look at Three and EE

EE does look to have more capacity and faster bands if 4/5G modem supports

To be honest I would look at a bonded sim one on EE and one on a Three.
Reasons for this are, benefits of failover and utilizing more bandwidth.

Just remember that you need a data sim that supports routers, EE and Three often have fair use policies and I have seen them be enforced for "improper" use.