I think we are misunderstood here:
The thing is B1+B3 is met in the current table (product specification r6, february 2018). We bought the product because of this information.
The module is actually useable on this frequencies, it can connect to the mobile-operator and sends traffic, but has a faulty connection, where most of the time not all streams (should be 2 per band) are sending/received properly. Instead the module ignores some, which results in lower bandwith and higher pings than it could be.
This is clearly a firmware-bug, because on some rare and random moments the module is operating as it should.
So we ask you to help us out here by fixing this problem. (again: it is a definitely a bug because it is supported by the modules’ specification and it is usable but in a faulty way.)
This is not about a feature-request - this is a bug-report! We are here and can provide data if you need that, but please guide us to a solution. Otherwise it could be seen as maliciously secretive lack.
This thread opened in december. Three month later a solution is not anywhere near in prospect. Ignoring the users problems and saying things like “the chip set does what it does” is not acceptable for a trustworthy company like sierra.