OnePlus 2: connectionproproblems will be fixed with an update
The OnePlus 2 connectionproProblems with mobile communications are to be resolved with an update from OnePlus. The successors haven't had any yet Proproblem with the connection, so the OnePlus 3 and 3T will not receive an update.
The Chinese company announced in official forum indicated that the update would be on its way to the owners. It would take a few days before everyone could install the update. OnePlus is known to be quick when it comes to updates and general software updates, which is why the whole thing should not take longer than two weeks. But that's just a guess!
Oxygen OS 3.5.6 is a reinforcement patch
The update version called 3.5.6 only patches that Proproblem with the connectionsprotrouble, but that Proproblem with the IMEI number or the Google security updates is still there. The IMEI number is no longer accessible, but this could help support. OnePlus itself knows about this one Problem and says to take care of this Proproblem would take care of.