How to remove add button from a grid on a form that is connected to the different entity in CRM? Here is the picture. Account entity is connected to the Case entity.
This + sign:
After month and a half of working on this issue I have finally got response from the Microsoft CRM support, removal of the sub-grid (+) button in not supported by this version of the mobile application. Only way to remove it is to disable the sub-grid on the mobile phone. I hope that this will help someone in the future not to waste time.