So everything I've read indicates that the 7 Pro is Dual SIM Standby. However a rep at OnePlus assured me that it is Dual SIM Active and couldn't figure out why I couldn't send or receive MMS messages from either SIM no matter which one was set to active. He escalated my case to the higher tech support to try to resolve. Is he indeed wrong or is the 7 Pro really Dual SIM Active? And if he is wrong and the device is Dual SIM Standby, is there a firmware or kernel mod that will enable both SIMs active?