I recently bought a dual SIM phone and find that if i try to send a new message to a contact or cell phone number it will not send it. It just sits in a trying to send state. If i send or replay to someone that i have sent to or received from before there are no issues. It seems that the app does not know what the default SIM send account is..
The phone is a Xiaomi Mi 4i running Android 5.0.2
The phone is a Xiaomi Mi 4i running Android 5.0.2