Surpressing the SMS pop up box .....
 

How can I do this ????
I have a custom rom installed and I think I forgot to do something.

Any help is appreciated.

Re: Surpressing the SMS pop up box .....
 

Try this, go to start/settings/personal/sounds and notifications. Click notifications, event: new text message, and un-check display message on screen. That should do it for you.

Re: Surpressing the SMS pop up box .....
 

unless you are referring to the 'message sent' notification..
here is the regedit to disable it ->

HKLM\Software\Microsoft\Inbox
Create a new key called - Settings
add DWORD - SMSNoSentMsg with a value of 1