Originally Posted by .iKnowRight.
Its just shows the circle thing that means loading. Now I tried Hangouts and its working. I CAN send sms using hangouts. But in normal messaging apps its not
are you using the Smileys if yes it will convert to MMS
so you will have to make sure you are using Android smiles by pressing Options and then select add smiley instead of directly selecting the smiley button.