07-06-2013 06:27 AM
Click on the text messaging icon and press the overflow menu (lower-right - three dots) when the menu pops up you will see 'Settings' Click that then choose 'text'. At the bottom of that page is an 'advanced' option which you should then click on. In there you will see your smsc number. You may have to Google the correct one for your carrier (and particular service) or check to see if the associated settings are correct for your carrier also.