Help!!! SOS!! Cant make calls and send out text messages

Can't send SMS text but can receive and can mak... ' T-Mobile Support

https://support.t-mobile.com/thread/58801?tstart=0

T?Mobile US, Inc.Feb 24, 2015 - hi ! i really need help ! i can't send SMS text but I can receive . i can also make a call . i tried: turning it off then on . both the device and the. Can't send text or sms messages on my galaxy s4 ' T-Mobile Support
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How to fix Samsung Galaxy S4 that can't receive text ...

This could only be caused by a couple of things. The message center number in the handset may not be correct, which will cause the messages to fail. The other possibility is that the feature is not active on your account with your wireless provider. What you need to do is test a couple of things. See if you can send a text/sms message to yourself, in doing this you can verify that you can not only send, but receive text/sms messages. If you cannot send, or receive text/sms messages, then that verifies that the message/service center number is off, and will need to be corrected. If that works, and you can receive text/sms messages, then your service center number is correct, and you will move to the next troubleshooting step, which is to test your web browser. If you cannot launch the web browser on your handset, then this is an issue, because the MMS service requires that you have both SMS, and web browser service to send a MMS message. If you can access the internet and you have the ability to send/receive text/sms, then you need to call your service provider as the issue may be with their service.

check ur phone settings if your firewall state is on it should be off click call firewall state off,sms firewall state off.try n let me know

This issue only occurs when trying to send a SMS text message from within the call details screen of a call in the call log.
To avoid this issue, complete the following steps to send a SMS text message from the call log screen:

1. Open the Phone application.
2. Open the Call Log by clicking the middle button in the toolbar.
3. Touch the call log/contact in the list without clicking the screen.
4. Display the menu, then select SMS Text (Name/Number).
5. If required, rotate the BlackBerry smartphone to switch to landscape mode.

I HAVE THE SAME PROBLEM I HAVE AN ORANGE SIM AND A TESCO MOBILE SIM BUT CANT CALL OR SEND TXTS I CAN RECIVE TXTS AND CALLS
EEEP HELP

try to update or re-install software of ur phone.
but first back up ur phone by using sofware called,"My phone explorer.". because wen u will reinstall the software at that time ur phone memory will be formatted including ur phone book and sms.

First you need to get into your phones setting, then touch the pannel for text messages and click get settings.

After you are in your settings there will be a pannel to put in your voice mail and text message number.

You then must go kill your self

hi there,
you sim card does not work the phone or the phone might lock with other provider-- try to turn off the phone - take out the battery and sim card - wait for 30 sec - put the sim card then the battery in - wait for 30 sec - turn on the mobile .. i hope you will able to make calls now.

sms thing... go to message settings - look for message center number if there is then it will be ok when you restart your phone but if you didnt find it call custoer service and ask the message center number. get it write it and you are ready to seend messages.

Best of luck.

There is message setting menu in main menu, and you have selected MMS. You have to change the setting to SMS and it will allow you to send text.

message icon select, options select, scroll down to bottom and make sure they are in separate, menu save.