I bought a new Lumia 640 XL LTE and after inserting SIM, I am able to call and receive SMS but not able to send text messages. Can anyone suggest what might be the issue and do I need to change any settings for that?

Software Version: Windows Phone 8.1 Update 2
OS Version: 8.10.15148.160

  • Do you get an error message? Have you been able to try the SIM in a different phone? Can you get your service provider to push the service centre settings to you?
    – Rowland Shaw
    Nov 19 '15 at 8:57
  • No I don't get error message. Also, i got settings from my service provider. But i have not tried to check same on different phone Nov 19 '15 at 10:43
  • Can you try sending an MMS (like, send a photo message) instead? In theory, MMS shouldn't work if SMS isn't working, but in theory if you can make calls over a digital network (and modern phones don't support anything but digital) then you should be able to send SMS.
    – CBHacking
    Mar 27 '16 at 21:35

Not everyone is facing this type of problem.Can not receive or send text message,then check your messaging setting and, if you don't get your problem solved, then do upgrade/update your phone.Then you should able to send new message, from the new messaging app.

  • 2
    The issue has been resolved. I registered a complaint against my network provider and they did reset the SMS settings and it started working. Mar 28 '16 at 9:39

I could receive but not send texts on Lumia 640. Resolved "problem" by turning completely OFF...waiting...then turning back on. A tech told me it's good to turn COMPLETELY OFF every few days, if you customarily have phone ON most of the time.

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