Usually this happens when you modify your Android OS and install a custom ROM. Mostly because you have subscribed to Visual Voice Mail and custom ROMS don't support the visual voice mail app.
Receiving an unknown text can certainly be alarming. Help is our middle name & you've come to the right place! When did these texts start to come to your phone? Had you installed/downloaded any new apps to the phone around the time that you started receiving these texts? What make & model phone do you have?
Follow us on Twitter @VZWSupport
If my response answered your question please click the �Correct Answer� button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!
Due to the age of this thread, it will be locked in order to keep discussions current. If you have the same or a similar question/issue we invite you to start a new thread on the topic.