Hi angie_52156. Are you sure you are not receiving text messages?
If you aren't sure, try sending a message to your self and ask someone to send you a message.
If you are, here are some reasons why you cannot receive a text message:
1. Do you have texting set up on your carrier's cell plan? If you don't, texting service will not work.
2. Are you not able to send/receive text messages with one person? The problem could be related to the other person's device and they may need to contact their service provider.
3. The sender is using an outside-the-United State device.
4. The sender is using a website to send you a text message.
5. Network issues
If the problem persists, try the device specific troubleshooting steps or you could contact the store where you originally purchased the device. Good luck.