getting blank texts from an unknown number

You may want to reach out to your carrier and have them pull up the info on your account to determine whether there is content in the messages, or if someone is just spamming you.

getting blank texts from an unknown number

Gee. That's nice. Good for you. do you have a question you would like to ask?

Have you contactd your wireless carrier since this has this has nothing to do with your phone.