
AT&T PREPAID
Learn how to manage your AT&T PREPAID account, sign up for AutoPay, reset your password & more!
Wireless Account & Billing
Features & Services
Phones & Devices
AT&T PREPAID
Learn how to setup or fix your device with step-by-step help.
Learn how to manage your AT&T PREPAID account, sign up for AutoPay, reset your password & more!
Gift your grad endless possibilities and connect them to their brightest future.
Hello I am trying to send a text to a number to opt in to receiving notifications about a program and it won't send the message. It keeps saying it failed. It is not just this number. I have tried to reply to drs offices automated texts to confirm appointments and it doesn't send. How do i fix th
Questions
•
Features & Services
9
1
0
Accepted Solution
Official Solution
Hey, so my friend got a Galaxy s6 edge yesterday and gave me his new number. When I tried texting it I received this immediately after:Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code. HeyI can receive messages from this number as well as calls. I've beco
Questions