Re: Cant send videos via text. Some unsupported file message
We have information on quick fixes for photo and video attachments. Keep in mind that if the text uses more than 1MB then it isn't supported as that's the upper limit with us. If everything appears fine, then use our Troubleshoot & Resolve Tool. Sign into your account for more personalized assistance and pick your device type. Under Select your issue and Service/network issues, click on Messaging and follow the steps provided.
Have a great week!
James, AT&T Community Specialist
Need help? Ask a question to get help from the AT&T Community or support from AT&T specialists. If this reply helped you please use Accept solution to mark it as an Accepted Solution.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.