Message Delivery
22 articles
Short Code Provisioning Moratoriums
Why did I receive a 4750 messaging error?
Why did I receive a 4720 messaging error?
Why did I get a 9902 or 902 error for SMS?
How do I resolve the delivery failure error code 4452?
How do I opt out of A2P traffic as a T-Mobile subscriber?
Why did I not receive a 2FA message on my Bandwidth number?
How can I investigate my Bandwidth messages using Search and Logs?
Why can't I send or receive messages from an iPhone?
MM4 error codes
Requesting MMS Delivery Receipts for MM4 users
How do I enable MMS Delivery Receipts when sending messages?
Are delivery receipts available for international destinations?
Messaging deliverability FAQ
Is delivery 100% guaranteed?
Can I get Delivery Receipts for MMS messages?
Does Bandwidth retry HTTP messaging callbacks if my callback URL isn't reachable?
What do I need to do to ensure my messages don’t get blocked?
How can I tell if my messages are being blocked?
What should I do if my messages are being blocked?
SMPP SMS delivery receipts and error codes
Delivery Receipt (DLR) FAQs