I have a Huawei Honor with Android 4.0.3. I got a plan at AT&T that includes 200 messages (both SMS and MMS) per month. Unfortunately I can neither receive nor send MMS. When I receive one, there's a download-button. But when I hit download it doesn't do anything, even when I got internet connection via wifi. When I try to send a MMS it only says "sending...", but nothing happens. My guess is that I didn't configure the settings correctly, but I couldn't find anything useful online. Also I don't have a single APN. Maybe I need to create one? Thanks for your help!