Originally Posted by ljbad4life
No one has asked you this, but is the number you are trying to receive mms on a google voice number? if so only sprint (i think) users can send you mms. tmobile is coming soon while att and verizon users are a no go.
No it is not a Google Voice number.
I think it is a defective Nexus 5. I took it to the AT&T store today and the manager was trying to get it working for almost an hour. He tried various different APN settings and a new SIM card. After that wouldn't work, he took the SIM out of my phone and put it in his HTC One and it sent an MMS just fine.
Also, whenever I try and send an MMS, it will not work at first. If I restart my phone, it will send the MMS within the first 30 seconds or so after rebooting. After that first 30 seconds of the phone being on, it will not send pictures or any MMS. I don't know how, but it looks like it is a defective unit.