Originally Posted by strausd
Did you get a new SIM after getting your Nexus 5? Which APN are you using? Did you have to call them and tell them your IMEI? Do you have LTE as your preferred network?
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.