So. I have looked, And looked. Tried XDA, android central, Google search. No answers. Even called Google about this. I had an HTC incredible s before the n5 running 4.0.4. I would be connected to my WiFi. Mobile data would be off. I would send a MMS. Mobile data would turn on, send the MMS and turn off. All the while WiFi was still on. Now after some search it seems this was a code I'm the framework of sense ROMs. The phone was rooted and running mike1986 ROM. Awsome feature. Fast forward to today. N5 will not let me do this. My wife's moto x is the same issue. Now I understand this is not a huge deal to some but to have to turn off WiFi to send AND receive even the notification of an MMS is annoying. Is there any way to get around this? I have tried 8sms, and another app. Can't remember the name. No luck. Thanks guys!