I am having an annoying problem on my Galaxy Note 3. For whatever reason, MMS will not send/receive on my WiFi network, but as soon as I turn off WiFi and connect to my carrier's network (T-Mobile) it works. It used to work on WiFi just fine, and we did not make any changes to our network when this started. I have had this phone for about a year and 3 months (it is preowned). Any suggestions? I have rooted this phone (Kingo), but the problems started before I rooted.