I am really upset that MMS and other functions are not working on WiFi on this phone... I NEVER went over my data usage, but this month , which is the first month I have my new phone, I am going over my data, which means I have to switch to a higher data plan because I cant use WiFi the way I used to. This isnt fair... I am stuck paying more money because the phone I bought cant function the way I need it to over WiFi.... Is Verizon planning on waiving data charges because of this??? This is COMPLETELY unfair.... please contact me and review my records... you will see that I never came close to using all my data and I just got this phone and this is my first bill with the S4 and I am going to over my limit....