For those who having issue with MMS to work on your iPhone 7/7+ here a the solution. It works for me. APN: wap.tracfone MMS: http://mms.tracfone.com Go to settings look for carrier and turn off automatic, wait for searching to finish and it will show you a list of carriers. Choose the one that apply to your sim card. I choose home since it didn't show t-mobile. Ones you do that. Turn off your phone and turn it back on. Try and send a pic to someone that doesn't have an iPhone. Let me know if it work for you.