I recently switched from iPhone 4 to a Galaxy S4 and 75% of the time I cannot send an MMS message to persons on iOS. I can send and receive MMS messages from any other android device just fine, but not iOS. If I restart my phone it sometimes work (but not always). If I turn off WiFi it sometimes works (but not always). If my girlfriend turns her iPhone 5 on and off it sometimes works (but not always). Some persons with iPhones had no issues sending a receiving MMS messages with me when I first got the phone but now I'm having issues with those contacts as well. I read a similar discussion where the person just couldn't send MMS messages but they could receive them. I can usually do neither send or receive. I haven't found one trick to getting it to work. My mobile network is already set to LTE and not global like many of the other phones having this issue.
Please advise me on how to fix this issue!
Thanks,
julstad