Hi. I have a Samsung S6 running Android 5.0.1 on a Koodo prepaid account. My friend has an iPhone 4s on Rogers prepaid. I can successful send him an MMS. If he tries to send me an MMS I get a notification that the message was not received. I have Network node set to GSM/HSPA/LTE (auto connect). My APN settings appear to be correct based on what I've read in the other posts.