I recently purchased a Galaxy S4 and have been having difficulties receiving MMS. I use the Textra app but was also having difficulties with the default messenger. It allows me to send MMS but often sends multiples of the same image to the recipient. Whenever someone sends me something, it says "Cannot retrieve MMS..." and something about APN settings. MMSC: http://aliasredirect.net/proxy/koodo/mmsc
MMS Proxy: 184.108.40.206 MMS Proxy Port: 80 Please help!