I bought my Note8 from Samsung with T-Mobile activated on it last year. At the begining of the month I ported over to Total Wireless and subsequently unlocked the phone using T-Mobile's unlock app. Now that I'm over at Total Wireless I'm having issues using 4G and MMS features. APNsettings.com gives some settings that will enable 4G connection but MMS is still wishy-washey. I've seen some suggestions on XDA to flash Verizon's firmware onto my phone, but I was hoping someone had a safer idea.