As has been noted on the forums, when you have your phone's network mode set for LTE/CDMA and you lose service (for example when underground on the subway here in New York City), you will get a pop-up asking you to set your network to Global. If you say cancel, you'll get the pop-up over and over again. It's a significant nuisance for people who regularly lose service like me.
The solve is to accept the pop-up and set your network to Global, but unfortunately, that creates a different issue.
You see, the problem I have is if I keep my network on Global, I'm more prone to lose LTE in New York City and get stuck in 3G. When this happens I need to reboot the phone to get back to LTE. Doing research online and through my own experience, I found that the solve was to choose LTE/CDMA in the network settings, but whenever I'm in the subway, here come the Global Network pop-ups again!
Both issues have shown up in various forums, support rooms, etc, all over the internet, but I have yet to find a total solution. It's either keep it on Global Mode and deal with losing LTE periodically or go to LTE/CDMA mode and remember to go to Airplane mode in the subway.
Joy.
My brother-in-law & wife both have iPhone5s on Verizon and had the same "stuck in 3G" issue in NYC, turning off international mode fixed their issue, but they don't have pop-ups in the subway, of course, that's a "helpful" Samsung add-on.
So there you go. It's unfortunate. I'm really happy with the phone otherwise... Do you have a solution?
