iPhones in Morocco are almost all compatibe with 4G service, specially from iPhone 5.
I have iPhone 6 and 4G is working just as fine as Amen.
You can check some videos on youtube of 5G tests in Japan that intends to launch it in 2020 .. and they are basically testing it on some specific phones, and iPhone 7 is included. Which means it already supported 4G service.
