Will an Iphone 13 bought in America work in South Africa

Hi

I am looking into buying an unlocked Iphone 13 from the USA and using it in America. According to the Apple website, 'the 4G/LTE frequencies will not be the same, so you may be unable to receive a 4G service in South Africa on a US purchased iPhone'. However, this was posted in 2013.

Will I not be able to receive LTE service in South Africa?

What does this mean for my data and internet connection?