3G was the first network that brought the internet and text messages to your cellphones. One of the first iPhones was 3G's. Now, starting Tuesday 3G service will be completely shut down leaving some with no service for their phones. If you have an iPhone 5 or older, you will need a new phone.
This unfortunately also affects businesses and government services which have not switched off 3G service like ankle monitors, alarm systems, school buses, Life Line, etc. Unfortunately, some businesses have not been able to make the switch in time due to the pandemic. Well see how this goes!