What is 4g it said wifi+4g any suggestions?

4g is a set of technologies that allows a device to access the internet from a wireless signal provided by cell phone towers. So, to a limited extent, with 4G you can access the internet anywhere you get a cell phone signal. Not all cell phone towers have 4G technology installed, so it's mostly limited to areas with denser populations. You can ask whoever sells the 4G to see a map of where you can get on the internet using their service. If you know what Wifi is, think of it as a really long range wifi device that your cell phone or other 4G capable device can access for internet.