Router is connected to 4g EE network with good speeds. On the front panel the 4g+ indicator light is not on. What is 4g+, and should this light be on when connected to 4g

Model : Hardware Version : Firmware Version : ISP : Hi I have an Archer VR2600 [FONT=verdana][/FONT]Firmware Version:1.4.0 0.8.0 v0050.0 Build 160518 Rel.50944n I am trying to use an Apple TV Generati