Rail WiFi is a great concept placed by government it is very very useful for local public the best part of this WiFi is that this WiFi is totally free of cost so any one can use it and also it is not necessary to have a 4g supported phone to use this WiFi I m very thank full to rail WiFi for giving us such a great facility and advancement in our life. We can join this WiFi by entering an otp code provided via message and start using such a great facalitu