JioFi blue light means – Basically, all Jio WiFi routers have three different colors of lights to show you signal status. Lets first understand them including JioFi blue light means.Red light: JioFi red signal shows poor signal or no SIM. If red signal blinks fast then it means there is no SIM inside the device or if there’s then it is not inserted properly. Similarly, if red signal blinks slowly then it shows JioFi is getting no signal or very poor signal strength. JioFi blue light means: JioFi blue light means device is getting medium signal which will end up with low internet speed. Green light: Green indicator reflects good signal strength which means JioFi will be able to provide your optimum internet speed.