I have switched to Jio for the past 6 months. I am really happy with it.Even when traveling by train the network is strong . I can listen to songs on YouTube without buffering.Its portable. It can be connected to more than 1 device. I will highly recommend this product. You have to charge it once the red button flashes.This is better than the other service providers. I used to get exorbitant bills especially when traveling out of Mumbai.