In todays world internet is as important as other household things and it must be fast . Currently 4G is the best service available, you can use 4G service with new cellphone supporting 4G sim or hotspot wifi service and the best wifi is Reliance JioFi available in the market. It allows 10 devices+ 1 USB connection. Price is also very less in comparison to buying new 4G cellphone. Internet speed under 4G technology is best and its really reliable all you have to do is just insert battery and Jio sim in JioFi device and turn on the device. Connect to the Wifi available from your smartphone or laptop and connect with password and you are done start enjoying 4G speed and best part is you get 24x7 support and service.