ReliNce JioFi is useful device for which have not 4g mobiles. It is device which contain a jio sim has capibility of like wifi . The password is set on it. Sim issues on id of jiofi holder id proof. The speed of internet is very fast due to jio 4g. Connection is also very good realible. But jiofi is not avialble to make calls . Its only for internet processing . Its has been charged to use it. It is very small and lighg weighted it carry anywhere because of its connection is realible and enough strong. Its make jio avialble for all android handset user