This device is in little size which comes in the blue colour box in this box you will get a charger one cable one user manual and a battery which rating is 2300mah.
The best part of the device is you can use it with 3g or 2g phones. For data calling and messeging.
In tbis device you can insert a jio sim and sd card upto 32 gb. After that you have to connect your device with your phone and download jio4gvoice app and after configuration you will get an otp on your registered mobile number put that and then you are ready to use for calls and messeging.
Its range is awesome upto 25 meter
At once u can connet 32 devie at a time
A 2300. Ah battery powered device will give you a whole day backup.
Its takes upto 2 hours to get full charged
If cant afford a 4g phone and you u have a 3g phone then this is for you.
If your family bigger then you can buy this for your family.