Internet is a very good companion and every possible gadget. First you decide whether you want a internet connection at home or when you want to travel.
POCKET WIFI ROUTER:- This is a portable small sized wifi router it looks like a credit card and very easy to carry every where. when your travelling it is best to buy a wifi router and get a connectivity, just create a hotspot so that you coneect multiple devices.
Main points to keep in mind when buying a wifi router is
1)Data plans:- Check the data plans offered by the internet service provider.
2)Locked or unlocked:- This is very important to know when your buying a wifi router. If you buy a cheap device then there is possibility that the router is locked to a service provider. where you will not be able to use it with any other service providers. If you buy a unlocked device then you can shange the service provider whenever you want.
3) Number of devices you want to connect:- Whenever you buy a wifi router check how many devices you want to connect. normally it alows 5 devices. suppose if you want to connect more number of devices then it is better to go for higher connections.
4) compatibility with your service provider:- Check whether the service provider which your buying has a coverage to your area and whether it is compatible to your sim, usb datacard.
5)3G/4G Data Card support:- check the speed of the wifi router
7) Wifi router which has a inbuilt poerful battery
8)Quick start:- Check whether the wifi router boots up quickly .
9)Mobile wifi app to manage the support and connections.
10) Check whether it has USB 2.0 Ports. This is all about the wifi router so it is best to buy a wifi router than a dongler, because as most of them have written it is specified to use only for one person at a time and seems to be costlier. even the speed is not as fast as wifi.. Hope my few information would solve your confusion