As prolific as free Wi-Fi has gotten it seems like somehow when you most needed, it’s not available or may be the problem is that you just often find yourself needing to use your laptop out of middle in nowhere. Fortunately most Smartphone’s and cellular enabled tablets these days support “Tethering”. Tethering is the act of routing your phone or tablet’s cellular data to another cellular device, such as a laptop. Tethering can be accomplished via USB(read about Type-C port) or even wirelessly which effectively turn your phone into a personal Wi-Fi hotspot. So how do you make this happen? Well assuming you got a strong cellular signal, you can enable tethering in ios simply by going into the setting tab and enabling the personal hotspot option. On android, you go to the wireless and network settings, tap more and you will find tethering and portable hotspot. If you are tethering with USB you might need to connect your cable before some of the relevant option will become available, but if you are using Wi-Fi a bit of additional setup is still required. Just like a home router you will require to enter a name, SSID and optionally a password though I would definitely recommend you doing this and securing your connection.
You can also tether via Bluetooth but due to its low maximum speed I would recommend against it useless you have no other choice for some reason. Once you follow these steps and connect it to your hotspot on your second device via the usual process you are pretty much good to go. But tethering do come with a few caveats, the most obvious being you are going to limited by how fast your cellular network is and all LTE connection that can go to a 100 megabits per second or more are becoming common place these days, your real speed might top out far below what you are used to at home. You also might be fighting data limits imposed by your service provider. You would probably also need a portable power bank if you plan to use portable hotspot for a lengthy period of time as pushing all your data through your phone will drain its battery quickly especially if you are doing it over Wi-Fi. It is really inconvenient if you are struck somewhere and you phone is only conduit to the outside world.