How to Use Android Phone as Broadband | USB Tethering
Before we start, you must have a working internet connection from your android device. It does not matter if it is a prepaid or postpaid plan as long as you can connect to the internet. Take note that all restrictions from your ISP will still be your restrictions when sharing your connection after this method.
There will be 2 working methods on how to use your android phone as broadband or USB Tethering. First method is by using the built in feature of your device which is good for normal users and another one is by downloading a third-party apps from Google Play Store which allows you to configure more of tethering capabilities. What I will show you is how you will be able to do USB Tethering without using any third-party applications.
Step 1 Enable the Data Connection from your device. If you do not know how to do that, go to your device Settings > Wireless and Networks > Mobile Networks and enable the Data Connection. There should be a mobile network type that appeared above your signal status like (3G, H, LTE, EDGE)
Step 2 Go to your device Settings > Developer Options and check USB Debugging. Enable this to avoid possible connection problems.
Step 3 Connect your phone to your computer via USB cable. It is always recommended to install proper drivers of your phone to avoid possible problems to occur.
Step 4 Go to your device Settings > Wireless and Networks > Tethering and Portable Hotspot and tap USB Tethering to enable it.
Step 5 Wait for your computer to detect your android device, process and configure your adapter and IP. Notice that the Network Connection icon on the lower right side of your computer is connecting. If not, install your device drivers.
Step 6 Wait for your network to be completely established before trying to browse the internet. If you can browse then you are done, if not, repeat the steps until you are able to connect.
NOTE: Some ROM's are having problems with regards to USB Tethering so another way to share your internet connection to your other devices is through WiFi Tethering.
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