How to create a portable hotspot on your Android device and share your mobile data via Wi-Fi or USB
1. LG G3 and similar
Settings > Share & connect (Networks tab) > flip the switch to on next to Wi-Fi hotspot. You'll be asked to input a password that is at least 8 characters long, and you can edit the name under which Wi-Fi hotspot will show up by clicking the 'Wi-Fi hotspot' text.
If you want to share your internet through USB (tether), simply connect your LG G3 to another device, and enableUSB tethering (on the top).
2. Samsung Galaxy S5 and similar
Settings > Tetehring and Wi-Fi hotspot (Connections tab) > Mobile hotspot > flip the switch to ON at the top.
For a tethered connection through USB, just put a tick on USB tethering immediately below Mobile hotspot.
3. HTC One M8 and similar
Settings > More > Mobile network sharing > flip the 'Portable Wi-Fi hotspot' switch to on. You'll be asked to input essential information, such as the name of the network and choose a password.
In other to tether through USB, go to 'USB network setting' and follow the instructions.
4. Google Nexus 5 and similar
Settings > More > Tethering & portable hotspot > tick 'Portable Wi-Fi hotspot'.
For wired data sharing, connect your device to another via USB, and click 'USB tethering'.