When you're using an Android device with mobile data connection enabled, wouldn't it be convenient for another computer device such as a Windows-based notebook to share this connection for access to the Internet? Yes, you can do a wireless connection via a portable hotspot, or a wired connection using a USB cable:
Turn your Android mobile into a portable Wi-Fi hotspot
On your mobile, go to Settings > More > Tethering & portable
If the device gets lost or stolen, it is important that you report the matter to your carrier and the police and they are likely to ask for details like the device’s IMEI number, IMSI, SIM number, etc. It helps if you can keep a record of this information somewhere outside your phone. You can find the IMEI number by dialing *#06# or get the SIM reader app and it will instantly extract the SIM and Device info that you can save to your email account.