We take mobile internet for granted in 2021: It's an established technology that we all treat as something that "just works," and that means that much of the "how" gets forgotten. Like the amount of data being transmitted through the air whenever we step out the door. If you do a lot of work out of the home on public, or even public but secured, Wi-Fi networks you need a VPN for your phone or other mobile device that will anonymize your traffic and prevent your personally identifiable information from being handed over to an attacker on a silver platter.

Link: The mobile VPNs of 2021 that you need to try
via http://www.techrepublic.com