VPN (pc and android)

A VPN or Virtual Private Network is a method used to add security and privacy to private and public networks, like WiFi Hotspots and the Internet. VPNs are most often used by corporations to protect sensitive data. However, using a personal VPN is increasingly becoming more popular as more interactions that were previously face-to-face transition to the Internet. Privacy is increased with a VPN because the user's initial IP address is replaced with one from the VPN provider. This method allows subscribers to attain an IP address from any gateway city the VPN service provides. For instance, you may live in San Francisco, but with a VPN, you can appear to live in Amsterdam, New York, or any number of gateway cities. 

Best free VPN for android :-
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Opera Free VPN - Unlimited VPN - Android Apps on Google Play

Access websites, apps, regardless of location & block ad trackers with Opera VPN

Best free VPN for PC refer link below :
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Access blocked sites and surf the web anonymously with these free VPNs

A VPN is essential if you're concerned about privacy and want to make sure that you're safe when you connect to public WiFi. There are other benefits to using a VPN too. Free VPNs are available, but some have their drawbacks. Read on to find out about best free VPN options and whether they're right for you.