I just bring my own simple power plug to charge my phone. Usually, though, while at the airport I have my laptop out and plug my phone into the laptop to provide my own internet service to the laptop (and my laptop's USB port charges the phone). Even with my internet coming through my cell service instead of wi-fi, I still have a VPN.
This article is about Data Security.
From the article excerpt
"Don’t use free public WiFi, especially if you’re planning to make any online purchases. Do not ever enter any sensitive info while using unsecure WiFi." The post concludes with " Thanks to our IT team for these tips!"