A. RF (Radio Frequency)
RF refers to the use of electromagnetic waves in the radio frequency range for various wireless communications, including cellular networks, Wi-Fi, and Bluetooth. Mobile phones typically connect to the Internet via RF technologies such as cellular networks (3G, 4G, 5G), which enable data transmission between the mobile device and the Internet infrastructure, allowing users to access online services, browse websites, use apps, and more.
A. RF (Radio Frequency)
In a mobile phone, Internet connectivity is typically provided through RF (Radio Frequency) technologies, such as cellular networks like 4G or 5G, which use radio waves for data transmission.
A. RF
VPN is a Virtual Private Network technology that runs on existing Wireless/Wired connections, it doesn't provide one. If the cellular, wifi, wired connection is down your VPN client won't be able to communicate with the VPN server.
I would select RF.
https://www.engineersgarage.com/how-internet-works-on-mobile-devices/
upvoted 2 times
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