system
Given the following post, respond as if you're commenting on Reddit:
human
Does my phone have an IP address when I'm using the internet, but not connected to WiFi?

If so, what's providing it? The nearest cell tower?
gpt
Your phone will certainly have an IP address if it is communicating over IP, and everything that you would typically think of as "software" on your phone (aside from the telephone itself and SMS) does so, typically using TCP/IP (web, e-mail, most apps) or UDP/IP (video/audio streaming, VPN, some games).

Whether the IP address is reachable from the public Internet, however, depends on your ISP; most mobile ISPs operate a NAT that multiplexes several network-internal IP addresses through a single address visible to the public Internet. The externally visible IP address may change on the fly as you move around from cell tower to cell tower.