Finding your phone's IP address, and the port question

The local address

On Android, open Settings, then Network & internet, then the Wi-Fi network you are on, and read the IP address field. On iPhone, Settings, Wi-Fi, the (i) beside the network. It will look like 192.168.1.37 or 10.0.0.14 — an address that exists only inside your network.

The public address

That is the one websites see, and it belongs to your router or your mobile carrier, not to the phone. Any IP checker shows it. On mobile data it is often shared with many other subscribers through carrier-grade NAT, which is why it can change between screen locks and why you cannot reliably accept incoming connections on mobile data.

Where the port actually comes from

Phones do not have "a port" in the sense the question usually means. A port belongs to a service that is listening, and a phone is normally a client. When a form asks for an IP address and a port together, it is asking for a proxy server — and that pair comes from whoever runs the proxy:

Host: gw.pyproxy.com
Port: 1111
User / Pass: from your dashboard

On Android, that pair goes in the Wi-Fi network's Proxy settings; on iPhone, in the same place under Configure Proxy, Manual. Note that Wi-Fi proxy settings apply to Wi-Fi only — they do not affect mobile data, and on Android they are ignored by some apps that manage their own connections.

What a proxy on a phone can and cannot do

It changes the address that websites and apps see, which is the point for testing localised content or checking how a page looks from another country. It does not hide your traffic from the network operator unless the traffic is encrypted, and it does not change anything for apps that bypass the system proxy.

If you are testing mobile-specific behaviour, a mobile proxy — a real carrier address from a live SIM — is what looks like a phone to the far end. A residential address looks like a home connection, which is right for most other work and considerably cheaper.

Questions people ask