Will my phone and laptop show the same IP on a what is my IP site?

On the same home Wi‑Fi, both typically use the same public IP outbound because the router shares one WAN address. Each device has its own private IP locally.

When would two home devices show different public IPs?

If one uses VPN while the other does not, or one is on mobile data while the other is on Wi‑Fi, the visible public IPs can differ.

Blog · Home network

Same Wi‑Fi: one public IP for everyone?

Usually yes. Your router gets one public IP from the ISP and shares it via NAT. Phones and PCs on that Wi‑Fi will match on What Is My IP Address IP unless one uses a VPN or different network.