Find public and private addresses without mixing them up
The Android guide records the public address seen beyond the network and the private address assigned on Wi-Fi, then explains why they differ. It also covers IPv4 and IPv6, manufacturer-specific menu differences, and what changes when moving between Wi-Fi, mobile data, and VPN.
Compare a VPN before and after connecting
A useful VPN check needs a baseline. Record public IP, network organization, approximate country, and observed DNS resolvers; connect the VPN; then repeat under the same underlying network. The guide explains what a changed result demonstrates and which security claims remain outside the test.
Choose the workflow that matches the problem
Use the address guide when you need to label a value or understand why Android and a website disagree. Use the VPN guide when a connection change should alter the public or DNS path. If the actual symptom is unstable calls, games, or loading, begin with the connection-quality explanation instead of forcing an IP comparison to answer a performance question.
Keep enough context to reproduce the result
Write down the active network, VPN state, target, time, and any setting you changed. Repeat an unexpected observation before troubleshooting. If you need to report the issue, those details are far more useful to a provider than a pass/fail label or an isolated screenshot.