Test another site first: isolate the layer

The core idea is simple: connectivity has layers. Your device connects to Wi-Fi, Wi-Fi connects to your internet service provider, and your provider routes traffic to services like DNS, web servers, or email. If you only test one app, you cannot tell which layer is broken. For example, if your browser loads Google but your email client cannot send messages, the fault is not your internet connection—it is likely the email server or your account permissions. This layered thinking stops you wasting time resetting your router when the issue is elsewhere.

A quick elimination trick: try a different website or app on the same device. If that works, the problem is service-specific, not network-wide. Another hint: check if the failing service works on another device on the same Wi-Fi. If it does, the issue is device-specific (e.g., a misconfigured app or expired password). If it fails on all devices, the problem is either the service itself or your internet connection. To separate those, try a different network—like switching to mobile data. If the service works on mobile data, your home internet is the culprit.

Remember this as a three-step mental filter: device, network, service. If one app fails and another succeeds, skip the network layer and focus on the service. A compact test: open a different website or app before touching any settings. If that works, you have already isolated the problem to the failing service, saving minutes of unnecessary troubleshooting.