Properly connected Wi-Fi takes precedence over mobile broadband, but it can be helpful to disable your device's mobile network connection while debugging Wi-Fi. When Wi-Fi is on, a signal indicator appears at the top right corner of your home screen. If Wi-Fi is off, tap the slider to turn Wi-Fi on. Tap Settings > Wireless & Networks > Wi-Fi as shown in Figure 1. Verify that your Android Wi-Fi adapter is enabled. Before going any further, make sure that your Android device's Wi-Fi radio is not in Airplane Mode and that Wi-Fi is on and ready to connect. Otherwise, proceed to step 2 to debug the affected Android client. If multiple clients are unable to connect, follow instructions in our wireless network troubleshooting tip to debug probably AP or router or upstream network problems.
Start by verifying that a wireless access point (AP) or router is nearby and actively offering Wi-Fi service. Always start here, using another Wi-Fi client to determine which is the likely culprit, the network or the client.
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