• Failure to access the internet even when the Wi-Fi is connected.
• Failure to locate or join a nearby Wi-Fi. connection.
these can be done by tapping the setting icon, turning the Wi-Fi off and turning it on again. If the connection is still impossible then you can tell the phone to forget what it knows and give it new settings. Go to the Wi-Fi network screen and check individual settings, tap 'Forget this network' and verify by tapping 'Forget'. A list is provided and this enables you to reconnect by choosing your network from the list.
before attempting the complicated troubleshooting try moving you device closer to the router. Being too far away may weaken the signal or cause slow connections. It's also advisable to try connecting other devices to the router to see if it's working. You can try this by connecting your laptop or desktop to the wireless network. When any other device is working the problem may not be the router.
this may include any case or covering on the iPad. This may sound unbelievable but any obstruction may weaken the signal. It may not solve the problem but it can increase the signal strength.
if you are joining a network that needs a password it's important to make sure you entering the correct password. Some passwords may have letters that look the same but are very different like 'o' and '0', 8 and B,. When this does not work go to the final step.
if your lease has expired you can renew it by tapping the blue button on the right of the network name. This will take you to the network settings. Chose the 'Renew lease' and verify by touching the 'Renew' button. Hope this solves all your connectivity problems if not, contact your service provider.