New answers tagged connection-issues
Try this and let me know if it solves it. Go to "Settings" and turn off the wifi. Wait 30 seconds. Turn it back on and most devices will quickly connect.
I would use a linux system on a pc or laptop to troubleshoot this wifi connection, using ifconfig, ping, iwconfig. There are also nice dhcp tools on linux. When I had wifi connection problems on an Android phone, with a linux system I found the error in the dhcp server setup. After fixing this, the Android phone connected effortless.
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