I haven't tried to use WiFi in the past few days, I'll be sure to try it once I reach a location with an obtainable connection.
In the mean time, I recommend forgetting the location on your device, then rediscover it. Before you connect, ensure that the information (network name, password, etc) is all correct. If that doesn't resolve the problem, you could try wiping data and cache as that is where remembered connections are stored. If that, again fails to work, I'd almost certainly believe its a hardware issue.
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