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I was thrilled when the cafe at our local sport center started to provide free wifi. Everything was great for awhile, but a few weeks ago something changed, and now my devices cannot browse or check email etc. Despite being able to detect the wifi network with full bars, my devices tell me they cannot connect to the Internet. The staff do not think they have changed anything. What could be happening, or what could be different? Is there anything I can do about it?

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Have you tried restarting the devices? Have you tried Settings/General/Reset/Reset Network Settings? – Richard Dec 18 '11 at 12:49

When your iOS device doesn't get an IP address from the router that will route packets to web sites like or some of the other under the hood servers like the iCloud servers and APN (Apple Push Notification) servers it will let you know it's not connected to the internet.

In this case, it's almost always a problem with the wireless router or the internet service in the shop. Even if other people are surfing, the router could be out of new addresses and need a reboot. If no-one in the shop has access, then the causes could be lots of other things and not a temporary outage of DHCP addresses.

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Adding on to this, something quick that might help (but doesn't really justify an answer) go to Settings > Wifi and select the network ( the (>) on the right hand side) and forget the network. Then attempt to re-join - it might solve the problem as it forces the i-device to forget all it knows about the network so far. – George Pearce Jan 2 '12 at 2:06
Great comment - in that vein, you also can also request to renew the DHCP information which does the same thing as the above assuming there are not more than one base station broadcasting on that SSID / network name. – bmike Jan 2 '12 at 15:38

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