This is a repost of this question at Android SE.
There's an Asus 240 MIMO Wifi access point. There's a laptop running Windows XP that uses that access point no problem for years so far. And there's an Android based HTC Desire S smartphone that has problems. The objective is to make the smartphone access the Internet via the Wifi access point.
I open "wireless networks" configuration pane, "enable" Wifi - it goes through "scanning" and "obtaining IP address" stages, says "connected to TheRightNetworkName". The Wifi symbol is displayed in the bar under the top of the screen. Yet when I try to open any page in a browser if wouldn't do so and claim there were problems accessing that page.
- rebooted the phone - doesn't help
- checked MAC filtering on the AP - it is disabled
- disabled the firewall on the AP - doesn't help
- tried to change channels - doesn't help, the AP has 13 channels if that matters
- tried to change to 2.4 GHz - looks like it is already the only option, couldn't find any way to change the range
- didn't try to switch from WPA that is currently used to WEP because it feels quite scary - I can mess things up
- tried switching modes - b, g, b/g - doesn't help
Also tried to ping the smarphone IP from the laptop - the ping is okay.
The same smartphone works okay on two other WPA-protected networks okay, the problem is only on that network.
How do I debug and resolve this issue?