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Last Monday I changed provider and got a new simcard. I can use the phone and send SMS/text messages. Internet didn't work anymore. Wifi didn't work anymore. Both have not worked since. I do see the 3G or GPRS icon in the statusbar. I see the Wifi icon, and it's connected to the right network. I've tried this on several locations.

The provider says they have a problem since Tuesday (not Monday), so 3G does not work. What baffles me is that wifi doesn't work anymore.

Last weekend I've tried to get a paid proxy service working on my laptop, which didn't work for some reason. I installed OpenVPN on my phone. I didn't configure the proxy service on the phone however. I removed OpenVPN yesterday to be sure. I have used internet on the phone since installing OpenVPN, so I guess that can't be the problem.

On Twitter I read about someone using the same network who could still use Whatsapp, so I tried that, and then saw a popup "unable to resolve host ota.avatarrom.com" (or something like that - it disappeared too soon). I've installed Avatarrom several months ago, and although I have problems with it (Settings crashes on and on), it works reasonably. Whatsapp couldn't connect by the way. The phone: Samsung Galaxy S2.

The provider can't tell when their problems are over. I'm curious if that will solve anything, we'll see.

Can you explain this? What can I do to get Wifi working again?

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    As always in cases like that, a logcat might prove helpful. If you can, connect your device via USB to your computer and run adb logcat -f logfile.log while trying to connect to your WiFi and access the net. Then stop logging, and investigate logfile.log for clues (of couse, you can name the file anything you want and your OS permits ;) – Izzy Nov 6 '13 at 12:39
  • I just found out that disabling the AFwall+ firewall solved my problems. Suddenly everything works. This has worked with the previous provider, and I don't understand how changing the simcard can result in this. – SPRBRN Nov 6 '13 at 13:27
  • If someone can explain this, I'll approve that answer! – SPRBRN Nov 6 '13 at 13:35
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    Without more information (logs), we only can guess. Maybe it's a coincidence, and you've changed something in AFWall+ at the same time. – Izzy Nov 6 '13 at 14:03
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I found out that disabling the AFwall+ firewall solved my problems. Now everything works. This has worked with the previous provider, and I don't understand how changing the simcard can result in this.

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