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I can't use WiFi for anything except WhatsApp on my Samsung Galaxy S3 mini.

I already turned on WiFi on my phone. But I can't do anything except WhatsApp. I can't browsing via WiFi, and can't open Play Store either. But when I use mobile data (via my Internet provider) I can do anything, except that I can't browse Play Store either.

When I use WiFi via my computer it can work, but can't work again via my phone.

The password is correct. I already check it, but nothing's work.

What should I do? Please help me!

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Had exactly the same issue. Fixed it:

Set the router to automatically assign DNS. Turn off PC, Router, Android. Turn on PC, Router, Android after 15 sec.

Everything works like before now! :)

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    As for Wi-Fi, in order to change DNS you don't need root nor that app. All you need is go to wifi settings, long-tap on a wifi connection>modify network>show advanced options>IP Settings, there you can put any DNS you wish :) but that couldn't be a good solution for above problem, because that error had some specific manner – Ilo Dec 12 '13 at 10:13
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    Ilo: I'd say that's a great solution if the reason WhatsApp is the only app working is that it uses IP-addresses and not DNS, making the primary issue a DNS issue :) – pzkpfw Dec 12 '13 at 10:14
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This worked for me 100%. Go to WiFi settings in your phone. Long tap the connected WiFi connection, select modify network settings and check if proxy is enabled which I am sure will be enabled, just switch it back to NONE, then again switch off the WiFi and switch it on again. Viola, the internet is back again.

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I faced the same issue when changed my router from 3com to Asus DSL-N12E_C1 . my DNS was set to automatic by default . I only changed it to google DNS : 8.8.8.8 and it amazingly WORKED .

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Clean all the cache using All-In-One Toolbox, and restart your phone. It worked for me.

protected by Community Aug 6 '15 at 15:52

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