Hello,
I have the problem with WiFi connections but only on my mobile phone!!
Sometimes when I connect to the router, after a few seconds I lose my internet connection, but the WiFi connection still works.

Please tell me why this is happening.
Video: http://youtu.be/VOdYEdr4mVU

Take your phone to a specialist if it is the only device having trouble.

Wrong login or password.
Try use WPS.
Connect router in computer.
Write 192.168.0.101 or 102
Write login and password admin.
See problem or give persmission to mobile phone.

@ DannyDeth Where can I find it?
@ UnkN Are you kidding me? I know how to connect to the gatway xD. How I can give my mobile phone the permissions?

I don't exactly know the area you live in, so finding a phone repair shop from where I am is rather hard. You should probably check with where you bought the phone, and if that fails you, look on the web or in a recent phonebook.

I also have a similar problem on my computer. When the internet is very overloaded (downloading and playing), I lose connection to the router and my internet doesn't work. To recover the internet, I must restart my computer. Logging off doesn't help.

In that case, AlcatrazZ, you should probably call your ISP, that sounds like line noise or a faulty router. I was under the impression it only happened on your phone.

@ DannyDeth: My brothers use the internet and they never have a broken internet.

My god dude, any other details you didn't feel like mentioning earlier?

Please read this and utilise it: http://www.catb.org/esr/faqs/smart-questions.html

I had this problem too on my S4Mini (GT-I9195).
It has dissapeared after I have rooted it, but I don't think this is the real solution.

When it stops working for you, go check if its still working for ur brothers.
If it doesn't then it's a net problem.