lose Internet when wifi is connected

[FunkusMunkus]

Hi
I have a Z2 and recently when at home I am unable to get anything on the Internet while I am connected to my router. If I turn wifi off from the quick settings it is fine.
As far as I am aware I haven't changed anything and it used to be fine. I have no idea if it's a phone issue or a router issue. I think it could be phone cause the PS4, laptop and my partners phone are still fine.

Help would be greatly appreciated.
Thanks.

[Uliwooly]

Boot on safe mode and check again

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[FunkusMunkus]

Ok, tried that and it is still the same. With wifi on and connected to my router i get a dns error.
I tried redoing the connection to no avail.

[Uliwooly]

Check this out

http://talk.sonymobile.com/t5/FAQ/Wi-Fi-problems/m-p/348104#U348104

[BeadyEye]

I have the same problem randomly. It will work for X amount of minutes, then the wifi will just hang. Phone shows its connected, but no Internet access.

I've tried every single suggestion and still can't fix this. I know it's not a defective device because my home network is the only one that gives me this issue. I know it's not a router issue because every other device connects fine. It's a Sony bug that needs to be fixed. My gs3, OnePlus one, Galaxy nexus, Asus transformer prime, and 5 laptops don't ever have this issue. It truly is pathetic for a flagship phone to have this issue.