galaxy S2 plus wifi problem

[Android Question]

hi
im using galaxy s2 plus for 6 months from now and recently got a home wifi. it works good on my phone but sometimes it wont work. i can see my phone connected with the wifi but i cant access the internet. there is absolutely no problem with my wifi service provider too. the only app runs with wifi is whatsapp and i couldnt access others like twitter, insta, etc.. kindly help with this issue. thank you!

 

[Rukbat]

Is there a WPS button on the router? Or a button with "refresh" arrows? (There should be if it's a fairly recent router.) Push that and select the connection in the phone and it'll connect to the router properly.

If it still doesn't work properly, that may be another bug in the 4.3 update.