Share your experience!
Last week I updated my Xperia U to ICS 4.04, and ever since, my wifi has stopped working after the first couple of seconds. I'm still connected to the wifi network, but nothing the internet isn't working.
I would really appreactiate some help for this problem, but I'm no tech expert, so take it easy!
Thank in advance.
Hi Yusuf
Firstly I should say I'm not here to offer a solution, rather I'm trying to see if we're having the same problem!
When you say that the wifi stops working, is it only on your phone or across all devices? I moved home this week and our wifi has been cutting out, but as soon as I disconnect my phone the internet is fine. However I haven't had this problem with the router at University.
Hope someone knows what's going on!
Cheers
I also had wifi trouble after ICS update. It was fixed by doing FACTORY RESET. This also cured lagging problems.
I've tried factory reseting it, but it doesn't work.
My wifi is working fine on other device such as my laptop, but it's just a problem on my phone. The wifi was fine before the ICS update, so it must be some kind of bug?
Yeah, we all got that problem... Change router settings from 802.11bgn to 11.g or 11.bn only. There is problem with latest wifi n cert.
But, this will work only for your router, not public ones 
Edit: Sorry for my spelling
How do I change the rooter settings?
I think Slajder meant "router" not "rooter"
Yes, the router... i fix it 
If you don't know how to change router settings, try google it for your router brand.
Usualy it's accessed by typing 192.168.1.1 , 192.168.0.1 in browser address and login with
user: admin
pass: admin
And search for wireless settings, every router is different. Here how it looks mine http://s13.postimage.org/lb7cpv107/Untitled.png
I've tried typing in 192.168.1.1 and 192.168.0.1 in the browser adress, but they aren't working. Where can I find I need to go on to my settings?
Dude, just tell me what kind of router do you have. I'll search for you.
Btw, i flashed my xperia u with latest Croatian(Slovakia have the same) firmwire 6.1.1.c.1.0 and it fix my wifi problem... So, now i can surf normaly... And it's pretty sleak, fast, it seams to me that now i have even more free ram memory than before.
I mean, i don't use facebook, tweeter or other social networking on my phone, but this is pretty surprising for me.