iPhone doesn't connect to wifi

[Bahaa-AZ]

I got a new router a month ago and was using my iphone 4 (IOS 4.3.3) and everything was fine. When I updated my iphone to IOS 5.0 and jailbroke it, it started acting weird with my wireless network, and by weird I mean it doesn't connect to my router when I ask it, instead I have to leave it and wait for it to connect on it's own, which sometimes doesn't happen for longer than a day. Usually when it connects it stays connected for as long as I'm in the wifi's range, but when I leave home and come back later, it won't connect. Sometimes it connects for a few seconds then it disconnects. I figured the problem was caused by the lease time (set to 2 hours), it restarts almost as soon as my phone connects. I tried doing a lot of things (updated my router, restarted my phone, turned off wifi then back on, rebooted router, forgot the network then added the password and everything again) and nothing worked. My macbook pro and my roommate's laptop connect with no problems, but both our iPhones 4 (IOS 5) don't (his iPhone isn't jailbroken). Any help would be much appreciated.

 

[blueroom]

Try it sans jailbreak.

 

[Bahaa-AZ]

If this may help I have a TP-Link router with the latest version (7).

 

[number84]

Not sure if related, but I've had issues with iOS devices in the past when my router had QoS enabled. Try disabling that and see if it helps any.

 

[srcstc]

I've noticed mine doing exactly the same thing.

 

[Bahaa-AZ]

Not sure if related, but I've had issues with iOS devices in the past when my router had QoS enabled. Try disabling that and see if it helps any.

QoS already disabled, it worked yesterday for me when I rebooted my router, but now after trying to reboot 2 times, it still won't connect.

 

[Thetonyk123]

QoS already disabled, it worked yesterday for me when I rebooted my router, but now after trying to reboot 2 times, it still won't connect.

Have you tried to reset your router?

 

[Bahaa-AZ]

Have you tried to reset your router?

I didn't try reseting it, but I did update it to the latest version, thinking this may solve the issue (I think this is equivalent to reseting) but it didn't. The only way it seems to work for me is rebooting the router a number of times until it works. It's driving me crazy, could it be a bug in IOS 5?