iPhone and iPad loses WiFi connection
Typical scenario is, I come home from work, my iPhone or iPad connects fine to the network, and I can work all I want on wireless. If I stop using the device, and leaves it alone for some time, and then picks up the device again, the icon on device says it is connected to WiFi - but it does not work. All actions on WiFi time out. Sonos tells me no Sonos devices are within range, Safari cannot find any web pages, apps cannot connect to servers etc.
If I stop the WiFi on iPhone / iPad, and starts it again, iPhone or iPad connects to home network, and works again. Also selecting "Renew lease" for the wireless gets it working again.
But it is very frustrating. ALL devices have this problem, some more often than others. At the moment my iPhone4 and iPad fall out 3-10 times a day.
My Wireless router is a Cisco (Linksys) WRVS4400n R2 on latest firmware (2.0.1.3). I don't see any problems in the wireless settings - but maybe I'm wrong.
We also have 5 PC's using same wireless, none of these have any problems with our wireless network.
iPhone 4, iPad, iOS 4