Issue with DrayTek router and iPhone wireless connection

[blue_harvester]

My wife and I both have iPhones which both work perfectly with any other wifi connections apart from our home wifi. We have a DrayTek Vigor 2800 ADSL2/2+ router and the wifi connection on the iPhones will drop exactly 10 minutes after the initial connection. The wifi symbol still appears at the top of the iPhone screen but there is no connection to the internet.

Furthermore, we both connect our laptops wirelessly to the router with no problems at all; it just seems to be the iPhone.

Any idea what's going on?

 

[blue_harvester]

I reckon that this problem has more to do with an issue in iPhone 2.1 firmware rather than an issue in the router. Hopefully this will be resolved with 2.2 version of the software.