Wifi connecting and disconnecting, connecting and disconnecting . . . .

Hi
My dad has just inherited the iPhone 3G from my brother, and is having trouble connecting to the home wifi.
I also have the same phone, and have no problem connecting. before my brother gave the phone to my dad, he also had no problem connecting with the home netowork.
What is most confusing is that the phone recognises the network, automatically connects to it, and within seconds, it disconnects. Then goes through the same process again, and again and again . . . . . . .connecting and disconnecting, connecting and disconnecting . . . . .. etc.
It's like flicking a switch on and off - non stop.
I am very technically inept, so would be very gratefull of some insight.
Thanks

I think you have the wrong forum. This is the ThinkCenter forum, for desktop systems, you have a Thinkpad?

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Wifi connecting and disconnecting, connecting and disconnecting . . . .

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