I can't tell from your post if you've verified that the problem does not currently occur when using a laptop. Can you clarify?

The reason I ask is, I've had multiple wireless routers that (when they get a bit old) seem to have overheating issues. I'm not sure the cause, but it's worse on hot summer days, the router gets noticeably hot, and the Wifi will just turn off. I haven't used the model you mentioned though, so I'm not sure if this is helpful to you or not.

 

Have you tried more than one wireless device or are you assuming that because you can't connect with your phone that the wireless net has stopped working?

A similar problem happens to me when I forget to tell my phone to use a static IP again when I return home. I have my home network setup using static IPs for Xbox Live reasons.. if I forget to tell my phone to use a static IP again, it causes all kinds of problems.

Make sure either every or no device on your network is using a static IP.

 

I think the question Matttye was aking was, when the SSID disappears (you can't see it on the phone), have you tried connecting a laptop via WiFi, to check wether it is actually the router. The Desire is well known for dropping WiFi sometimes.

 

Hey buddy,

We had new internet with SKY (an ISP in the UK) and my download speed was set at 300kbps for the first 10 days. The first 10 days they use for testing the stability of my connection.

Anyway, we use to get loadsa disconnections when laptops and phones were connected wirelessly.

I tried everything to fix it. This went on for a couple of weeks. Suddenly, the problem went away. I realised that sky dropped my max download speed from 300kbps to 200kbps.

It's been 6 months, not had a single disconnection on any device since.