They were not happy at the solution but here it is. We reduced the distance from the wifi router to the hdtv by half.
That was it and didn't require any new gear.
Bob
I have a Sony S580 that cannot connect to anything if my cell phone is connected to my wireless router. The S580 connects wirelessly to internet, Netflix/Amazon streaming, shared video files from my computer just fine if my husband's cell phone is connected to our wireless internet.
We have the same phone model: HTC Evo 4G from Sprint.
The Sony S580 works fine when our other devices are using the wireless connection at the same time:
*RCA BRC11072 Blu Ray player
*Husband's cell phone
*Two desktop computers
My husband says if he's using the S580's wireless connection for anything and I am not home, the connection drops as soon as I enter the front door with my cell phone on me.
It's a bother to disconnect my cell phone every time we want to stream music, movies, etc. It's also just not fair that my husband doesn't have this problem with his phone :-p
Any ideas on why my phone makes the Sony S580 unable to connect wirelessly?
My phone does not cause a problem for any other wireless device we own. They can all be on at once and the connection is very fast and smooth.
I'm not super tech savy so if you need more info, let me know. Our wireless router uses our cable internet connection thru a wired modem.
Thank you, in advance.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic