cell phones and tubes

Hello,
I was wondering if anyone has had the same experience. If I have my cell phone in my listening room, it will periodically cause noise to come out of my speakers. This is the same phenomenon that occurs when you put your cell phone next to a CRT style computer monitor. When a phone call is coming in, the CRT starts to "squawk" just before the phone rings. Anyone who works in a cubicle in corporate America is probably all too familiar with this.
I'm guessing that the tubes are picking up the large amounts of RFI being transmitted and received by the phone.
My question is: What are the audiophiles doing about it? At this point, my only option is to turn the phone off. Moving the phone to another room can minimize the effect, but doesn't totally negate it. I don't like turning the phone off, because it's my only phone (no land line).
I figured someone must have come up with an interesting way to deal with this...

Cheers.

Tom