Speakers - Mobile phone disturbance

I'm looking for new speakers because the ones I have now came standard with my PC and they blow. But I'm looking for speakers that don't start beeping and whistling whenever I make a call or send a message with my mobile.
I suppose you know what I mean, so any recommendations?
Just a 2 speaker set, no 5.1 etc.

I'm not aware of speakers that aren't affected by mobiles, unless any are shielded but I don't see how they could be. Phones give off fairly strong magnetic fields.

Well yea, I'm really looking for speakers that aren't affected by it, because it seriously annoys me.

As long as your don't leave your cell phone within half a meter of your speakers, they shouldn't beep...

Alright, but still. Any recommendations on Speakers...
Not too expensive, max 200€