I read Why do cell phones disturb my speaker?, and while it does explain what's going on, it doesn't give any solutions.
I'm using Creative A60 speakers (I think I bought these back in 2011, but not sure), plugged in through 3.5mm audio jack in the back of my computer. They're beeping/buzzing regularly when my phone is on my computer desk. I don't have any room to move my phone away from my speakers in a way that doesn't increase the risk of accidentally pushing it off, so I'm looking for an alternative option to make this interference go away. It's extremely annoying, especially when it happens at 11 PM when everyone else is asleep, and I want to get rid of it, preferably without buying new speakers.
How do I stop this interference?