I could tell you "Bananas don't cause cancer, they are yellow and this color doesn't cause any sort of cellular damage". Please post experimental results, this is not a religious debate.
OP posted link to article with some results on rats, it's more convincing than one liners.
I'd agree with you that bananas don't cause cancer. That doesn't change the fact that Potassium 40 a beta emitting isotope of Potassium is present in Bananas. I'm not entirely sure how to link a source for my in progress Masters Degree in Nuclear Physics, but I did explain the energy emission of cell phone waves vs the energy emission of Beta decay.
Well, there were many inventions before which were totally safe - and later when science evolved suddenly they become totally dangerous.
Cigarettes are main example - for the first half of 20th century they were advertised as a cure for stress.
This isn't a matter of carcinogens or other effects on the human body by substances, its a matter of the laws of physics based on energy. Cancer from radiation is caused by ionizing energy from high energy waves causing damage to the body. The RF spectrum we are talking about isn't considered ionizing as the energy is too low. It is entirely possible that we don't understand the true causes of cancer, and for that reason Cell Phone signals could cause cancer. But in order for that to be true, sunlight and such would cause 100,000x as much damage as cell phones, (as sunlight has 100,000x more energy) still making them have negligible effect.
*where my numbers figures come from
The solid evidence is in the basic principals of wave/particle physics. No scientists even question whether or not cell phones are dangerous. If you have a banana for breakfast, that is technically one trillion (10^12) times more radiation than from cell phone signals. The energy of a wave = plank's constant * the frequency. 6.63x10^-34Js * 2x10^9Hz (2Ghz) = 1.2x10^-24 J. On the other hand, the Potassium 40 in your morning banana is a beta emitter. Beta emitters give off around 1x10^-12 J. Something else to keep in mind, FM Radio is around 100Mhz, compare that to Cellphones and the energy isn't much different. We all know Xrays are dangerous, well they start around 3x10^16 Hz. Visible Lights is 430-770 Thz (4.3-7.7x10^14 Hz). Cell Phones, Wifi, Bluetooth, things in the Ghz range are 100% completely safe. There is absolutely no reason based on science that non ionizing RF radiation is detrimental to human health.
Long story short, sunlight and bananas are doing trillions of times more damage to you than that call to mom.