Towers and antennas
It's important to know the difference between antennas and towers. Towers are the structures to support the antennas. Like a street light where the brightness depends on distance from the light and not on its support pole. You need to keep your distance from the antennas that transmit the radio signal and not the towers that hold the antennas.
You also need to be aware of the many different designs of mobile phone base stations that vary widely in their power and characteristics, affecting their potential for exposing people to RF signals. Research has shown that at the ground level, the intensity of radio frequency signal from base stations are typically less than one thousandth of those from mobile phones.