Ask HN: What are the consequences if you don't put your phone into flight mode?
Do consequences/dangers exist (If any), or does the pilot just hear that annoying "da da da" noise in his/her headphones?
Analog phone used lower frequencies to cover longer ranges. Back then we had of fewer towers so you had to use lower frequencies. The lower the frequency the more ground you can cover, the better reliability. Airplanes used the similar frequencies for all the same reasons.
Now both planes and phones use better equipment with better FCC oversight on was frequencies and transmission type each uses. Airplanes rely more on satellite communication then terrestrial towers which further helps to prevent radio communication collision.
Unless of course you put flight mode back on again.
Small nitpick: you probably mean _rogue_, rouge alludes to red (powder).