Hey guys,
So I was thinking about throwing in a WiFi Jammer into a robot im designing for a prank on friends. Ive heard that cell phone jammers are illegal and was curious if a cell phone jammer is any different from a Wifi jammer? Also are WiFi jammers illegal if they do not interfere with cell phone signals - basically cell phones can still make calls just cant get on WiFi?
Trying to stay within all legal limits 
Thanks guys!
what country?
In most countries, interfering with any sort of wired or wireless communication is illegal.
Its the USA so id expect it to be illegal. Well shoot.
Actually, cell phone jammers are not illegal, as long as you make it clear that you are using on in a given area. Theaters often use them, so performances are not interrupted.
Really? Here is what the FCC has to say about that: Jamming Cell Phones and GPS Equipment is Against the Law | Federal Communications Commission
In recent years, the number of websites offering “cell jammers” or similar devices designed to block communications and create a “quiet zone” in vehicles, schools, theaters, restaurants, and other places has increased substantially. While these devices are marketed under different names, such as signal blockers, GPS jammers, or text stoppers, they have the same purpose. We remind and warn consumers that it is a violation of federal law to use a cell jammer or similar devices that intentionally block, jam, or interfere with authorized radio communications such as cell phones, police radar, GPS, and Wi-Fi. Despite some marketers’ claims, consumers cannot legally use jammers within the United States, nor can retailers lawfully sell them.