Is it possible to connect to wifi over a phone call?
I just wanted to know was it technically feasible.
If I called you over the phone and you held your phone close to your wifi router and I put my phone call to my laptop would it be possible to connect to your wifi.
I know this works with wireless car keys but wasn’t sure if it worked with wifi.
Observing members:
0
Composing members:
0
7 Answers
No, it would not. Cellphones and routers operate at different frequencies for the most part, and use entirely different protocols, so it wouldn’t work just by holding them up to each other.
Trying to do it the way analog modems did back in the days of dialup (the old beeps and squawks) would end in naught as, again, different protocols, and even if you did make a translator to reconcile the differences, you’d have a garbled signal that would max out at 56Kbps and probably wouldn’t get even one-tenth that due to noise.
Oh, and doing it to my router wouldn’t work anyways; I use “whitelist” security, so unless you’re an 802.11n-compliant device with a MAC address that is on my whitelist of approved/authorized devices, you just. Won’t. Connect. Period. Even my phone (which is on my whitelist) would not be connecting that way as it wouldn’t be using the wifi transceiver with the correct MAC address.
Of course, there is wifi tethering, but that requires turning the wifi on the phone on, and will work even at a fair distance. But if you can tether a laptop to a smartphone, you can generally just use the phone’s 4G connection for data and leave my wifi alone anyways. There are also mobile hotspots that do only that, but most smartphones are also capable of tethering…. if you don’t mind draining the battery at a ridiculous rate.
As for wireless car keys, I have no idea what you are talking about… unless it’s the use of a laptop hooked to a special third-party transmitter to hack the car, or the car itself is modified with a celular receiver to allow you to pop the locks from your smartphone.
@jerv
If I was out and lost my car keys but had a set at home I could call my house mate and he could press the button on my car keys at home to open my car
yeah, that’s not possible. The video is also fake.
~And you can charge your phone in a microwave too.
Seriously though, Snopes says no and Mythbusters busted it.
Microphones and speakers only work in a particular frequency range, usually around 10–20Hz at the low end and 15–22KHz at the high end. That is far lower than any radio signal; keyfobs operate around 300MHz and most cellphones operate at no lower than 800MHz, so there is absolutely no way for a phone to pick up or transmit a radio signal through that way.
There are, however, plenty of bullshit artists on the internet. Many such things start at 4Chan, and I would wager that this one did to. I’d give it a 4/10 though as they’ve pulled of far better trollery in the past, like the aforementioned “charge your phone in the microwave” scam; by comparison, this is failsauce.
It won’t work. Not possible in this way.
Answer this question 
This question is in the General Section. Responses must be helpful and on-topic.
Composing members:
0
