have you conducted a double blind test? Label two which are streaming, and two which aren’t. Ask a friend to pick two at random. Repeat many times and record results.
Many people have been studied who present with these symptoms. They are consistently unable to detect the presence of fields.
PS I can already see fault with the experiment in which the streaming devices are likely to be warmer.
I haven't done a double test, so will definitely try it.
Re: device temperature - don't even need to hold the device. It could be just very close to me if the bandwidth is high.
Once I set at the table next to my friend's open laptop and started feeling those head 'cramps' immediately as he started downloading a large ISO. Put on pause - the feeling subsides in a minute.
Doesn't feel like a pain, def. not sharp pain, but a significant discomfort, sort of a little brain earthquake.
I don't know why EMF sensitivity is not properly studied, as it's def. not a myth!
I've had someone in my flat make almost exactly that claim. They made it while unknowingly sat immediately next to a busy WiFi router. The claim did not go well for them.
Also worth noting that an iPad playing high bitrate video will be warmer than one which isn't; I could probably tell the difference too.
I agree with other suggestions: do a proper double-blind test. Others mentioned temperature difference, but I'd also suggest coil whine as an alternative hypothesis - and it's known that many electronic devices emit audible noise that's picked up (and really uncomfortable to) small subset of the population, especially when under load.
I used to get a very sharp pain in my head, above my ear, when making outbound calls, just before the recipient would pick up. Nobody seems to believe me, and I have never had the motivation to try to prove it to anyone, but it got to the point where I would hold the phone away from my head until the person answered.
It began with a Sony Ericsson, but happened across a couple of different phone brands over the years. Still happens extremely occasionally now (maybe twice a year) with my iPhone.
I'd be interested to know if the signal strength is suddenly spiked when a call is connected.
I get a sharp pain in my head above my ear from my glasses. The skin right there is very sensitive. Just rubbing things (including phones) causes the same senstation.
Not when it comes to GSM, it has consistent timeslots for active calls. The dial tone is modulated the same way as speech data and can be considered active.
As soon as there is a high-bandwidth transmitter very close to me - headache comes in seconds.
I've done blind tests holding non-remitting iPad or the one streaming 1080p movies at high bitrate and easily able to tell when there is no radiation.