Hi @SylviaV Welcome to the forum
I don’t know of any but will have a look, it would be interesting.
However on the dangers which are largely based on theory and statistics it may be worth getting an understanding of what is happening.
The effect or force from electromagnetic radiation is not just relative to it’s ‘power’ of the transmitter but the frequency. Double the frequency and double the power all other things being equal. So wifi @ 5GHz is twice as powerful as wifi, and bluetooth and your home microwave all at 2.4Gh. Mobile networks work the the range on 1 to 3 Ghz.
Now this second kind of power due to the high frequency can more easily travel though the body and hence effect more cells and smaller parts of the cells for example.
The body is a bit like a series of fine nets and the smaller frequencies get through finer nets and can get to the chromosomes and atoms etc.
Very high frequncies like x-rays can pass through the body. In passing through some may dislodge the atomic structure and cause burning. To the outside skin this is not so damaging but to essential organs the issue is dies the body have the ability to repair quickly or will is create a mutated cell than can be cancerous.
The emf/radio waves of phone are millions of time less powerful in this second sense than even ultraviolet or normal light so the effiect is a) it won’t travel as deep, and b) bit can’t effect atom structures and chromosomes etc.
To get a better idea of the difference in this power to disrupt via frequency rather than the strength of the signal, which can burn like a microwave, look at this table.
Look at the line SHF 3GHz plus it is 100,000 times less powerful than light (see the three coloured bands)
Now be aware that on a square metre of earths surface gets approx 1Kilowatt of power per hour. So you can see why ultarviolet which is tens times more powerful may cause more damage.
Note now the wavelength. Light is around 1 micrometre 100,000 times smaller than the phones wave and so can interact with smaller components of the body, a bit like resonance.
Now consider the strength of the signal from a phone. It can hardly produce 1 Watt but true is is localised. If you are concerned line your pocket with aluminium foil.
The other way to look at this is to measure the damage done generally by all forms or radioactivity and put the phone in perspective.
Here is a table make by the manufactures of tritium exit signs for cinemas etc. The idea is that they contain radio active Hydrogen that can keep the fluorescent coating in the lamp alight for ten years 24/7 and what if one breaks.
Look at this and note the lowest is from Chernoble and Nuclear fallout, Tritium somewhat in the middle, cigarette smoking, as it pulls Polonium into the lungs is far worse. I won’t go through the list as you can read.
The issue is I am more at risk from the sun and the food I eat than I am from ŧhe phone.
So yes the phone may cause damage, but thousand s of times less than me working outside in the sun without a hat on my bald head etc.
By the way, although the tables are pickups off the internet I used to work on radar in the Royal Navy so am familiar will radiation dangers.
The SAR specification is designed to show how much radiation in terms of watts absorbed by 1Kg of body tissue, and around 1 is the preferred high level though some phones are nearer 2.
So to summarise I am 65Kg so that would equate to being able to absorb 65watts continuously without due concern.
Sitting in front of a wood fire is far more damaging as is siting in the sun.
The 1 watt per kilo does not take into account the area, hence the distance of the phone is relevant.
If Fairphone state the SAR at 1cm then at 0.5cm it will be 4 times stronger at .25cm 16 times at 1.25 mm 64 times.
The area covered maybe some 2cm squared, I’m not sure of the exact aerial dimensions.
How this effects the bodies tissue depends upon the type of tissue, it it’s fat not such a big deal it will just eb absorbed as heat, if muscle it could be an irritant which could become addictive and a turn on.
Next to the brain it will be a significant pattern of information that will be dealt with as an addiction and usually compensated for, like any other music.
The main issue is that the frequencies do not have the high energy that can disrupt chromosomes and atoms. The radio wave is around 10cm and may resonate with anything of that size and octaves to a decreasing degree, but there is no electrically sensitive body part anywhere near that size, unless two neurons in the brain are exactly that far apart (10cm) and have a common connection, which is so unlikely that we will probably have completely abandoned this planet and be living on Mars before such an event is recorded.
Here’s a link to a site that shows the level of concern that some people may find appealing/comforting/worrying/overthetop.