Schmucks Now, I found out, when still using 4G, it had changed with both Pixel 8 and my old Samsung (which also had been not keeping up connecting all the time a few months back). Interesting is also, even when Mobile data is switched off, the 4G connection still is continuously keeping up connection with antenna towers and sending little data around each second! So this seems to be an issue of the new 4G system.
Perhaps.
As is the case with Wi-Fi access points, which can support various forms of client-side power-saving modes with various parameters, it seems quite likely that a given cell site can influence how often a registered device transmits.
But based on the information provided so far it's not 100% clear exactly what is being detected. Mentions have been made of multiple "RF meters" and "gadgets", but the details of those have not been provided. For all we know one of those "gadgets" is measuring something that isn't cellular transmissions... maybe it is Wi-Fi, or Bluetooth, or perhaps a spurious emission occurring when the GPU is powered down.
Schmucks So, to ask all grapheneOS developers: it would be wonderful for the future to have an option in my mobile where you can switch your mobile in an "only phone call mode" [...] That would be a great contribution to everybody's health!
Perhaps.
But I think a lot more details and experimental data would be required, and the phenomenon would need to be repeatable by others.
For example... which "RF meters" and which "gadgets"?