Very informative and well written @eurogee! Thank you for this.
I have a question: When I sleep I keep my phone next to me (I use it as an alarm clock, you see), but I always switch to airplane mode. Did you read anything about it? Does this lower the levels of emitted radiation?
Even if it is turned off, it is advisable to keep it away from your body. I didn't see any information about air plane mode but stick to expert recommendations. Thanks