2G emits up to 10x more ELF magnetic fields than 3G during calls.
Discussion
Why?
2G (GSM) uses time division multiple access (TDMA).
The phone transmits in rapid 217 Hz pulses (on/off bursts).
3G (UMTS) uses code division (CDMA).
It transmits in a more spread-out way.
Less pulsing = fewer sharp current spikes = weaker ELF fields.
4G probably lies in between 2G and 3G, leaning closer to 3Gās behaviour.
5G is unpredictable.
