Apologies if this isn't wholly on-topic but here goes.

All of the GSM Treos launched in the UK (from at least the 650) have had quad band radios - this means GSM 850, 900, 1800 and 1900 MHz. In the UK, we use the 900 and 1800 bands.

One of my colleagues tells me today that the GSM 900 band uses less power and has larger cells compared with the 1800 band. From my school boy physics, the shorter the frequency, the longer the wavelength - but I have no idea if this has any impact on power consumption, unless longer wavelengths pass through objects better..?

Google throws up lots of hits, but, it's a bit too technical for me. Is the answer "so little difference most people won't notice?" then?