It's hard to blind-trust certain statistics for a simple reason, many use mobile internet when on train/bus, waiting something in line out of their homes etc, h

It's hard to blind-trust certain statistics for a simple reason, many use mobile internet when on train/bus, waiting something in line out of their homes etc, however they really use internet at home/work from a PC. In terms of time many may spend more time on a mobile devices not because it's their primary platform but because of today inefficient/poorly organized life etc. Such scenario is hard to track statistically.