Europeans have consumed an average of 2.4GB of mobile data per SIM in 2017 - based on GlobalData's research. Among Europeans, the Finnish are in the lead, using an average of 13.3GB per SIM, which is more than twice as much as the runner-up Austrians, which use 5.7GB per SIM. The Polish (3.7GB) and Russians (3.5GB) are also among the top in terms of mobile data usage. On the opposite side are Ukraine, Slovakia, the Czech Republic and Germany, where average mobile usage per SIM is lower than 1GB. Ukraine started to deploy 3G networks in the not so distant 2015 and is yet to deploy...
Source: https://www.gsmarena.com/globaldata_europeans_used_an_average_of_24gb_mobile_data_per_month_in_2017-news-28570.php