Most people are having their phones within their arms reach for 24 hours today. So even if conclusive longitudinal research on the effects of cell phone radiation is still hard to come by, users may still want to know if their phones emit too much radiation.
According to the German Federal Office for Radiation Protection (Bundesamt für Strahlenschutz), the smartphones creating the lowest level of radiation are the ZTE Axon Elite and Samsung Galaxy Note8, with a specific absorption rate of 0.17 watts per kilogram.
Alongside Nokia, Samsung handsets feature prominently, with eight of the smartphones on this ranking coming from the South Korean company.
This contrasts starkly with their major rival Apple. Two iPhones occupy a place in the list of phones which emit the most radiation, compared to none from Samsung.
But, as Statista's Martin Armstrong notes, the current smartphone creating the highest level of radiation is the Mi A1 from Chinese vendor Xiaomi.
Another Xiaomi phone is in second place - the Mi Max 3. Premium Apple phones such as the iPhone 7 and the iPhone 8 are also here to be seen, as are the latest Pixel handsets from Google.
While there is no universal guideline for a 'safe' level of phone radiation, the German certification for environmental friendliness 'Der Blaue Engel' (Blue Angel) only certifies phones which have a specific absorption rate of less than 0.60 watts per kilogram.
