Phones have been getting heavier. And no, it's not because they've been getting "bigger" - screen size certainly went up, but thickness went down. The average volume of the 50 most popular phones has been pretty stable since around 2006. If you remember your physics lessons from school, you'll know this means that density went up. We think that the increased use of metal and glass caused this. Both are heavier than the plastic that was used in the early days. It's not just that they are heavier, they need to be thick too. Plastic (as the name suggests) bends easily but quickly...
Source: https://www.gsmarena.com/counterclockwise_putting_on_weight-news-28643.php
