The only thing that would significantly add to the weight is a bigger battery and even there new battery tech has come out that is lighter than the existing lithium ion battery tech so its possible to have a bigger battery with less weight
The only thing that would significantly add to the weight is a bigger battery
You said get rid of camera bump. That means making the entire device thicker because of the limits of optics. Batteries are already around 25% of the total weight so doubling battery life would increase weight 25%.
You want bigger everything and less weight.
???
Xperia VI (which is small and light for a modern phone) is heavier than the Galaxy S3.
The Xperia is much larger than an S3.
Xperia 162 x 74 x 8.2 mm weight 192 grams 98000 mm^3
S3 136.6 x 70.6 x 8.6 mm 133 grams 83000mm^3
But not twice as large.
It doesn’t weigh twice as much.
The only thing that would significantly add to the weight is a bigger battery and even there new battery tech has come out that is lighter than the existing lithium ion battery tech so its possible to have a bigger battery with less weight
You said get rid of camera bump. That means making the entire device thicker because of the limits of optics. Batteries are already around 25% of the total weight so doubling battery life would increase weight 25%.