Understanding the iPhone 6 Plus Screen
iOS still doesn't have proper resolution independence, hence hacks like this. There's no reason to be doing post scaling on a rendered image unless you have poor software which can't render at the proper resolution in the first place.If anyone else did this they'd be pilloried for it being the total battery wasting font-destroying hack that it is, but Apple gets away with it.This is true on the Macbook Retinas also - when I set mine to looks like 1680 or 1920, fonts get blurry due to this scaling, when if the software was better it'd be rendered at the native resolution and they would look as good as they do at the 2x resolution. (where the numbers work out that you can scale without a loss of fidelity)