Originally Posted by VL-Tone
I hate to repeat myself, but if Apple releases a phablet, it will be 5.7" not 5.5".
5.7" is exactly half an iPad mini screen which would make it 1536x1024 at 326DPI. Two apps optimized for this screen format could run side by side on the iPads.
You are taking the manufacturing consideration over developer consideration. While using the same 326PPI would be great. Resolution does not make any sense. It isn't a iPhone 5 Multiple. Nor It is a iPad Multiple. You are basically creating a third category of devices that developers had to take care of. And NO, it is not as simple as another Fat Binaries. If that is the case Android wouldn't have fragmentation problems. ( Fragmentation isn't only OS version, screen size and resolution as well )
We have been through this before.
Either Double the Resolution, 2272 x 1280 , with the current and next year display tech that is only possible at 4.8" screen and up. Starting at 543PPI. The current A7 chip is already capable driving this resolution as shown with iPad Air and Retina Mini.
Or you create a 1.5x resolution. Which would be the best compromise. As the higher PPI the more power usage. But then some Apps and resolution doesn't do very well with the 0.5x multiple.
But with 50% larger screen and phone area, you are going get 70%+ larger battery since all part area stays constant, think this will more than offset the problem. Again only Apple would know.
Then there is price point, larger screen protected glass ( I dont think Sapphire front display are coming next year yet, although i would love to be proven wrong ), much better and larger display, larger battery. Although my estimate is that it will only add $5 to $10 to BOM cost. Apple will likely price their larger screen at $50 premium. Making the starting price increase from $649 to $699.