Why don't phones have dual micro SD card slots?

[Red Iron Crown]

i dont understand the reasoning behind making small screens so high res. what the point if you have to squint to see any of that detail?

It's a spec sheet thing. People who don't follow technology will choose specs with higher numbers even if there is no practical benefit.

[Nibb31]

i dont understand the reasoning behind making small screens so high res. what the point if you have to squint to see any of that detail?

Marketing mostly.

But the difference is visible between my old Galaxy Note (1280 x 800) and my new OnePlus One (1920x1080). Higher DPI means also more information on the screen. I don't see the point in going to 4K on a 5.5" screen though, but it will happen.

What people tend to forget is that more pixels means more processing power required. Going from HD to 4K means that there are 4 times more pixels, which mean that you need more video RAM and a faster processor (not necessarily 4 times faster, but significantly faster).

Edited November 28, 2014 by Nibb31

[dharak1]

My phone has a 5.5" 1440x2560 screen. By five an a half inches a 2k screen is worth it. You can get a similar density with HD on a 4.7 inch screen though so it's no necessary. And I do done weeks at a time with no internet access. I've spent 17 days without it before. I'll watch movies while I'm operating equipment so I can go through as many as 5 a day. It's always nice to have everything on device when you are in an area with shaky reception too.

[Nibb31]

Yours is still a niche use case that doesn't warrant manufacturers investing in dual SD card slots. As you say yourself, even that would not be enough.

For your use, you should get an OTG SD card reader or an external USB drive.