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snowydog

macrumors 6502
Original poster
Aug 25, 2011
315
1
Apologies if this sounds ridiculous or if I'm missing something, but I ordered 32gb iPhone and I've added a few apps, photos etc ... But it's showing my capacity as 28gb .. Of which I've used 3.2gb so I have 24.8gb remaining ...

What's the deal with the 28 and why doesn't it say capacity as 32 ...

This is my first iPhone although I do have the iPad but could someone explain this to me?

Thanks.
 
Apologies if this sounds ridiculous or if I'm missing something, but I ordered 32gb iPhone and I've added a few apps, photos etc ... But it's showing my capacity as 28gb .. Of which I've used 3.2gb so I have 24.8gb remaining ...

What's the deal with the 28 and why doesn't it say capacity as 32 ...

This is my first iPhone although I do have the iPad but could someone explain this to me?

Thanks.

This is how all HDD's show capacity. You never get the "advertised" space in any drive you purchase.

http://www.tomshardware.com/forum/245851-32-hard-disk-label-actual-capacity-difference-excessive
 
The thing that is bizarre is that the used space is not equal across all 3 sizes...

16GB = ~15GB free
32GB = ~28GB free
64GB = ~54GB free

Any thoughts on that?
 
The 32GB is unformatted space, the memory need to be formatted to become useful, the formatted space is just under 30GB. The iOS and stock apps then takes 2GB more, so the available space of the user is around 28GB.
 
The thing that is bizarre is that the used space is not equal across all 3 sizes...

16GB = ~15GB free
32GB = ~28GB free
64GB = ~54GB free

Any thoughts on that?

The more GB you have, the less actual space you have:

That's actually right. The hard drive maufacturers don't just give you less, they just advertise a gigabyte as something different than what Windows recognizes.

At the gigabyte level, you lose 7.2%

640x.072=46

640-46=596

This is because the hard drive manufacturers say a gigabyte is 1000 megabytes, and 1 megabyte is 1000 kilobytes, rather than 1024 like windows reads it.

So at the kilobyte level, you lose 2.4%. At the megabyte level, you lose 4.8%. At the gigabyte level, you lose 7.2%. And at the terabyte level, we will be losing 9.6%. It really is bad. Eventually we will be recieving less than 90% of what is advertised.

So, for example, for 1TB you actually only get ~930GB.

iOS is not taking up any more space on a 64GB iPhone than it is on a 16GB iPhone.
 
The thing that is bizarre is that the used space is not equal across all 3 sizes...

16GB = ~15GB free
32GB = ~28GB free
64GB = ~54GB free

Any thoughts on that?

"advertised" size uses a 10 based system: 1000mb represents a gig, 1000kb a meg, etc.

But, in actuality, it's actually 1024mb in a gig, 1025kb in a meg, etc.

You lose space that way essentially. You can approximate it by doing capacity*1000 / 1024, but that won't be totally accurate because this rounding happens at every level, not just the gigabyte level.
 
"advertised" size uses a 10 based system: 1000mb represents a gig, 1000kb a meg, etc.

But, in actuality, it's actually 1024mb in a gig, 1025kb in a meg, etc.

You lose space that way essentially. You can approximate it by doing capacity*1000 / 1024, but that won't be totally accurate because this rounding happens at every level, not just the gigabyte level.

Makes sense. I was not thinking about advertised versus actual... Thanks for setting me straight.
 
This exact post. Every year. Every new iDevice.

Make that every computer device from music players, DVRs, computers, external HDDs, camera SD cards, etc. To be honest, it's starting to be mind blowing that someone can live in this digital age and not have come across this by now.
 
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