2 iPads same model different weights?

Jasmynp

macrumors 6502
Original poster
May 15, 2011
384
78
East Coast, USA
I just bought a 128gb iPP 9.7 LTE form a guy on swappa.

I have the identical model, color, etc from best buy.

The one from best buy weighs 445 grams. The one from swappa weighs 449 grams.

Small variation, but I can tell the difference.

iTunes accepted it and I was able to upgrade to 10.01 just fine, but I'm still curious about what would make them have different weights.

Any ideas?
 

Newtons Apple

Suspended
Mar 12, 2014
22,764
14,918
Jacksonville, Florida
I too find it hard to believe that you can notice 4 extra grams in a over 400 gram device.

I am still puzzled why they do not weight the same. I have weighed both of my 9.7 iPad pros, same model and they were within a gram of each other.
 
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Relentless Power

macrumors Nehalem
Jul 12, 2016
30,357
30,609
I just bought a 128gb iPP 9.7 LTE form a guy on swappa.

I have the identical model, color, etc from best buy.

The one from best buy weighs 445 grams. The one from swappa weighs 449 grams.

Small variation, but I can tell the difference.

iTunes accepted it and I was able to upgrade to 10.01 just fine, but I'm still curious about what would make them have different weights.

Any ideas?
Difference in variations for the weight of the aluminum or adhesive perhaps.
 

Jasmynp

macrumors 6502
Original poster
May 15, 2011
384
78
East Coast, USA
I first noticed the weight because there was a really thick glass screen protector on the swappa iPad when I got it. That, of course, made it heavier and made the feel much different in hand. I took the screen protector off and they got within 4 grams of each other and for a while I noticed the went but as the evening wore on, I couldn't tell the difference.

Still curious about that small difference in weight, but it's a working iPad for a great price so I'm happy.
 

joeblow7777

macrumors 603
Sep 7, 2010
5,966
6,755
You can recognize a 0.9% difference in weight between two objects that each weigh less than 500g? You should be less concerned about this unexpected discrepancy and more concerned about the fact that you may be an android.
 

ActionableMango

macrumors G3
Sep 21, 2010
9,263
6,251
Any ideas?
Different part suppliers. For example the iPhone 6S has CPU from either Samsung or TSMC. The TSMC chip is much larger and theoretically would weigh a tiny bit more. There have also been different LCD screens for same model iPad (Samsung or Sharp).

So in your iPads there are probably different parts suppliers for something or other. Perhaps the battery.
 
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Channan

macrumors 68030
Mar 7, 2012
2,592
2,107
New Orleans
A sheet of paper weighs more than 4 grams. There is absolutely no way I'd ever be able to tell the difference in weight between two iPads if only one had a sheet of paper on top.