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macrumors 6502
Original poster
May 1, 2007
346
0
I bought an airport extreme recently. I have enabled dual channel on auto mode (2.4Ghz + 5Ghz, a/b/g/n)

My mbp is connected to the 5Ghz network, while the iPhone and iPad is connected to the 2.4Ghz as it only support that. When I loaded up the Airport Utilities, I can check the details of each wireless client. I noted my mbp connected speed is 300Mbps, while the iPhone and iPad is only 65Mbps.

iPhone and iPad are wireless-n devices, why is 2.4 Ghz and 5Ghz network has such big differences? It seems to me the speed is only at wireless-g instead of n.. Did I have the wrong settings? :confused:
 
Last edited:

Intell

macrumors P6
Jan 24, 2010
18,912
433
Inside
Both of the iDevices should connect at faster speeds and the iPad should connect at 5Ghz. You could try a different network setup. Go into the settings of your Airport Extreme. Where you can select what type of radio mode, press the option key and click the drop down menu. You will see many more choices. The one I use is "802.11n only (5Ghz) - 802.11b/g/n" mode. My iDevices connect at a faster rate, if they support it.
 
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laxman101

macrumors regular
May 6, 2011
117
1
I bought an airport extreme recently. I have enabled dual channel on auto mode (2.4Ghz + 5Ghz, a/b/g/n)

My mbp is connected to the 5Ghz network, while the iPhone and iPad is connected to the 2.4Ghz as it only support that. When I loaded up the Airport Utilities, I can check the details of each wireless client. I noted my mbp connected speed is 300Mbps, while the iPhone and iPad is only 54Mbps.

iPhone and iPad are wireless-n devices, why is 2.4 Ghz and 5Ghz network has such big differences? It seems to me the speed is only at wireless-g instead of n.. Did I have the wrong settings? :confused:

I think the wireless chips in the mobile devices don't support the full 300Mbps, probably 54Mbps
 
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hidehide

macrumors 6502
Original poster
May 1, 2007
346
0
Thanks for Intell's insight.

I tried to adjusted according to your settings, it seems the connection speed is still the same.

To correct my previous statement, the iPhone and iPad is 65Mbps instead of 54Mbps.

So does that mean 802.11n 2.4Ghz is only 65Mbps, while 802.11 5Ghz is 300Mbps?
If that's true, the speed difference is quite huge...
 
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Gav2k

macrumors G3
Jul 24, 2009
9,216
1,607
Thanks for Intell's insight.

I tried to adjusted according to your settings, it seems the connection speed is still the same.

To correct my previous statement, the iPhone and iPad is 65Mbps instead of 54Mbps.

So does that mean 802.11n 2.4Ghz is only 65Mbps, while 802.11 5Ghz is 300Mbps?
If that's true, the speed difference is quite huge...

The 2.4ghz spectrum although better for passing through walls etc suffers from being a very cluttered band that's effected by so many other devices. Even if there is another router near by with the same channel you will see drop offs in speed etc.

Your iPad should be connected to the 5ghz band as it is compatible.

The support notes for most chipsets do list the 2.4ghz n band as a max of 70mb not 300 like 5Ghz
 
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smellalot

macrumors 6502
Dec 6, 2011
277
2
No. i-devices have only one antenna and max out at 65Mbps. To reach the full 300Mbps your device needs to have three antennas.

65Mbps is by the way plenty of speed for an i-device.
 
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theSeb

macrumors 604
Aug 10, 2010
7,434
1,814
Poole, England
Real world tests show even less

41747.png
 
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Mr. Retrofire

macrumors 603
Mar 2, 2010
5,042
473
www.emiliana.cl/en
No. i-devices have only one antenna and max out at 65Mbps. To reach the full 300Mbps your device needs to have three antennas.
Not three. Two. Three antennas are necessary for 450 MBit/s 802.11n networks.

----------

Real world tests show even less

Image
The appropriate antennas for these high frequencies look ugly, so we cannot expect high data rates on iDevices and similar small devices, like smartphones.
 
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