iPhone 6 and 802.11ac Airport Extreme/Time Capsule

vtbb

macrumors newbie
Original poster
Oct 21, 2014
10
4
I was excited to pick up an iPhone 6 as my first device with 802.11ac. I have the newest Time Capsule with up-to-date firmware. Has anybody else checked to see what their link speeds are with this setup? I'm not talking internet speeds...I'm talking link speeds you see within the Airport Utility. I can't get above 86 mbps on my iPhone 6. For reference, my 2012 Macbook Pro is consistently above 200 mbps...my iPad Air is around 140 mbps...and then my iPhone 5 is only around 50-60 mbps. My iPhone 6 should be getting speeds well above my iPad Air.

I've also seen the video of the 6+ getting speeds well into the 250s. What gives? Apple support was no help. I've tried everything on the Time Capsule itself...but this seems like a phone issue.
 

tekkt0r

macrumors member
Sep 24, 2014
67
0
Couple things here... I have a 6+ and Airport Extreme 802.11ac. I'm able to get about 250mbps w/ my 6+.

First, is your phone running on the 5Ghz band? Second, are there any 802.11n, g, or b devices working on the 5Ghz band? If so, you're speeds will drop significantly. The network can only work as fast as the slowest connection. So if you've got some 802.11n device connected, you're not going to get 802.11ac speeds on your 6.

If this is the case, seperate your devices and make sure your using dual band. I have all my 802.11n, g, and b devices on my 2.4Ghz band. Then I have all my 802.11ac devices on my 5Ghz band.
 

vtbb

macrumors newbie
Original poster
Oct 21, 2014
10
4
I tried creating a 5GHz only network and just connected the 6 to that SSID. It didn't make any difference. And as I said, my iPad Air is getting speeds in the 140 mbps range on N.
 

RBM

macrumors newbie
Dec 1, 2010
7
0
433 Mbps here (6+), with seven other devices connected to the 5 GHz band.
 

tekkt0r

macrumors member
Sep 24, 2014
67
0
I tried creating a 5GHz only network and just connected the 6 to that SSID. It didn't make any difference. And as I said, my iPad Air is getting speeds in the 140 mbps range on N.
try changing channels on the band. might be some interference somewhere.
 

JD92

macrumors 6502a
Apr 14, 2005
934
30
Couple things here... I have a 6+ and Airport Extreme 802.11ac. I'm able to get about 250mbps w/ my 6+.

First, is your phone running on the 5Ghz band? Second, are there any 802.11n, g, or b devices working on the 5Ghz band? If so, you're speeds will drop significantly. The network can only work as fast as the slowest connection. So if you've got some 802.11n device connected, you're not going to get 802.11ac speeds on your 6.

If this is the case, seperate your devices and make sure your using dual band. I have all my 802.11n, g, and b devices on my 2.4Ghz band. Then I have all my 802.11ac devices on my 5Ghz band.
802.11b and g devices are 2.4GHz only. The newest Airports and Time Capsules, as well as the generation before them, are capable of simultaneous dual band operation, meaning that having a 2.4GHz device on the network won't limit the speeds of other devices.
 

cababah

macrumors 68000
Jun 11, 2009
1,678
149
SF Bay Area, CA
I have the same router.

iPad Air - 300Mb/s

iPhone 6 Plus - 78Mb/s

What the heck? The only ac capable device has the slowest connection? No other devices are currently connected atm.
 

wxman2003

Suspended
Apr 12, 2011
2,575
287
This is the speed I get between my iMac and iPhone 6 Plus via my Airport TC.



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I have the same router.

iPad Air - 300Mb/s

iPhone 6 Plus - 78Mb/s

What the heck? The only ac capable device has the slowest connection? No other devices are currently connected atm.
Do a reset network settings on your iPhone and try again.
 

HEK

macrumors 68040
Sep 24, 2013
3,352
5,794
US Eastern time zone
Have AirPort Extreme with duel band simultaneous capability. IPad Air connects at 150 to 160 on n band. At same time iPhone 6 Plus is connecting at 275 - 290 ac band.

There is a rapid fall off from the high speeds with 5 GHz ac based on distance and number of walls signal is passing through.

Am using the app WI-FI Sweetspots. Works real well, reveals where signal strength/speed falls off.

One more thing. One time I noted the 6+ was connecting at only 50-60. When I disconnect (forget network) that's settings, general, reset, reset network settings and re-logged in, it shot back up to 285mbps.
 
Last edited:

tekkt0r

macrumors member
Sep 24, 2014
67
0
802.11b and g devices are 2.4GHz only. The newest Airports and Time Capsules, as well as the generation before them, are capable of simultaneous dual band operation, meaning that having a 2.4GHz device on the network won't limit the speeds of other devices.
my understanding is any 802.11b or g device on the 2.4Ghz band will limit the entire network bandwidth to b or g speeds. i even tested this with an 802.11ac network card w/ my PC. On the 2.4Ghz band i was limited to a little less than 100mbps (802.11g devices were on the net). When i moved the 802.11ac card/PC to the 5Ghz band I jumped up to 700mbps.
 

cababah

macrumors 68000
Jun 11, 2009
1,678
149
SF Bay Area, CA
This is the speed I get between my iMac and iPhone 6 Plus via my Airport TC.

Image

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Do a reset network settings on your iPhone and try again.
That didn't work for me. I manually forced my 6+ on the 5GHz band and now it is seeing 433Mb/s. This seems strange because isn't the router supposed to automatically sense that the 6+ is capable of "ac" protocol and always provide the fastest connection for it?
 

wxman2003

Suspended
Apr 12, 2011
2,575
287
My fastest speeds are limited by my 2011 iMac. Fastest I can get is through my Airport TC between the two, with no other device connected to the router is around 255 Mbs. Doesn't matter whether my iMac is connected via wifi or ethernet to the TC. Just the limitations of my older iMac.

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That didn't work for me. I manually forced my 6+ on the 5GHz band and now it is seeing 433Mb/s. This seems strange because isn't the router supposed to automatically sense that the 6+ is capable of "ac" protocol and always provide the fastest connection for it?
I thought so too, but never got it to work that way. I had to set my router set up for a a separate 5GHz connection in addition to 2.4 GHz.
 

tekkt0r

macrumors member
Sep 24, 2014
67
0
That didn't work for me. I manually forced my 6+ on the 5GHz band and now it is seeing 433Mb/s. This seems strange because isn't the router supposed to automatically sense that the 6+ is capable of "ac" protocol and always provide the fastest connection for it?
i did the same thing. i set up a seperate 5Ghz network and allow only my AC devices on it.

great speeds now :)
 

ryanmcv

macrumors 6502a
Aug 12, 2007
734
383
Phoenix, AZ
I have an AirPort Extreme (newest 802.11ac model) in my relatively small apartment, and the AirPort Utility consistently reports that my iPhone 6 Plus is connected at 433 Mbps. My other devices (all 802.11n) are connected at 300 Mbps.
 

cababah

macrumors 68000
Jun 11, 2009
1,678
149
SF Bay Area, CA
I have an AirPort Extreme (newest 802.11ac model) in my relatively small apartment, and the AirPort Utility consistently reports that my iPhone 6 Plus is connected at 433 Mbps. My other devices (all 802.11n) are connected at 300 Mbps.
Did you manually put your 6+ on the 5GHz band?
 

JD92

macrumors 6502a
Apr 14, 2005
934
30
my understanding is any 802.11b or g device on the 2.4Ghz band will limit the entire network bandwidth to b or g speeds. i even tested this with an 802.11ac network card w/ my PC. On the 2.4Ghz band i was limited to a little less than 100mbps (802.11g devices were on the net). When i moved the 802.11ac card/PC to the 5Ghz band I jumped up to 700mbps.
Interesting. The point of having simultaneous dual-band capability in a wireless access point is to make sure one older device doesn't throttle other devices on the same network to 2.4GHz speeds. Maybe certain implementations still struggle with it for some reason, even if they have simultaneous dual band capabilities in the hardware.