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jhfenton

macrumors 65816
Dec 11, 2012
1,179
806
Cincinnati, Ohio
Has anyone tried disabling cellular data for apps that can consume lots of data (App Store, YouTube, Skype, etc)?
Yes. This is what I do. Wifi assist "on." Cellular data "off" for YouTube, Music, and other potentially data heavy apps. (I'm using a corporate-issued iPhone 6, and I only have a 2GB data quota.) Wifi assist helps when I'm in the car leaving my house. iOS 8 would try to hang onto the nigh-useless wifi signal sitting on the street in front of my house. iOS 9 is smarter about it. But I can't get in trouble watching YouTube, thinking that I'm on wifi, when I'm really not.
 

JT2002TJ

macrumors 68020
Nov 7, 2013
2,073
1,400
How are you seeing that it is assisting you?

I was doing some work on one of my family members networks. I setup either over power, and 2 new access points so there was a wireless point on each floor. The basement router, was simply plugged in (not on the network), and I was trying to enter the routers menu to turn off the DHCP server. It would show as I was connected in the WIFI menu, but wouldn't actually display the wifi bars at the top, it would say LTE, and it would route me to 192.168.1.1 outside the network.

I had wifi assist off, as in theory with this on, if your network doesn't connect to the internet, it will force you to cellular. Basically it is like your computers networking adapter priority. It used to be WIFI then Cellular, now it is WIFI before Cellular only if WIFI has a connection to the internet (maybe it pings an apple server, and on fail/slow ping rates, it switches to cellular).
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
this is going to be a disaster when people get next months bill. I guarantee this will be default to off in an update.
Assuming it has that much of an effect on it all and/or assuming there's an issue with it. That all remains to be seen it seems.
 

wlossw

macrumors 65816
May 9, 2012
1,126
1,179
Montreal, Quebec, Canada
Assuming it has that much of an effect on it all and/or assuming there's an issue with it. That all remains to be seen it seems.

Anecdotally, I noticed LTE data usage in excess of 1 gb per day with this feature on. ( I usually use 6-8gb per months of lte data) I also have started getting updates from people I know who are seeing reported data usage of 15-20 gb over their data caps... and it hasn't been a month yet...
 

dcp10

macrumors 6502a
Jul 30, 2010
760
595
Not seeing this in my 5S running 9.1 beta 2. Can anyone confirm its supported?
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
Anecdotally, I noticed LTE data usage in excess of 1 gb per day with this feature on. ( I usually use 6-8gb per months of lte data) I also have started getting updates from people I know who are seeing reported data usage of 15-20 gb over their data caps... and it hasn't been a month yet...
Could that also be potentially from anything else (perhaps even unexplained/unexpected) related to upgrading to iOS 9 or anything like that?
 

prezasti

macrumors 6502
Jul 9, 2010
395
43
Not seeing this in my 5S running 9.1 beta 2. Can anyone confirm its supported?

I'm on a 5S running 9.1 PB and yes, it is on by default and is located in the cellular settings "below" all of the apps listed in the cellular settings. So make sure you scroll all the way down to the bottom in the cellular settings screen.
 

dcp10

macrumors 6502a
Jul 30, 2010
760
595
I'm on a 5S running 9.1 PB and yes, it is on by default and is located in the cellular settings "below" all of the apps listed in the cellular settings. So make sure you scroll all the way down to the bottom in the cellular settings screen.

Thanks
 

bushido

Suspended
Mar 26, 2008
8,070
2,755
Germany
does it disable the wifi icon when its "assisting" in the status bar? cuz a few days ago my iphone kept switching been the icon being there and not there and i wondered whats up with that. i noticed this feature was enabled so i disabled it
 

Yun0

macrumors 68000
Jun 12, 2013
1,561
828
Winnipeg, Canada
wow..do people (overall, not just here) even know what the setting ACTUALLY does? lately every issue ranging from slight to "major" is an epidemic..

default it on, default it off, dont care, just hope they dont remove it, this is a lovely feature. iphone isnt like most other wifi devices that drop signal when its out of range, iphone will hang on a signal it cant use for a long time before giving up..
 
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Gypsy36

macrumors regular
Mar 23, 2013
197
175
Canada
Yeah, my wifi sucks in my house and this was an unwelcome surprise but it is fixed now.

That being said, I notice a lot of cellular bleed for systems services. Right now I'm chasing down Itunes Media Services which keeps using cell data even when I don't use match and I have everything to do with iTunes set to wifi only.

It's crazy making.
 

wlossw

macrumors 65816
May 9, 2012
1,126
1,179
Montreal, Quebec, Canada
wow..do people (overall, not just here) even know what the setting ACTUALLY does? lately every issue ranging from slight to "major" is an epidemic..

default it on, default it off, dont care, just hope they dont remove it, this is a lovely feature. iphone isnt like most other wifi devices that drop signal when its out of range, iphone will hang on a signal it cant use for a long time before giving up..

Maybe 100-200$ in data overage is not a big deal to you... But my kids will be very sad if they have to pay that.
 
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Yun0

macrumors 68000
Jun 12, 2013
1,561
828
Winnipeg, Canada
Maybe 100-200$ in data overage is not a big deal to you... But my kids will be very sad if they have to pay that.

that is a huge deal, thats a problem waiting to happen if its that easy to go over ur data & to amounts that high, better plan or provider. most of us are robbed of data by default anyway from our carriers, especially in ON (holy god overpriced for like nothing). like 500mb data, is a travesty on any device with any setting

but its not just this one setting thats doing that, or im exempt vs the world, my connection to router drops when SNR is 7-9 to my iphone with it on, same with it off, if i stand still at the edge of range, it will stay on wifi & use it, regardless of the setting. router quality is going to play a big role here
 
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