Wake from sleep wifi issue iPhone 5

Trey M · Sep 23, 2012, 01:55 AM

So I've noticed everytime I leave my iphone 5 sleeping for a minute or so and then I press the home button to turn the screen on, LTE is the first default connection on the top left status bar. Then, after 2 seconds or so, the wifi indicator returns, confirming my connection to our router. Has anyone else noticed this? Is the iPhone 5, or maybe just the Verizon iPhone 5, defaulting to other technologies when in sleep mode, therefore causing background data (email, push, notifications) to use my cellular connection instead of wifi?

Opstech · Sep 23, 2012, 01:58 AM

Mine is doing this too. I see no need to worry about it. My 4s did it too

iHawaii · Sep 23, 2012, 01:59 AM

I am on ATT - mine does the same thing... shows LTE for a split second when waking it, then reverts to house wifi. I don't know if any cellular data is being consumed when asleep, but this doesn't affect me - unlimited user. However, I'd be interested to know why this is occurring.

nabechu · Sep 23, 2012, 02:02 AM

My 4 and 4S do the same thing, its normal. The wifi always shuts off after you put the phone to sleep and reconnects when woken up.

Trey M · Sep 23, 2012, 02:23 AM

I know for a fact my 4S didn't do this. Not saying y'alls didn't, but mine never had this issue. Regardless, the fact that you all have had this issue sort of makes it a non-issue.

Still worries me that notifications are being pushed using cellular data. I just moved from AT&T unlimited to Verizon 6GB data plan so I definitely need to start watching my data!

ek9max · Sep 23, 2012, 04:08 AM

My 4,4s and 5 do it. It's complete normal.

I don't think it consumes data as when on vacation and in airplane mode and only connected to data it still gives me my notifications.

EarthDawn · Sep 23, 2012, 04:31 AM

Same thing ...

My girlfriends 4s is on wifi all the time... but when I hit my home button its on 4G and then a couple seconds later kicks to wifi...

Vundu · Sep 23, 2012, 04:38 AM

Your battery would suffer if it kept a constant wifi connection when asleep.

Markyboy81 · Sep 23, 2012, 04:55 AM

Quote:

Originally Posted by Vundu

Your battery would suffer if it kept a constant wifi connection when asleep.

I don't think this is true. When I'm at home I always disable cellular data so that wifi stays on all the time. In my experience this drastically improves battery life. Last night I lost around 4% battery life in 8 hours whilst in standby with wifi connected and cellular data off.

theotherphil · Sep 23, 2012, 05:10 AM

Quote:

Originally Posted by Trey M

I know for a fact my 4S didn't do this. Not saying y'alls didn't, but mine never had this issue. Regardless, the fact that you all have had this issue sort of makes it a non-issue.

Still worries me that notifications are being pushed using cellular data. I just moved from AT&T unlimited to Verizon 6GB data plan so I definitely need to start watching my data!

I know for a fact that your 4S did do this. This is standard behaviour and has been since the very first iPhone. All data whilst in sleep is sent via cellular as the wifi is powered down (unless using airplay etc).

whamboozler · Sep 24, 2012, 09:24 AM

Wifi consumes less battery than LTE and additionally, if you have push notifications on those will use cellular data and use up data from whatever data plan you have. Seems like a big oversight to fallback to LTE here when wifi is available.

jkkool · Dec 19, 2012, 02:12 AM

Quote:

Originally Posted by Trey M

So I've noticed everytime I leave my iphone 5 sleeping for a minute or so and then I press the home button to turn the screen on, LTE is the first default connection on the top left status bar. Then, after 2 seconds or so, the wifi indicator returns, confirming my connection to our router. Has anyone else noticed this? Is the iPhone 5, or maybe just the Verizon iPhone 5, defaulting to other technologies when in sleep mode, therefore causing background data (email, push, notifications) to use my cellular connection instead of wifi?

I have same problem, mine is factory unlocked, the place where im is not even have 3G we are on EDGE, and the problem starts here when i put some big app on update or buy new app and when my phone goes to sleep it stops and when wake it up thinking that app must be downloaded it shows that unable to download app. sometime i have to keep it awake or i tried couple of times leaving it till it goes to sleep by itself then after pressing home button i see Wifi, today ill be checking it on my 4s, i never had this app update problem on 4s.

lookn4wifi · Dec 19, 2012, 07:20 AM

I've noticed this too. iPhone 5 on AT&T.

Trey M · Dec 19, 2012, 11:04 AM

Looks like the latest iOS update has made this a non-issue. Even though I still see the quick change from LTE to wifi in the status bar, there is no 2 second delay, like before, for this to happen. With the update, it seems like a split second. I think the iPhone is communicating every so often with the router just to let it know its still there so that when a user turns on their device, their iPhone is instantly ready to begin consuming data on wifi. I think the update (6.0.2) has really just made wifi a lot more efficient overall.

Sep 23, 2012, 01:55 AM	#1
Trey M macrumors 6502 Join Date: Jul 2011	Wake from sleep wifi issue iPhone 5 So I've noticed everytime I leave my iphone 5 sleeping for a minute or so and then I press the home button to turn the screen on, LTE is the first default connection on the top left status bar. Then, after 2 seconds or so, the wifi indicator returns, confirming my connection to our router. Has anyone else noticed this? Is the iPhone 5, or maybe just the Verizon iPhone 5, defaulting to other technologies when in sleep mode, therefore causing background data (email, push, notifications) to use my cellular connection instead of wifi? __________________ (Mid 2012) 15'' Retina Display Macbook Pro \| 16GB RAM; (Mid 2012) 13'' Macbook Air \| 8GB RAM, 128GB SSD; iPad Mini \| Black 16GB; iPhone 5 \| Black 32GB
	1

Sep 23, 2012, 02:23 AM	#5
Trey M Thread Starter macrumors 6502 Join Date: Jul 2011	I know for a fact my 4S didn't do this. Not saying y'alls didn't, but mine never had this issue. Regardless, the fact that you all have had this issue sort of makes it a non-issue. Still worries me that notifications are being pushed using cellular data. I just moved from AT&T unlimited to Verizon 6GB data plan so I definitely need to start watching my data! __________________ (Mid 2012) 15'' Retina Display Macbook Pro \| 16GB RAM; (Mid 2012) 13'' Macbook Air \| 8GB RAM, 128GB SSD; iPad Mini \| Black 16GB; iPhone 5 \| Black 32GB
	0

Sep 23, 2012, 04:31 AM	#7
EarthDawn macrumors 6502a Join Date: Feb 2008 Location: Long-eye Land, NY	Same thing ... My girlfriends 4s is on wifi all the time... but when I hit my home button its on 4G and then a couple seconds later kicks to wifi... __________________ Bring it down to the corner ....
	0

Dec 19, 2012, 11:04 AM	#14
Trey M Thread Starter macrumors 6502 Join Date: Jul 2011	Looks like the latest iOS update has made this a non-issue. Even though I still see the quick change from LTE to wifi in the status bar, there is no 2 second delay, like before, for this to happen. With the update, it seems like a split second. I think the iPhone is communicating every so often with the router just to let it know its still there so that when a user turns on their device, their iPhone is instantly ready to begin consuming data on wifi. I think the update (6.0.2) has really just made wifi a lot more efficient overall. __________________ (Mid 2012) 15'' Retina Display Macbook Pro \| 16GB RAM; (Mid 2012) 13'' Macbook Air \| 8GB RAM, 128GB SSD; iPad Mini \| Black 16GB; iPhone 5 \| Black 32GB
	0

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Sep 23, 2012, 01:58 AM	#2
Opstech macrumors Demi-God Join Date: Jan 2010 Location: California	Mine is doing this too. I see no need to worry about it. My 4s did it too
	0

Sep 23, 2012, 01:59 AM	#3
iHawaii macrumors member Join Date: Sep 2012	I am on ATT - mine does the same thing... shows LTE for a split second when waking it, then reverts to house wifi. I don't know if any cellular data is being consumed when asleep, but this doesn't affect me - unlimited user. However, I'd be interested to know why this is occurring.
	0

Sep 23, 2012, 02:02 AM	#4
nabechu macrumors 6502 Join Date: Dec 2008	My 4 and 4S do the same thing, its normal. The wifi always shuts off after you put the phone to sleep and reconnects when woken up.
	0

Sep 23, 2012, 04:08 AM	#6
ek9max macrumors regular Join Date: Feb 2011	My 4,4s and 5 do it. It's complete normal. I don't think it consumes data as when on vacation and in airplane mode and only connected to data it still gives me my notifications.
	0

Sep 23, 2012, 04:38 AM	#8
Vundu macrumors 6502a Join Date: Jun 2009 Location: Manchester, UK	Your battery would suffer if it kept a constant wifi connection when asleep.
	0

Sep 24, 2012, 09:24 AM	#11
whamboozler macrumors newbie Join Date: Sep 2012	Wifi consumes less battery than LTE and additionally, if you have push notifications on those will use cellular data and use up data from whatever data plan you have. Seems like a big oversight to fallback to LTE here when wifi is available.
	0

Dec 19, 2012, 07:20 AM	#13
lookn4wifi macrumors regular Join Date: Sep 2012	I've noticed this too. iPhone 5 on AT&T.
	0