iPhone drops Wi-Fi when locked

timtax

macrumors newbie
Original poster
Jul 27, 2012
13
0
Belgium
Since I'm using iOS 6, i noticed when I'm on Wifi and I lock my iPhone, the Wifi drops after a minute or so. That's quite annoying since I'm not able to receive FaceTime calls then. Do any of you know how to resolve this? (turning off "use cellular data for Facetime" didn't help).

Thanks in advance.
 

dotme

macrumors 6502a
Oct 18, 2011
910
74
Iowa
Since I'm using iOS 6, i noticed when I'm on Wifi and I lock my iPhone, the Wifi drops after a minute or so. That's quite annoying since I'm not able to receive FaceTime calls then. Do any of you know how to resolve this? (turning off "use cellular data for Facetime" didn't help).

Thanks in advance.
iPhones have dropped WiFi when locked for quite a long time. It's normal. Never thought about the Facetime call thing though. Are you sure you can't initiate the call if the other party's iPhone is sleeping?
 

pdqgp

macrumors 68020
Mar 23, 2010
2,130
5,432
is your passcode taking effect? in other words when you're phone is asleep is the screen locked? I'm not sure if it's always been like this as we don't use face time much, but if my lock screen is enabled and I need to type my passcode in, you're correct, a face time call won't be received.

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iPhones have dropped WiFi when locked for quite a long time. It's normal. Never thought about the Facetime call thing though. Are you sure you can't initiate the call if the other party's iPhone is sleeping?
my wife doesn't use a passcode lock on her phone. her phone is in sleep mode yet it will receive a face time call. Seems to be only if the pass lock is needed will it not receive a face time call.
 

timtax

macrumors newbie
Original poster
Jul 27, 2012
13
0
Belgium
is your passcode taking effect? in other words when you're phone is asleep is the screen locked? I'm not sure if it's always been like this as we don't use face time much, but if my lock screen is enabled and I need to type my passcode in, you're correct, a face time call won't be received.

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my wife doesn't use a passcode lock on her phone. her phone is in sleep mode yet it will receive a face time call. Seems to be only if the pass lock is needed will it not receive a face time call.
I don't use a passcode lock, and I was pretty sure in iOS 5 my wifi was almost instantly on when i unlocked the phone. Now it seems something is not entirely right... but thanks!
 

old-wiz

macrumors G3
Mar 26, 2008
8,318
221
West Suburban Boston Ma
I don't use a passcode lock, and I was pretty sure in iOS 5 my wifi was almost instantly on when i unlocked the phone. Now it seems something is not entirely right... but thanks!
I would expect the iPhone to drop the wi-fi when it sleeps; the Macs do the same thing.

Maybe what you are seeing is just IOS6 taking longer to re-establish the wi-fi connection?
 

KnightWRX

macrumors Pentium
Jan 28, 2009
15,043
4
Quebec, Canada
I don't use a passcode lock, and I was pretty sure in iOS 5 my wifi was almost instantly on when i unlocked the phone. Now it seems something is not entirely right... but thanks!
My iPhone has dropped wifi when sleeping forever. I know because I have a bug between ISC DHCPd and iOS that when coming back from sleep, the iPhone never manages to renew its address lease properly and ends up off the network until a "wifi off / wifi on". Been doing that since I've owned my 3GS on iOS 3.
 

timtax

macrumors newbie
Original poster
Jul 27, 2012
13
0
Belgium
I would expect the iPhone to drop the wi-fi when it sleeps; the Macs do the same thing.

Maybe what you are seeing is just IOS6 taking longer to re-establish the wi-fi connection?
Something is just not right. When my iPhone is locked and all cellular data is disabled, but Wifi is on, I should still be able to receive FaceTime calls and iMessages and that is not the case since the Wifi is switching off. When I unlock, Wifi is instantly back on, but that doesn't help me in getting messages or receiving FaceTime calls.. :(
 

NapoleonIV

macrumors member
Oct 14, 2011
64
31
I am having this same problem. In the past, if I left the wifi on, it would receive push notifications all night. However, I have since purchased a data plan, and beginning after I first turned on mobile data in my phone, it has been dropping the wifi connection when locked.
 

BRyken

macrumors 6502
Jul 17, 2008
267
0
I noticed this a lot more with iOS 6.0 but haven't noticed it since iOS 6.0.1
 

Gav2k

macrumors G3
Jul 24, 2009
9,218
1,585
Op your misunderstanding how iMessage and face time work.

1, wifi has always turned off when the phone sleeps unless personal hotspot is being used.

2, when a FaceTime call comes in a wake packet is sent to your phone. This wakes the phone makes it ring and establishes a wifi connection. It's always been like this.
 

jabingla2810

macrumors 68020
Oct 15, 2008
2,269
935
Op your misunderstanding how iMessage and face time work.

1, wifi has always turned off when the phone sleeps unless personal hotspot is being used.

2, when a FaceTime call comes in a wake packet is sent to your phone. This wakes the phone makes it ring and establishes a wifi connection. It's always been like this.
This.

WiFi will come on with it is needed.

Example, Photostream requires WiFi but still updates while the phone is asleep.
 

Prawnstar69

macrumors regular
Sep 27, 2012
147
1
the wifi turns on when needed, even my iphone drops wifi when locked unless im downloading something
 

Zero!sOne

macrumors member
Apr 20, 2010
40
0
Pennsylvania
Op your misunderstanding how iMessage and face time work.

1, wifi has always turned off when the phone sleeps unless personal hotspot is being used.

2, when a FaceTime call comes in a wake packet is sent to your phone. This wakes the phone makes it ring and establishes a wifi connection. It's always been like this.
This is correct, but if the OP has all cellular data disabled, can that wake packet make its way to his phone while wifi is disabled?
 

clauzzz203

macrumors 6502
Sep 18, 2012
430
415
iphone 4, 6.0.1 software, if i set cellular off, wifi on it receives all notifications while sleeping
 

dhlizard

macrumors G4
Mar 16, 2009
10,213
118
The Jailbreak Community
What happens if the phone does not keep the Wifi connection "active" to avoid battery drain.
But, if your phone is working correctly, any incoming task (like a FaceTime call) will immediately re-activate the Wifi connection.
 

big samm

macrumors 65816
Oct 27, 2008
1,306
204
I remember before ios 5 the delay it took to fall back on 3G was greater than 1 min...
 

Stuke00

macrumors 68000
Oct 11, 2011
1,674
74
Collinsville,IL
Since I'm using iOS 6, i noticed when I'm on Wifi and I lock my iPhone, the Wifi drops after a minute or so. That's quite annoying since I'm not able to receive FaceTime calls then. Do any of you know how to resolve this? (turning off "use cellular data for Facetime" didn't help).

Thanks in advance.
Are you sure you can't receive facetime calls? On my 4S and iOS 5.1 I would still get a facetime call if I was out at the store on 3G or something. But if I tried to answer it I would get an error. I imagine the functionality would still be the same, you would get the call and by the time you answer it your Wifi should be connected and you can take the call.