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Problem WiFi while iPhone 4S is in screen lock

I bought an iPhone last week, and I've realized that when the iPhone screen is locked wifi disconnects.

If I have also connected 3G, the 3G connection appears, and if I have not connected 3G is none connection.


And in milliseconds reappears wifi icon again.



Is it normal?


Thank you very much.



*I heard something about it, but it happened in old iPhones.

iPhone 4S, iOS 6

Posted on Sep 23, 2012 8:09 AM

Reply
127 replies

Sep 28, 2012 2:13 AM in response to alicia226

I am having the same issue.


When my iPad and iPhone were on iOS5 they didn't disconnect from the WiFi ever.


Now that I've upgraded to iOS6 my iPad disconnects from WiFi after being locked for a minute or so. This is happening when unplugged or plugged into mains. My iPhone still never disconnects despite being on iOS6 which makes me think it's a bug and no intentional.


It is annoying and makes the iPad useless effectively as I get no notifications or emails when it's locked, I have to turn it on and check, rediculous.


Has anyone found a solution and has Apple responded at all to the issue?


Thanks,

Ryan

Sep 28, 2012 9:57 AM in response to alicia226

Hi,


I also have the same problem on my iPhone 4 since upgrading to iOS 6. The wi-fi drops at some point after the screen locks. When I unlock the phone it reconnects to the wi-fi and the iMessages all flood in at the same time, so I am definitely not getting notifications while the phone is locked. This problem does not occur when plugged into a power source.


I performed some network ping tests to my phone and on average 20 seconds after locking it the ping replies stop.


Looks to me like a change in iOS 6 to try and squeeze a bit more battery life out by making the wifi shut down!


My fiend has an iPhone 5 with the same problem. It certainly appears to be a software issue with iOS6. Never had this problem on iOS5.


Hope the next update is not far away.

Sep 28, 2012 3:52 PM in response to pavclarke

I am just adding one more comment so hopefully Apple fix this issue in the next update to iOS6.


I first noticed this as to connect to my job's wifi I have to take an extra step to access it. I started to notice that after locking my iphone 5 and placing it in my pocket, leaving it there for some time and then unlocking it, it always showed LTE and never went back to wifi (unless I sign in again). This never happened with my iphone 4 with iOS5 (before somebody says that this is normal behaivor for all smartphones and iOS' versions).


I did run a ping test aswell to the IP assigned to my iphone and it consistently stopped replying after about 60 seconds (clarification: ping test was done at home where I have no issues connecting to wifi).


Agree that it is most likely a software issue but I am not sure if you are going to save battery life by stopping wifi and keeping 4G/LTE working most of the time. It will add to your monthly data usage though.

Sep 29, 2012 12:35 AM in response to gonpin

Infact I also think that it not save the battery, I have wifi on, data cellular off, and notifications activate, I think that when telephone is in standby it want connect, and if there isn't a connection, it discharge. Infact my iPhone, when it is in standby, lost 1% every hour. I want that they resolve this issue, because it is a big bug

Sep 29, 2012 12:09 PM in response to alicia226

Hi guys, I had the very same problem you are all facing, but now I have te feeling that the problem has been resolved. I did a restore of my iphone and reinstalled iTunes. Now when I lock my iPhone the wifi seems to disconnect after a while, but hitting the unlock button, wifi pops up right away AND I'm receiving notifications again. So I suggest you try to do the same 🙂 and re-evaluate.


Hope it helps guys.


Greetz!

Sep 30, 2012 8:56 PM in response to B. Tim

B. Tim, I don't think anyone is having trouble receiving notifications after the wifi symbol comes back. The problem is that we cannot receive notifications immediately when they should come. Rather, we have to manually unlock the iPhone (5 in my case, as well as an iPad 2) in order to "check" to see if we might happened to have received an iMessage, email, etc.

Oct 1, 2012 11:29 AM in response to chadwick103

Hey Chadwick103,


I know exactly what you mean because I had the same thing. But since I restored the phone, I connects instantly to Wifi whenever i touch the unlock button, while it didn't do that before (the phone had to serach like a couple of esconds for the connection). And I'm also receiving notifications again while my phone is locked, cellular data is off, but wifi is on. So it DID help 🙂 I hope you understand what I'm trying to say.

Problem WiFi while iPhone 4S is in screen lock

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