Does anyone else's iPhone 5S disconnect from wifi randomly when the phone is locked?

Discussion in 'iPhone' started by Frankied22, Jan 23, 2014.

  1. Frankied22 macrumors 68000

    Frankied22

    Joined:
    Nov 24, 2010
    #1
    So I currently dropped my cell service and am using my iPhone 5S with nothing but wifi and I've starting noticing that my phone drops wifi when the phone is locked. This can't be normal right? I was under the impression iOS devices remain connected to wifi even when the phone is locked, so you can get updates or notifications in the background. Has anyone else experienced this? It's annoying because my phone will be locked and I won't get any messages until I turn on and unlock the phone.
     
  2. aristobrat macrumors G5

    Joined:
    Oct 14, 2005
    #2
    I've noticed lately when I'm at work and my iPhone screen turns of for a notification, I've noticed the phone was on LTE instead of wifi, like it should be.

    If I unlock the phone and start using it, it'll switch to wifi.

    Not just me huh? Lol
     
  3. The Doctor11 macrumors 603

    The Doctor11

    Joined:
    Dec 15, 2013
    Location:
    New York
    #4
    This happens to me all the time on my iPhone 4! It bothers me so much!
     
  4. cynics macrumors G4

    Joined:
    Jan 8, 2012
    #5
    My 4S stays connected. I only know this because I AirPlay pandora constantly and AirPlay requires wifi.

    That could be because I start it prior to locking the device.

    Also iCloud back ups occur when the device is locked, plugged in and on wifi. So it should at least know it can use wifi.
     
  5. TribeFan1 macrumors regular

    TribeFan1

    Joined:
    Oct 1, 2013
    #6
    I have the same issues with my 5S. The wifi constantly drops randomly and it is pretty annoying. I am going to assume it is just for battery saving
     
  6. The Doctor11 macrumors 603

    The Doctor11

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    Dec 15, 2013
    Location:
    New York
    #7
    No cellar data takes more battery
     
  7. EM2013 macrumors 65816

    EM2013

    Joined:
    Sep 2, 2013
    #8
    The only time this happens to me is when my battery is low around 10% other than that it's always connected to my wifi.
     
  8. chocolate7 macrumors newbie

    Joined:
    Jan 24, 2014
    #9
    I unlock the phone and start using it, it'll switch to wifi.
     
  9. nburwell macrumors 68040

    nburwell

    Joined:
    May 6, 2008
    Location:
    PHL
    #10
    This happens to me when I'm connected to my work wifi. At home, it's always connected. However, when I unlock the phone at work, it immediately connects to the network.
     
  10. alent1234 macrumors 603

    Joined:
    Jun 19, 2009
    #11
    ios has been this way for years
    its done to save battery
     
  11. aristobrat macrumors G5

    Joined:
    Oct 14, 2005
    #12
    How?

    Connecting to WiFi requires less battery than connecting to cellular data.
     
  12. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #13
    Doesn't seem like the existing threads on this have been able to really answer that question either.
     
  13. zorinlynx macrumors 601

    zorinlynx

    Joined:
    May 31, 2007
    Location:
    Florida, USA
    #14
    It depends on your router. Some routers support WiFi sleep mode, which allows your phone to keep Wifi on without burning a lot of power. If it does, your phone will keep WiFi enabled.

    Others do not, so the phone shuts down WiFi to save battery. However, past experience has shown the phone will remain on WiFi no matter what if it doesn't have a cellular data connection. This may have changed, though; that was a couple years ago. :)
     
  14. wordoflife macrumors 604

    wordoflife

    Joined:
    Jul 6, 2009
    #15
    Cellular data allows you to receive and send MMS/Group SMS messages and access visual voicemail. I suspect that the phone stays connected to cellular data as to not take away these features. I think it would be pretty annoying that I couldn't use those features on WiFi.

    Anyways, as for all of my iOS devices. I find that it reconnects to WiFi right when I turn on the screen.
     
  15. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #16
    But it could be connected to both as is essentially the case when you are using the phone and you are on WiFi.
     
  16. wordoflife macrumors 604

    wordoflife

    Joined:
    Jul 6, 2009
    #17
    What is the point of being connected to both when not using the device?
     
  17. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #18
    Well, that's what it seems like people are asking about, why isn't it staying connected to WiFi when it's locked. For some reason they seem to want it to be and even expect it to be.
     
  18. Brian Y macrumors 68040

    Joined:
    Oct 21, 2012
    #19
    Yep, WiFi is crap on my 5S. Don't get me wrong, when it's connected it's fast, but not not very reliable.

    For example, we have 2 wireless access points - one on each floor due to having weak ceilings. When walking up the stairs, every other device can switch between the APs without interruption. The 5S hangs onto the old AP as long as possible (i.e. until it drops the connection) THEN it will disconnect, and connect to the upstairs access point.

    Oddly enough - it works fine on my retina iPad mini, and every other device - just the iPhone has problems.
     
  19. Max(IT) Suspended

    Max(IT)

    Joined:
    Dec 8, 2009
    Location:
    Italy
    #20
    I really don't know if my iPhone drops wifi when locked and not connected to the plug, but the real question is: how can you check it ? If it is locked, the screen is off and you can't check ...
    Surely when I unlock it the wifi connection is already on, so I don't think it drops wifi.
     
  20. Frankied22 thread starter macrumors 68000

    Frankied22

    Joined:
    Nov 24, 2010
    #21

    I know because I don't receive any messages or motivations. Then when I unlock it there's no wifi signal for a few seconds because it's reconnecting. Once it's reconnected all my messages and notifications come in.
     
  21. Max(IT) Suspended

    Max(IT)

    Joined:
    Dec 8, 2009
    Location:
    Italy
    #22
    It doesn't happen on my iPhone 5S.
    Is it maybe the router/AP ?
     
  22. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #23
    Thats odd since without any other radio being active and just WiFi being on it should stay connected to it even when it's locked like an iPod Touch or a WiFi only iPad would.
     
  23. ugcop macrumors 6502a

    ugcop

    Joined:
    Mar 15, 2012
    Location:
    Traveling @ Warp Speed ...... USA
    #24
    It's primary purpose is to be a phone unlike iPod or iPad. The phone radio stays on and the wifi shuts down the same as an iPad cellular.
     
  24. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #25
    Not if the cell connection is actually turned off I would think, as seems to be the case for the OP.
     

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