Verizon wifi calling limitations?

Discussion in 'iPhone' started by xraydoc, Mar 22, 2016.

  1. xraydoc macrumors 604

    xraydoc

    Joined:
    Oct 9, 2005
    Location:
    192.168.1.1
    #1
    As a Verizon customer, the release of iOS 9.3 brings my first hands-on experience with wifi calling.

    I noticed at home on wifi it says "VZW WIFI" as the carrier name in the top left corner as expected. Today, I'm at a Barnes & Noble bookstore on their free AT&T wifi. Though I have a working wifi signal (as evidenced by this post), the carrier name has not changed, so I'm presuming something is stopping the phone from switching to wifi for voice.

    So, if anyone knows, what are the conditions that tell iOS that it can switch to wifi for voice versus LTE (or, god forbid, crappy Verizon 3G)??
     
  2. olepi macrumors newbie

    Joined:
    Oct 11, 2011
    #2
    Turn airplane mode on and then turn your wireless on. That usually forces it to wifi calling. Least that's what I do here at work to help with battery life.
     
  3. kch50428 macrumors 6502

    kch50428

    Joined:
    Oct 30, 2015
    Location:
    North Iowa
    #3
    Near as I can tell, Verizon's wifi calling will stay on cellular until the cellular signal goes below two full dots/bars... or -100 or so if you have test mode enabled... and switches back to cellular when signal is something better than 2+ dots/bars signal - or somewhere in the -90s for those using test mode - I haven't been able to nail it down, but I believe there's some sort of background assessment of the quality of the wifi connection going on too...
     
  4. xraydoc thread starter macrumors 604

    xraydoc

    Joined:
    Oct 9, 2005
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    #4
    Are there specific network ports that, if blocked, will disable wifi calling?
    --- Post Merged, Mar 22, 2016 ---
    I have good cell signal at my house, so I don't think that's it. When I first enabled it, the phone hopped right on to wifi.
     
  5. timeconsumer macrumors 65816

    timeconsumer

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    Portland
    #5
  6. xraydoc thread starter macrumors 604

    xraydoc

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    192.168.1.1
    #6
  7. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #7
    Yup, generally that's how it is.
     

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