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Great, we have WiFi Calling, but wifi is off during standby?!

silverblack

silverblack

macrumors 68030
Original poster
Nov 27, 2007
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Apple is offering the WiFi Calling with more carriers supporting it.
https://support.apple.com/en-ca/HT203032

This is wonderful. However, iPhones are designed to turn off wifi during standby (sleep) to conserve battery. This is not a problem when making a call, because wifi will reconnect as soon as you unlock the screen. But...

How is the phone supposed to receive calls when it disconnects from wifi, and have no cellular signals (the whole point of needing WiFi Calling in the first place)?

Am I missing something here?
 
silverblack said:
Apple is offering the WiFi Calling with more carriers supporting it.
https://support.apple.com/en-ca/HT203032

This is wonderful. However, iPhones are designed to turn off wifi during standby (sleep) to conserve battery. This is not a problem when making a call, because wifi will reconnect as soon as you unlock the screen. But...

How is the phone supposed to receive calls when it disconnects from wifi, and have no cellular signals (the whole point of needing WiFi Calling in the first place)?

Am I missing something here?
Click to expand...

Who says WIFI is turned off during standby?
 
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I think it (wifi) stays on when your phone has wifi calling connected to the carrier. At least that is what I have seen on mine.
 
I am no iOS programmer here. But I believe it only connects intermittently to the 3G/LTE or wifi. Just a guess.
 
If wifi is off in standby, how do push notifications come in immediately? I can send an email to myself and immediately get a push notification on standby.
 
bpeeps said:
You are missing, quite possibly, everything. This was a feature for iOS6 and below.
Click to expand...

I don't have a response to this. But here's the behaviour of my iPhone:

- put phone on airplane mode, and then turned on wifi
- phone switches to WiFi Calling (showing Wifi Rogers on upper left corner for me)
- put phone on standby (screen off) and not connected to power
- wait 10, 15 mins, called my iPhone with and another phone
- iPhone never rang, went to voicemail

Anyone else experiencing this?
 
silverblack said:
I don't have a response to this. But here's the behaviour of my iPhone:

- put phone on airplane mode, and then turned on wifi
- phone switches to WiFi Calling (showing Wifi Rogers on upper left corner for me)
- put phone on standby (screen off) and not connected to power
- wait 10, 15 mins, called my iPhone with and another phone
- iPhone never rang, went to voicemail

Anyone else experiencing this?
Click to expand...

I do the same except my phone rings. I'm on T-Mobile.
 
silverblack said:
I don't have a response to this. But here's the behaviour of my iPhone:

- put phone on airplane mode, and then turned on wifi
- phone switches to WiFi Calling (showing Wifi Rogers on upper left corner for me)
- put phone on standby (screen off) and not connected to power
- wait 10, 15 mins, called my iPhone with and another phone
- iPhone never rang, went to voicemail

Anyone else experiencing this?
Click to expand...
Nope. I'm on my iPad right now and my iPhone 6 Plus is lying on the table on standby. I press the sleep/wake button and it shows T-Mobile Wi-Fi. I receive a text it shows T-mobile Wi-Fi.
 
Thanks for checking and reporting.
The problem could be just with Rogers, or even just my phone/wifi network.
Glad to hear it's working for others.
 
CEmajr said:
Nope. I'm on my iPad right now and my iPhone 6 Plus is lying on the table on standby. I press the sleep/wake button and it shows T-Mobile Wi-Fi. I receive a text it shows T-mobile Wi-Fi.
Click to expand...

ive had wifi calling since Tmo had it on last years beta, never had what OP is stating, in fact its been basically perfect..must be something with the carrier
 
silverblack said:
I don't have a response to this. But here's the behaviour of my iPhone:

- put phone on airplane mode, and then turned on wifi
- phone switches to WiFi Calling (showing Wifi Rogers on upper left corner for me)
- put phone on standby (screen off) and not connected to power
- wait 10, 15 mins, called my iPhone with and another phone
- iPhone never rang, went to voicemail

Anyone else experiencing this?
Click to expand...
If you only have WiFi enabled then it might stay on even in standby since there's nothing (like mobile/cellular connection) to fall back on.
oldwren said:
No. My iPad is WiFi only and still receives push notifications instantly. Over WiFi.

/thread
Click to expand...
That's because it's WiFi-only, it doesn't work the same way with an iPhone that also has a mobile/cellular connection.
 
Thanks for all the suggestions. Another complication is my wifi network, which is an enterprise network. It may be designed to cut off connection with devices on standby, so it can recycle the dynamic IPs for other devices.
 
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