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Re: [Linphone-users] Linphone won't run in background on iOS or announce

From: Daniel Garner
Subject: Re: [Linphone-users] Linphone won't run in background on iOS or announce when calls arrive
Date: Mon, 8 Aug 2022 08:46:09 +0000

Hi Germán,


Thank you for this reply, it is valuable in that it confirms that we can’t use Linphone in its current form.


I have also cross posted your response to the 3CX customer forum so that we have a record of the answer over there.


Have a good day,




Daniel Garner Head of IT
Adnams plc. The Old Gravel Pits, Halesworth Road, Reydon, Southwold, Suffolk IP18 6SG
Tel No: 01502 727257

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From: Linphone-users <> On Behalf Of German Cancio
Sent: 07 August 2022 12:22
Subject: Re: [Linphone-users] Linphone won't run in background on iOS or announce when calls arrive




if you are connecting with Linphone iOS to your own PBX (and not, you need the PBX to issue push notifications. See the following for more information:





This also requires your own custom compiled version of the Linphone iOS client that will use your own Apple push notification (APNS) credentials. On Android, you can use the stock Linphone app from Google Play by activating “background mode” (Linphone Settings -> Advanced -> Background mode) - where the app will continue to run in the background, and stay connected with the SIP server. That feature isn’t available on iOS as Apple is more restrictive with apps running in the background.


Cheers, Germán



On 6 Aug 2022, at 20:47, Karl Logue <> wrote:


It seems my problem is exactly the same as Daniel Garner's. iOS 15.6, Linphone 4.6.5


I've tried all of the following, but nothing has worked:

This is an unlocked iPhone SE. I've reset the phone, uninstalled and reinstalled Linphone many times. I checked Background Apps, and Linphone is there and enabled. I've cleared the network connections (as recommended by a few websites I found). Further, Linphone will not even ring the telephone even when it is in the foreground. It only vibrates.  Push is enabled on Linphone.


A technical bit worth noting--On Android, Linphone installs a service that is constantly visible and keeps the phone in contact with the Voip service. On iOS, though, Linphone does not do this. I read that iOS has limitations that prevent that solution, but I have no idea why iOS would be designed that way. 


Also, there is extremely little help through Google searches which leads me to think this might be a relatively new problem. I can't imagine with over half a million users of Linphone that only Daniel Garner and I have been the only ones to see it.


If I find a resolution I'll reply to this email.



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