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Re: [Linphone-users] linphone often unavailable

From: Kamen Tomov
Subject: Re: [Linphone-users] linphone often unavailable
Date: Tue, 14 Mar 2023 16:00:53 +0200

Dear Sylvain,
Thanks for your help!

Dear Julien,
Thanks you as well!

The thing is that sometimes even though my phone is locked I receive SIP calls. How is this possible if my SIP provider can not send me a Push Notification?

Is the fact that other SIP service providers beside Linphone can not send push notifications documented somewhere?

-- best

На пн, 13.03.2023 г. в 12:51 ч. Sylvain Berfini <> написа:

Hi Kamen,

I checked your logs and I confirm the background service does it jobs, your device has been connected from 2023-03-08 18:36:59 to 2023-03-10 16:19:21.
But in your logs there is no incoming call from that period of time, so either your logs aren't representative of the issue or the problem lies in the proxy server that doesn't send you the INVITE.


Sylvain Berfini
Head of Mobile & Desktop Apps Department

+33 (0)9 52 63 65 05

Discover our solutions in 3 minutes!

Belledonne Communications, the company behind the Linphone project

Le 13/03/2023 à 11:32, a écrit :

Dear Kamen,


Supporting push notifications has become compulsory since iOS 10 and on most recent Android phones to receive incoming calls and messages when the app is not active in foreground.

To wake up a VoIP app when an incoming call or an incoming message is received, the server must send a push notification request to Apple/Google's PN server. For security reasons, Apple/Google doesn't allow everybody to send push notifications to their servers. There are private keys and certificates to protect the whole process.


We have decided not to share Linphone’s push notification ID with third party services, and this is why the stock Linphone app can only receive push notifications sent from our service.


The background mode is not a guarantee that the phone will never kill the app.


Best regards,


Julien Favre-Bulle


De : <> De la part de Kamen Tomov
Envoyé : vendredi 10 mars 2023 15:59
À :
Objet : [Linphone-users] linphone often unavailable




I'm using linphone with a SIP account and I often have missed calls because I do not get a notification from the app. I run Android 13 on a Galaxy S22. 


I've set-up Linphone to never sleep and to not take out permissions that are not used. The Linphone  Service is running all the time.


I have activated the debug logs. Here they are:



Your help will be appreciated.

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