Use APKPure App
Get Galaxy SIP Accounts old version APK for Android
Cette application permet de soutenir la téléphonie SIP pour Android 8 appareils (Oreo).
The app should let you configure the SIP accounts (again) and let's you configure whether to receive incoming SIP calls. Making SIP calls outgoing from the native dialer depends on the individual Android Version customized by the phone manufacturer.
The app is free without any ads. There is no guarantee to be fit for any purpose. Future Android OS updates may disable the SIP support for the native telephony app fully.
You should run this app only with Android 8 / Oreo.
NOTE: This application is for configuration and receiving SIP calls. If you have difficulties with making SIP calls, pease have a look at "Galaxy SIP Outbound Call Helper".