Starting from August 2019, all apps published on Google Play will need to support 64-bit architectures. Adding a 64-bit version provides performance improvements, makes way for future innovation, and sets you up for devices with 64-bit-only hardware.
We already implemented all the necessary changes in our VOIP SIP SDK for Android – please download the important update of SDK for Android here: https://voipsipsdk.com/products/voip-sip-sdk-for-android/download