Signal provides a SHA256 checksum on their download page at https://signal.org/android/apk/ https://signal.org/android/apk/ Signal works on platforms such as

Signal provides a SHA256 checksum on their download page at https://signal.org/android/apk/ https://signal.org/android/apk/ Signal works on platforms such as GrapheneOS without the Google ecosystem. You're right regarding the phone number. I consider it a necessary compromise. Look at the spam problem that email has.