Messenger apps enable you to chat and send files. You download the apps from the App Store (iPhone) or Google Play Store (Android phones) and register as instructed.The messenger app with the most users worldwide/in Switzerland is WhatsApp(opens in new tab). Because of its opaque privacy policy, we recommend these safer alternatives (according to Konsumentenschutz(opens in new tab) or SRF(opens in new tab)):
Threema(opens in new tab)
Signal(opens in new tab)
TeleGuard(opens in new tab)