4Messages is completely ad-free and open source so you don't have to worry about your privacy. Minimalistic interface, yet intuitive and customizable. You can paint it in any colors. Has four themes: White, Gray, Dark and Black. Features: - Dual-SIM and Multi-SIM phones are fully supported - Backup and Restore your messages - Support for group chats - You can block conversations and manage your blacklist, or automatically filter spam using the "Should I reply?" - Supports Wear OS (Android Wear), TalkBack and Samsung Voice Assistant. Based on QKSMS.