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1. en.wikipedia.org › wiki › Comparison_of_crossComparison of cross-platform instant messaging clients

   en.wikipedia.org › wiki › Comparison_of_cross

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   14 hours ago · For some features: secret chats, voice and video calls, and voice chats in groups: No No No Tencent QQ: No: No No No No Threema: No A valid phone number or email address is not required for registration & login. However, the mobile app serves as the primary device, due to the end-to-end encryption architecture. Yes No No No