商品/服務 軟件同硬件 Signal 4.0 4.0 out of 5 stars (based on 4 reviews) 好到極0%好到極100%平均0%可憐0%可怕0% 由特罗姆11/05/2020 Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and 閱讀更多。