It is secure. If somebody takes ones phone, the messages are only readable for the owner. Plus the encryption prevents conversation to be registered/read on the way between sender and receptor. There is possibility for groupe chat and all emoticons available on WhatsApp are on Signal as well. At the end really easy to install and use or set. Just the best for me.
Some small quality of life features missing WhatsApp is spying for Facebook. Hangouts is not even encrypted (thus is spying for NSA). Therefore I compare Signal to Threema, which has similar main features: good encryption, no spying. Exchanging contacts is a pain in threema, Signal solved that part much better. Signal can also be used on multiple devices (phone and laptop/desktop). However, Signal does not display when a text was actually read by the recipient. That is better handled in Threema. Seems not that hard to add such a feature...
Now with encrypted phone calls! Possibly they've always had them, but I love the passwords that prove no man in the middle attacks. Company servers keep no info other than your sign up date. WhatsApp=Facebook so use this and keep your meta privacy...
Not at all Acceptable. Restricts functionality of other apps Initially I liked it, also uninstalled all messengers/SMS apps & made it the default SMS app. But now really struggling while sending invitation/SMS from other apps. Seems the developers have intentionally restricted this features. Even this app is not allowing to take screen shots of SMSes. May b good from Privacy/Security point of view but not allowing to send links from other apps in SMS, it's not at all acceptable.
Been using Signal as both an encrypted message/call channel and default SMS app. It works without complex setup screens, operates though an encrypted channel with other Signal users, and falls back gracefully if there's no encryption on the other end. This really isn't comparable to Whatsup or (lord no) Hangouts, so some features might or might not be available. The focus is and should rightfully remain on openness and security, even if a bit more polished desktop integration would be welcome. But really, good job!
Overall quite good In my experience, it serves as WhatsApp plus regular SMS transceiver. My only dissatisfaction has to do with how it handles regular SMS; there is no room for delayed transmission of SMS especially if the recipient isn't available. It just fails to deliver, thereby wasting SMS charges.
Changes in 3.20.4:
★ Support for disappearing messages.
★ New safety numbers format.
★ Bug fixes and performance improvements.
SMS Messenger with Schedule SMS, Halloween Theme, Backup, Restore & Private Box