[throw2016]

Those who depend on anonymity and security in any serious way should think carefully about using technology. Two whistle blowers in a row have been compromised in the last few months and are now in prison in their communication with theintercept.

Don't trust anything you read online, if you need guidance try to reach out to trusted and well regarded experts in privacy and security ecosystems and do it in the real world face to face, not online. Cryptome has a decent faq on this.

Signal is connected to your phone number. That's game over right there and then on any claims to security and anonymity. Things directly connected to your identity in an insecure OS as Android cannot deliver security or anonymity, and its dangerous to lull others into a false sense of security.