If you downloaded either of these Android apps, delete them now. The two fake messaging apps were designed to look just like Telegram and Signal. However, Google has removed them from the Android Play Store, citing them as malicious apps capable of stealing your data.
The two apps in question are called Signal Plus Messenger and FlyGram. The former was active on the Play Store for over nine months and downloaded roughly 100 times before Google took it down. FlyGram was created by the same group, and was removed back in 2021. However, both apps remain available on third-party websites and via the Samsung app store.