hack text messages?
It is possible, however it is very hard to exploit an Android device without having some type of physical access at some point. Android has gotten very tight and impenetrable on its security over the past few years. You used to be able to send a malicious media file embedded with malicious code that was designed to exploit the stagefright media library. It took advantaged of the integer overflow vulnerability which involves the input of a value that is out of range which can lead to privilege escalation. This has been patched tightly. Exploitation is possible, but it requires extensive knowledge of the Android system and it’s inner workings and libraries. You can also take advantage of social engineering to convince someone to install a malicious app that will open a back door. You can use a tool called Metasploit to generate an Android app file (.apk) that will open up a back door for remote command execution. However, android displays several warnings for third party apps not from the Play store. It also scans apps for well known vulnerabilities and will warn the user if it is a malicious app. It is pretty much mandatory, at this point, to have physical access to the device to install a backdoor app. Also, it isn’t recommended to use this advice for nefarious intentions