[Bish0pQ]

It's certainly possible, but you do need access to the handset to Install monitoring software.

Don't believe all the sites floating around the net that claim that you can Install the software remotely. It cannot be done.

I disagree. It is possible to Hijack the device when it's connected to the home WIFI. After hijacking the device you can upload a malicious .apk file to the phone and execute it. Than you could use a RAT for listening and intercepting messages from the phone.

It requires a lot of skill but I don't agree that it is impossible. You could even send a malicious file through bluetooth.

So @OP you can do this but it requires a lot of skill. It is illegal to hijack a phone or break into it. In any case, it's illegal.