Needs Help urgently

How can I hack an Android phone in different location without touching the phone just to gain access to SMS on the victim’s phone.

  1. If I merge a malware with the help of steganography, will it automatically install on the victim’s phone?

Stegenography is all a different concept . You can embed it with an app.

Please what app can I use to embed it?

Ya perfectly said, stenography used only for hiding secret messages. It cannot used for embedding payload(apk) in it