Need help with a remote keylogger app. For s2 phone
Greetings, this is not a good path to go down. In my experience your instincts are normally right.
Not only is is not the moral thing to do but very illegal to wiretap her device, fine minimum start at $10k. That being said it is pretty simple to do on your device.
I don't think that you really can do that but there are many different ways then this. You can use hardware hacking mainly on Kali and you can even divert her calls to your phone. If the phone is locked another way(You must have her phone on your hands :) ) is to go to the recovery mode by switching the phone off(e.p removing the battery) and power it back up again by pressing the power key and the volume keys all together and it's going to be something similar to computer's BIOS. if you have problems, best way is to talk with her ;)