http://tor4sqofvveg2hrrreljy3ypa5hxn3a7q6haqktj4ohtta6f23ex74yd.onion/blog/is-someone-spying-on-my-phone-how-to-know-and-protect-yourself/index.html
Yes, spyware can be installed remotely on your phone. This can happen if you click on a suspicious link or download a malicious app. What should I do if I suspect my phone is being spied on? If you suspect that your phone is being spied on, you should take steps to secure it.