Phone Activity Monitoring Tool

I need a solution to monitor a phone's activity using only its mobile number. The key activities I want to keep an eye on include:

- Calls and messages
- App usage
- Deleted messages on all platforms

Ideal Skills and Experience:
- Expertise in mobile security and monitoring software
- Experience in developing or using phone tracking applications
- Strong technical background in telecommunications and data retrieval

Please provide a detailed proposal on how you plan to accomplish this task, along with any relevant experience in similar projects.