You can use your smartphone to improve daily productivity by leveraging built-in tools and apps such as calendars for scheduling, task managers for to-do lists, reminders for important activities, and note-taking apps for quick ideas. Setting focused work intervals with timer or focus apps can enhance concentration, while minimizing distractions through notification controls helps maintain attention. Additionally, using cloud storage ensures access to important files on the go, and voice assistants can help perform tasks hands-free, saving time throughout the day.