A man taking a picture of himself with his cell phone

Create a realistic scene of a personal trainer in a gym, showcasing them holding a smartphone and displaying its screen. Capture the trainer's engagement as they share information with a client using the mobile device. Pay attention to lighting and composition to achieve authenticity, with natural light illuminating the scene. Showcase the trainer's interaction with the smartphone screen, portraying a moment of guidance or information exchange. Emphasize the trainer's professional demeanor and focus on their client's needs. This image should reflect the modern integration of technology in the fitness industry, while also highlighting the personalized attention that a personal trainer provides.