Does exposing my iphone 15 plus front camera directly opposite to sunlight damage my sensor ? I exposed it for 6-7 secs

It's unlikely that briefly exposing your iPhone 15 Plus front camera directly to sunlight for 6-7 seconds will cause permanent damage. However, it's generally not recommended to point your camera directly at the sun for several reasons:

• Intense heat: Sunlight concentrates a lot of heat, and while your phone's camera is built to withstand normal use, prolonged exposure to extreme heat could potentially damage the sensor or other components.
• Sensor saturation: The sun emits an incredible amount of light. While HDR is designed to handle a wider range of light, the sensor itself might be overloaded in such a situation, leading to temporary artifacts or bright spots in photos.

If you're concerned about damaging your camera, it's best to avoid pointing it directly at the sun. Here are some safer ways to test your HDR function:

• Take a photo of a high-contrast scene, such as a landscape with both bright and shadowy areas.
• Use a well-lit indoor environment with a variety of light sources.

If you notice any issues with your camera after accidentally pointing it at the sun, such as blurry photos or strange artifacts, it's best to restart your phone first. A simple restart can sometimes resolve temporary glitches. If the problem persists, then contacting Apple Support is recommended.