To effectively reduce the resolution and file size of the photos taken with your OnePlus Nord CE 5G without significantly compromising on quality, you can use several methods. Firstly, navigate to your camera settings and look for options to adjust the photo resolution. Most smartphones offer different resolutions, so selecting a lower resolution for your photos can help save storage space. For instance, choosing a medium or lower resolution mode instead of the maximum setting can considerably reduce both the size of the files and their dimensions. Additionally, you can explore the ‘Image Quality’ settings and opt for formats like JPEG instead of RAW, as JPEG files are typically smaller while still retaining good quality.

Another effective approach is to utilize photo editing applications that allow batch processing and compression of images. Apps like ‘Photo Compress’ can intelligently reduce file sizes by removing unnecessary metadata and applying various compression algorithms without a noticeable loss in quality. Furthermore, consider backing up your images to a cloud service such as Google Photos, which also offers the option to back up photos in a ‘Storage Saver’ mode, automatically compressing them to save space. Lastly, regularly reviewing and deleting photos you no longer need can also help manage your storage effectively.