Google Camera's HDR+ mode can merge multiple shots into one, providing images with better contrast and more detail.
Some versions allow you to load .xml configuration files specifically tuned for the Realme C25Y gcam for realme c25y
Don't just stick to the Photo mode. Experiment with Portrait, Night Sight, and even Video modes to discover what works best for you. Google Camera's HDR+ mode can merge multiple shots
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A: No. GCam is just an app. You are not rooting the device or unlocking the bootloader. It is 100% reversible (simply uninstall it). gcam for realme c25y