If the phone has fallen to the ground, it can lead to deformation of the shell and cause damage to the screen, which will result in black spots or other display issues. Such impacts can also affect the internal components, potentially leading to further malfunctions.
To mitigate these risks and protect your device, it is highly recommended to use a protective case consistently during regular use. If you experience any deformation or display issues following a fall, please visit the after-sales service center for a professional repair and assessment. Prompt action can help restore your phone's functionality and prevent further damage.