One common cause might be a screen protector that isn’t applied smoothly or has trapped air underneath. Another possibility could be a problem with the digitizer or the display itself tex9.net Nintendo. To troubleshoot, try removing any screen protectors and reapplying them carefully. If the issue persists, it may require professional inspection to determine if there’s a hardware problem needing repair or replacement. Always ensure your device is handled gently to avoid exacerbating any screen issues.