No, using mobile phones does not cause blindness. There is no scientific evidence to support the claim that using mobile phones can lead to blindness.
Blindness can be caused by a variety of factors such as genetic conditions, infections, injury, or underlying health conditions such as diabetes. The blue light emitted by electronic screens may cause temporary eye strain or fatigue, but it does not cause permanent damage to the eyes or blindness.
However, excessive use of mobile phones or other electronic devices can lead to a range of other issues such as digital eye strain, headaches, and sleep disturbances. To reduce the risk of these issues, it's recommended to take regular breaks when using electronic devices and to maintain good posture and lighting conditions while using them.