Continuous use of a smartphone can expose the user to radiation emitted by the device, which may be harmful to health.
Smartphones can be a major distraction, leading to decreased productivity and attention span.
Spending excessive amounts of time on a smartphone can lead to social isolation and decreased face-to-face interaction.
Smartphones can be used to bully, harass, or threaten others through social media, text messaging, and other forms of communication.
Smartphone use before bedtime can disrupt sleep patterns and lead to insomnia.
Continuous smartphone use can lead to eye strain, headaches, and other vision problems.
Many people find it difficult to put down their smartphones, and may become addicted to using them.
Smartphones can be vulnerable to cyber attacks, and the personal information stored on them can be stolen or misused.
The production and disposal of smartphones can have a negative impact on the environment, such as pollution and depletion of natural resources.