Yes smartphone addiction can cause mental illness sometimes if person is in depression then also person works a lot on smartphone to relieve stress and anxiety so it means your primary diagnosis is depression.
Next Steps
Visit a psychiatrist
Health Tips
If you are in Lucknow Sitapur or nearby areas u can visit me.
Dr Pranshu Agarwal
MBBS,MD(PSYCHIATRY)
Happy minds psychiatry clinic,
279,ELDECO GREENS,
NEAR FUN REPUBLIC MALL,
GOMTINAGAR,
LUCKNOW (UP)
TIMINGS-MON,WED,FRI-6 TO 9 PM
TUE,THU,SAT-4 TO 9 PM
SUN-10 AM TO 2 PM