Hi
As long as your mobile use is not affecting your social, personal, occupational domains, it is not addiction & you need not worry. just imagine how doctors & many other professionals answer questions to patients especially online, you can't call them mobile addicts, so habit is different from addiction. This is very common & not much serious.
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still if you feel your mobile use is affecting your daily routines like work & sleep & making you & others distressed, you better consult a psychologist.
thank you.