Where the terms diverge
- Internet addiction (Young, 1998) was the first formalisation. Originally targeted at desktop-era heavy use, gaming, chat rooms, and pornography. Predates smartphones.
- Phone addiction / problematic smartphone use (post-2010) emerged with iPhone-era patterns. Specific to the always-present, always-personal device.
- Internet gaming disorder (DSM-5 candidate, 2013) carved out gaming as a distinct phenotype within internet-addiction research.
- Social media disorder (proposed 2017+) carves out social media specifically, with its own diagnostic criteria.
For most adults today, the device-specific framing matters more than the original network framing. Your phone is your internet; the addictive pattern is mostly mobile-driven.
Behavioural overlap
Both conditions share core features:
- Compulsive use beyond intended duration.
- Tolerance (needing more to feel the same effect).
- Withdrawal symptoms when access is blocked.
- Failed attempts to reduce use.
- Interference with work, sleep, or relationships.
- Continued use despite awareness of harm.
These criteria are imported from substance-use disorder frameworks. The fact that the same criteria fit suggests the underlying mechanism (compulsive reward-seeking with diminishing returns) is similar across substance and behavioural addictions.
Why the distinction matters for intervention
If your pattern is phone-dominant: the highest-leverage interventions are device-specific. Charge phone outside bedroom. Delete worst apps. Use Apple Screen Time or hard commitment device like ScreenFine. Hardware swap (Light Phone, Brick) for severe cases.
If your pattern is desktop-heavy or gaming-driven: phone-only interventions miss the point. You need browser blockers (Cold Turkey, Freedom desktop), gaming-time limits (Steam parental controls, separate user accounts), and possibly hardware separation between work and entertainment computers.
If your pattern is both: tackle the bigger source first. Most adults have a 70/30 split with phone dominant. Fix the phone first, see how much residual desktop pattern remains.
Which fits your pattern
Audit yourself for 7 days. Apple Screen Time covers iPhone; for desktop, use RescueTime or Toggl Track. Compare totals.
- If 70+ percent of problematic time is mobile -> phone-dominant pattern.
- If 50+ percent is desktop or gaming -> broader internet pattern.
- If you spend significant time on a console or PC game -> consider gaming-disorder framing specifically.
For most adults reading this, the answer is phone-dominant. Phone-specific interventions cover most of the problem. See the phone addiction pillar for the structural plan.