Where it's honest
UK handset use on an unlimited tier is genuinely unmetered on Three, O2, Sky and EE — stream, scroll and video-call without watching a dial. Three has priced this tier cheapest among the mast owners, year after year.
Where it bends
| Tethering / hotspot | Some plan generations cap laptop-sharing even on unlimited — THE clause for remote workers |
| Saturated masts | Extreme outliers can be briefly queued at slammed sites; normal heavy use never notices |
| Abroad | Fair-use ceilings everywhere, then per-GB — nothing is unlimited past the border |
Do you even need it?
Open the usage screen— your network app shows the truth.
Read three months— most people consume about half their guess.
Decide— under the biggest normal bucket? Buy the bucket and keep the difference. Genuinely heavy? Unlimited earns its keep.
Heavy month, not heavy life?— a one-off add-on beats repricing the year.