Four limits hidden behind one word
Speed
High-speed allowance
Full speed may last for a daily quota, followed by slower service.
Sharing
Hotspot cap
Phone data can be unlimited while tethering is limited separately.
Policy
Fair use
Providers may manage unusually heavy use under a fair-use policy.
Time
Validity
Unlimited usage still ends when the purchased number of days expires.
Who should consider unlimited?
Unlimited plans can fit travelers who stream frequently, upload video, depend on mobile data all day or prefer predictable usage. A fixed 5–10 GB package may be better value for maps, messaging and occasional social media.
Our rule: if a provider does not explain throttling and hotspot terms clearly, we do not describe the plan as unrestricted.