ByteSIM does not provide a truly unlimited data plan for Jamaica. The items listed as “Unlimited” actually offer only 1 GB of high‑speed data per day; after that limit the speed drops to 10240 kbps. Because of this speed reduction the plans are not unlimited in the sense of offering unrestricted data at full speed.
Instead, ByteSIM offers fixed‑data options that can be more economical for heavy users. For example, a 10 GB plan is available for 14 days at $45.90 USD and a 10 GB plan is also offered for 3 days at $47.90 USD. These fixed data plans give a larger data pool and do not trigger a speed throttle during the validity period.