No, the plans listed for Guatemala from Keep On Roaming do not provide unlimited high‑speed data. All “Unlimited” options actually allow only 1 GB of data (or 1 GB per day) for the plan’s duration, after which no additional high‑speed data is available and no reduced speed is specified.
Instead, Keep On Roaming offers several fixed‑data eSIM offerings that may better suit heavier users. For example, a 10 GB plan valid for 30 days costs $23.00 USD, while a 20 GB plan for the same period is $42.00 USD and a 50 GB plan is $85.00 USD; a 100 GB plan is available for $166.00 USD, all of which provide uninterrupted high‑speed connectivity for their entire validity. Choosing a fixed data plan can be more cost‑effective unless a user is a very light data consumer.