Saily Unlimited is not a universal promise of one speed everywhere. The useful answer is the exact allowance and reduced-speed rule shown for the destination and plan you are buying.
Quick answer
Japan Unlimited lists 5 GB per day without a speed limit, then unlimited data at up to 1 Mbps for the rest of the day. That is a current Japan example, not a rule NexKit applies to every Saily destination or plan.
The current Japan page describes 5 GB per day without a speed limit. Read the selected destination page for the figure that applies to your trip.
The same Japan page describes continued data at up to 1 Mbps for the rest of the day. This is reduced-speed continuation, not a promise of full speed all day.
NexKit has not verified one universal Unlimited rule for every destination and plan. Do not copy the Japan figures into another destination page without current evidence.
Official sources checked 29 August 2026: Saily Japan plan page and Saily Family Plan help.
Tick each one against the live Saily offer for your destination. Nothing is saved.
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View current options at SailyIt is not one universal speed promise. On Saily's current Japan destination page, Unlimited is described as 5 GB per day without a speed limit, followed by unlimited data at up to 1 Mbps for the rest of that day. Check the selected destination and plan because this evidence is not a global rule.
Do not assume that. The Japan page explicitly describes a daily high-speed allowance and a reduced speed afterward. NexKit has no retained universal Saily Unlimited policy for every destination and plan.
The Japan page describes the allowance as per day, but NexKit has not verified a universal reset clock for every Saily Unlimited product. Confirm the selected plan's current terms before relying on a reset time.
Saily's Family Plan help page excludes Unlimited data plans from plan sharing. That is a sharing limitation, not a statement about speed or coverage.
Only after checking the destination-specific hotspot and fair-use terms. The Japan page describes hotspot as available, but that does not establish the same policy for every destination or plan.
Every figure on this page was read from the provider’s own terms, help centre or product page on the date shown, and links back to that page. Each fact also states its reach, so a policy read from one product family is never presented as covering everything a provider sells. Where a provider states a policy but publishes no number in the pages we checked, this page says so and lists what we checked. Source links are citations, not paid links. A separately labelled provider CTA may be an affiliate link; commission never changes the evidence, comparison order or recommendation method.
Read the full review methodologyWhere to go from here
Check the selected destination's current Unlimited terms before buying.