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Disclosure: We’re The SIM Shop, an Australian travel eSIM retailer. We compete with the providers discussed here.
Start with the data you’ll use
For a Japan fortnight spent mostly in maps, bookings and app conversations, a planned 8GB gives us a useful fixed-data budget. Our 10GB/30-day offer at A$19.95 covers those 14 days with 2GB spare. Simify sells fixed and unlimited options too, so compare the selected offer rather than expecting a single flat-price rule across its range.
A much larger budget changes the shortlist: the lower fixed-data price doesn’t make that allowance suitable, so compare the relevant unlimited offers for the job instead.
The 15-day unlimited comparison
The Japan page captured from Simify lists fifteen days of unlimited data at A$75 and advertises hotspot sharing. Our local KDDI fifteen-day plan is A$64.95, with 14GB to share across the trip. Heavy use on the phone is reviewed over rolling three-day periods and may slow to around 1Mbps, without a published GB trigger. The A$10.05 difference is therefore a price comparison, rather than proof that the two services work identically.
For that local KDDI purchase, the offer counts Japan calendar days from first KDDI data use, ends at 11:59pm Japan time on the final day and has an issued start-by deadline. Its separate hotspot allowance can slow to around 128kbps after use.
For a planned 10GB of laptop sharing over those days, the 14GB pool fits the amount. For 20GB, it doesn’t. Establish Simify’s exact selected sharing and high-speed conditions before choosing it for the larger workload; the hotspot icon doesn’t supply the whole answer.
Simify has an app-based top-up route
Its Japan page advertises keeping the eSIM installed and topping up through the app within its stated 180-day last-use window. That can be convenient for repeat travel. It doesn’t mean our local KDDI order supports the same feature: that family doesn’t offer top-ups, extensions or device transfer.
Refunds: use the eSIM-specific explanation
Simify’s generic policy describes 30-day unused-item returns. Its eSIM help page describes up to 180 days for eligible direct, unactivated change-of-plans cases, plus separate compatibility and technical-problem conditions. If the two pages conflict for an order, ask which terms apply and keep the answer.
Our refund and credit terms are public too. Compare the same scenario and actual payable amount rather than turning a guarantee badge, a future credit balance or one old price table into a complete purchasing decision.
