How much does an Roamix eSIM for Japan cost?

Roamix Japan plans start at $0.85 for 100 MB over 7 Days. Across all 509 plans, data allowances run from 100 MB to 50 GB, with validity from 1 to 365 days. Roamix has the lowest entry price for Japan of any provider we track.

Which Roamix plan is the best value for Japan?

On cost per gigabyte, the best Roamix plan for Japan is 50 GB for 30 Days at $38.90 — about $0.78 per GB. The cheapest headline price ($0.85) is a smaller bundle, so it costs more per gigabyte. Pick the entry plan for a short trip and the value plan if you expect to stream, map or tether.

Is Roamix the cheapest eSIM for Japan?

Not always. Roamix has the lowest entry price for Japan of any provider we track. Entry price alone can mislead, though — a cheap 1 GB bundle often costs far more per gigabyte than a mid-size plan. Compare the full Japan table before deciding.

Does Roamix support 5G in Japan?

Yes — 450 of 509 Roamix plans for Japan run on 5G where the local network supports it. Actual speeds depend on your device, your location and how busy the host carrier's network is.

How do I install an Roamix eSIM?

QR code delivered instantly after checkout. Buy before you fly while you still have home connectivity, but do not activate until you land — validity usually starts on first connection to a local network, not at purchase. Your phone must be carrier-unlocked and eSIM-capable.

Can I top up an Roamix Japan plan?

Roamix offers Japan plans up to 365 days, so for longer stays it is usually cheaper to buy the longer plan up front than to top up a short one. Top-up availability varies by plan — check the plan detail before you buy if you expect to extend.

Roamix Japan eSIM: Plans & Prices (2026)

All 509 Roamix plans for Japan, priced live — from $0.85. Unlimited day-passes and deep 5G coverage at aggressive prices.

509

Plans available

$0.85

Starts from

$0.78

Best cost / GB

#1 of 6

Entry price rank

The short answer

Roamix has the lowest entry price for Japan of any provider we track.

Best value on cost per gigabyte is 50 GB / 30 Days at $38.90 ($0.78 per GB).

Is Roamix a good choice for Japan?

Roamix's catalogue is unusually deep — tens of thousands of plan permutations — and it leans heavily on unlimited day-passes with a daily high-speed allowance that throttles rather than cutting off. That structure suits travellers who want predictable daily cost and don't want to estimate total data up front. Most Roamix inventory is 5G where the local network supports it, which is not true of every competitor at this price point.

Where it wins

✓Unlimited day-passes with throttle-not-cutoff fair use
✓5G on most routes where the local carrier supports it
✓Very granular duration options, from 1 to 365 days

What to watch

!Daily high-speed cap applies before throttling
!Newer brand with a shorter public track record

Every Roamix plan for Japan

Sorted cheapest first. Prices are pulled live from Roamix and refresh through the day.

Cheapest

Roamix⚡ LIVE

Japan 100MB 7Days

100 MB·7 Days·Hotspot

$0.85

$8.70/GB

~$0.12/day

Instant QR Activation

Provider	Plans	Entry price	Best cost / GB
Roamix (this page)	509	$0.85	$0.78
BreezeSIM	24	$2.08	$0.85
eSIMPal	8	$3.90	$2.80
Airalo	55	$4.00	$0.89
Nomad	23	$4.00	$0.78
Saily	17	$4.99	$1.96

Roamix Japan eSIM: Plans & Prices (2026)

Is Roamix a good choice for Japan?

Where it wins

What to watch

Every Roamix plan for Japan

Roamix vs other providers in Japan

Roamix Japan eSIM: common questions