MicroEsim 7 cheapest rows

JamboSim vs MicroEsim in Japan

Side-by-side pricing for Japan, straight from each provider's current real plans.

JamboSim

1/8 cheapest rows

Fully verified 12 of 12 facts confirmed Score 81/100 -10%

Best for: Unlimited data · Multi-country trips · No ID check · Short trips

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Cheapest overall

MicroEsim

7/8 cheapest rows

10 of 12 facts confirmed Score 74/100 -5%

Best for: Unlimited data · Multi-country trips · Short trips · Long stays

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MicroEsim is the cheapest option in 7 of the 8 price rows for Japan. The remaining rows go to JamboSim. Live plans from each provider's catalog, re-checked daily.

Prices in Japan

Cheapest live plan from each provider per trip size. Every price links to that exact plan.

	JamboSim	MicroEsim
Starting price	$1.99 300MB · 3 days 🌐 Global Also valid in: Afghanistan, Albania, Algeria, Andorra +187 more Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
1 GB or more	$2.99 1GB · 7 days 🌍 Regional Also valid in: Bangladesh, Cambodia, China, Hong Kong +13 more Get eSIM →	$1.17 1GB · 5 days Get eSIM →
5 GB or more	$4.99 5GB · 30 days 🌍 Regional Also valid in: Bangladesh, Cambodia, China, Hong Kong +13 more Get eSIM →	$3.51 5GB · 7 days Get eSIM →
10 GB or more	$7.99 10GB · 30 days 🌍 Regional Also valid in: Bangladesh, Cambodia, China, Hong Kong +13 more Get eSIM →	$6.23 10GB · 15 days Get eSIM →
20 GB or more	$10.99 20GB · 30 days 🌍 Regional Also valid in: Bangladesh, Cambodia, China, Hong Kong +13 more Get eSIM →	$11.98 20GB · 20 days Get eSIM →
Unlimited	$6.99 Unlimited · 3 days 🌍 Regional Also valid in: Bangladesh, Cambodia, China, Hong Kong +13 more Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
Best price/GB	$0.55	$0.40
Best price/day	$0.10	$0.09

Comparison by eSIMKart

Starting price

JamboSim

$1.99

300MB · 3 days

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MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

1 GB or more

JamboSim

$2.99

1GB · 7 days

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MicroEsim

$1.17

1GB · 5 days

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5 GB or more

JamboSim

$4.99

5GB · 30 days

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MicroEsim

$3.51

5GB · 7 days

Get eSIM →

10 GB or more

JamboSim

$7.99

10GB · 30 days

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MicroEsim

$6.23

10GB · 15 days

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20 GB or more

JamboSim

$10.99

20GB · 30 days

Get eSIM →

MicroEsim

$11.98

20GB · 20 days

Get eSIM →

Unlimited

JamboSim

$6.99

Unlimited · 3 days

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MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

Best price/GB

JamboSim

$0.55

MicroEsim

$0.40

Best price/day

JamboSim

$0.10

MicroEsim

$0.09

Comparison by eSIMKart

Networks in Japan

JamboSim: KDDI5G Rakuten5G Softbank5G
MicroEsim: DOCOMO(IIJ)4G, 5G KDDI3G, 4G, 5G NTT Docomo4G, 5G Softbank4G, LTE, 5G

Plan types sold for Japan

JamboSimMicroEsim Unlimited data ✓ ✓ Regional bundles ✓ ✓ Global bundles (50+ countries) ✓ ✓ Pay as you go — —

Policies compared

Confirmed from each provider's own site — see the trust card on each provider page for the verification date.

ID verification

JamboSim: Not required

MicroEsim: Not confirmed yet

Refund policy

JamboSim: 30-day window from purchase. Full refund for a confirmed technical/supply fault, duplicate charge, or a charge with no eSIM delivered. No refund once the eSIM is installed/activated regardless of usage, for coverage/speed disappointment, cancelled trips, or an unused-but-expired eSIM. Refunds via Stripe to the original payment method, 5-10 business days; 2-day response, 7 days to complete once approved.

MicroEsim: Conditional refund: full/partial if your device is eSIM-incompatible, the eSIM never connects (full minus a small admin fee), or it works only intermittently (partial, prorated). No refund once the plan has expired unused, once installed on a device (no transfers), for a wrong checkout email, or a simple change of mind. Approved refunds go back to the original payment method, up to 30 business days.

Validity starts

JamboSim: Plan validity starts on activation, not purchase; the exact window is shown per plan (e.g. 3, 7, 15, 30 days from first connection).

MicroEsim: Validity starts when you activate data roaming on the eSIM (connect to the network), not when you first install/add it to the device.

Fair-use limit

JamboSim: Unlimited plans: 3GB of high-speed data per day, then about 1 Mbps until the daily reset at midnight local time. Regular data bundles have no daily fair-use limit.

MicroEsim: Unlimited plans: 'true unlimited' plans may be throttled for the rest of the day once usage typically exceeds 10GB in a single day (resets daily); plans with a high-speed cap drop to 128kbps once that allowance is used.

Top-ups & rollover

JamboSim: Top up an existing eSIM from your JamboSim account anytime - the extra data is added to the same profile, no reinstall needed.

MicroEsim: No — an existing eSIM's data allowance can't be renewed or topped up; buy a new eSIM for more data (per their FAQ).

Support

JamboSim: Live chat · Email · 24/7

MicroEsim: Email · WhatsApp · Live chat · 24/7

Comparison by eSIMKart