MicroEsim 8 cheapest rows

InternationalSIM vs MicroEsim in Japan

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

InternationalSIM

0/8 cheapest rows

Fully verified 12 of 12 facts confirmed Score 74/100 -10%

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

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Cheapest overall

MicroEsim

8/8 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 8 of the 8 price rows for Japan. 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.

	InternationalSIM	MicroEsim
Starting price	$3.36 500MB · 1 days 🌍 Regional Also valid in: Azerbaijan, Bangladesh, Brunei, Cambodia +21 more Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
1 GB or more	$3.36 1GB · 1 days 🌍 Regional Also valid in: Cambodia, China, Hong Kong, India +12 more Get eSIM →	$1.17 1GB · 5 days Get eSIM →
5 GB or more	$16.81 10GB · 7 days Get eSIM →	$3.51 5GB · 7 days Get eSIM →
10 GB or more	$16.81 10GB · 7 days Get eSIM →	$7.25 10GB · 15 days Get eSIM →
20 GB or more	$36.98 25GB · 30 days Get eSIM →	$13.36 20GB · 3 days 🌍 Regional Also valid in: South Korea Get eSIM →
Unlimited	$29.14 Unlimited · 7 days Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
Best price/GB	$1.26	$0.59
Best price/day	$0.19	$0.10

Comparison by eSIMKart

Starting price

InternationalSIM

$3.36

500MB · 1 days

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MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

1 GB or more

InternationalSIM

$3.36

1GB · 1 days

Get eSIM →

MicroEsim

$1.17

1GB · 5 days

Get eSIM →

5 GB or more

InternationalSIM

$16.81

10GB · 7 days

Get eSIM →

MicroEsim

$3.51

5GB · 7 days

Get eSIM →

10 GB or more

InternationalSIM

$16.81

10GB · 7 days

Get eSIM →

MicroEsim

$7.25

10GB · 15 days

Get eSIM →

20 GB or more

InternationalSIM

$36.98

25GB · 30 days

Get eSIM →

MicroEsim

$13.36

20GB · 3 days

Get eSIM →

Unlimited

InternationalSIM

$29.14

Unlimited · 7 days

Get eSIM →

MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

Best price/GB

InternationalSIM

$1.26

MicroEsim

$0.59

Best price/day

InternationalSIM

$0.19

MicroEsim

$0.10

Comparison by eSIMKart

Networks in Japan

InternationalSIM: Not listed
MicroEsim: DOCOMO(IIJ)4G, 5G KDDI3G, 4G, 5G SOFTBANKLTE, 4G

Plan types sold for Japan

InternationalSIMMicroEsim 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

InternationalSIM: Not required

MicroEsim: Not confirmed yet

Refund policy

InternationalSIM: 14-day money-back guarantee: full refund if the eSIM QR code has not been scanned or activated, processed to the original payment method in 3–5 business days.

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

InternationalSIM: Smartstart: plans activate automatically on arrival in a covered destination, with the validity period starting then, not at purchase; unactivated plans expire automatically 6 months after purchase.

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

InternationalSIM: Data services are subject to Fair Use Policies set by the local network carrier per InternationalSIM's terms, but no specific data threshold or throttled speed is disclosed.

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

InternationalSIM: Existing eSIMs and SIM cards can be recharged with more data through the InternationalSIM customer portal without needing a new eSIM.

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

InternationalSIM: Email · Phone · Help center · 24/7

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

Comparison by eSIMKart