MicroEsim 8 cheapest rows

AeroSims vs MicroEsim in Japan

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

AeroSims

0/8 cheapest rows

10 of 12 facts confirmed Score 65/100

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.

	AeroSims	MicroEsim
Starting price	$3.90 3GB · 30 days Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
1 GB or more	$3.90 3GB · 30 days Get eSIM →	$1.17 1GB · 5 days Get eSIM →
5 GB or more	$5.90 5GB · 30 days Get eSIM →	$3.51 5GB · 7 days Get eSIM →
10 GB or more	$9.90 10GB · 30 days Get eSIM →	$6.23 10GB · 15 days Get eSIM →
20 GB or more	$16.90 20GB · 30 days Get eSIM →	$11.98 20GB · 20 days Get eSIM →
Unlimited	$10.90 Unlimited · 3 days Get eSIM →	$0.81 Unlimited · 1 days Get eSIM →
Best price/GB	$0.69	$0.40
Best price/day	$0.13	$0.09

Comparison by eSIMKart

Starting price

AeroSims

$3.90

3GB · 30 days

Get eSIM →

MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

1 GB or more

AeroSims

$3.90

3GB · 30 days

Get eSIM →

MicroEsim

$1.17

1GB · 5 days

Get eSIM →

5 GB or more

AeroSims

$5.90

5GB · 30 days

Get eSIM →

MicroEsim

$3.51

5GB · 7 days

Get eSIM →

10 GB or more

AeroSims

$9.90

10GB · 30 days

Get eSIM →

MicroEsim

$6.23

10GB · 15 days

Get eSIM →

20 GB or more

AeroSims

$16.90

20GB · 30 days

Get eSIM →

MicroEsim

$11.98

20GB · 20 days

Get eSIM →

Unlimited

AeroSims

$10.90

Unlimited · 3 days

Get eSIM →

MicroEsim

$0.81

Unlimited · 1 days

Get eSIM →

Best price/GB

AeroSims

$0.69

MicroEsim

$0.40

Best price/day

AeroSims

$0.13

MicroEsim

$0.09

Comparison by eSIMKart

Networks in Japan

AeroSims: Not listed
MicroEsim: DOCOMO(IIJ)4G, 5G KDDI3G, 4G, 5G NTT Docomo4G, 5G Softbank4G, LTE, 5G

Plan types sold for Japan

AeroSimsMicroEsim 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

AeroSims: Not required

MicroEsim: Not confirmed yet

Refund policy

AeroSims: Full refund within 30 days of purchase if the eSIM hasn't been installed on any device; refund requests are reviewed within 48 hours.

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

AeroSims: Starts the moment the eSIM first connects to a network at your destination, not at purchase — installing early costs nothing.

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

AeroSims: On Unlimited plans, after unusually heavy use in a single day the local carrier's fair-use policy can reduce speed for the rest of that day, resetting to full speed the next.

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

AeroSims: Extra data can't be added to a running data package — buy a second plan for the same destination instead; an Unlimited plan can be extended with extra days from your personal eSIM page.

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

AeroSims: Email · Live chat · Help center · 24/7

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

Comparison by eSIMKart