# SimSmash eSIM plans for Japan

> 31 active SimSmash plans that cover Japan, from $0.89.
> Updated September 23, 2026. Prices in USD. Web page: https://esimguide.com/japan-esim/simsmash

## Networks in Japan

As stated by SimSmash: au (5G), NTT docomo (5G), SoftBank (5G). The technology is the fastest the provider states, not a measured speed.

## Plans

Where plans share the same data, validity and coverage type, only the cheapest is listed: 22 distinct of 31 plans.

| Plan | Data | Validity | Price | Coverage | Network | Hotspot | Voice | SMS | Phone number | Top-up | ID check | Breakout |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Japan 1GB for 7 Days | 1 GB | 7 days | $1.11 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 1GB for 7 Days | 1 GB | 7 days | $4.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 3GB for 15 Days | 3 GB | 15 days | $8.90 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 3GB for 30 Days | 3 GB | 30 days | $2.59 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 3GB for 30 Days | 3 GB | 30 days | $10.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 5GB for 30 Days | 5 GB | 30 days | $3.89 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 5GB for 30 Days | 5 GB | 30 days | $15.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 10GB for 30 Days | 10 GB | 30 days | $5.99 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 10GB for 30 Days | 10 GB | 30 days | $26.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 20GB for 30 Days | 20 GB | 30 days | $9.99 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Asia 20GB for 30 Days | 20 GB | 30 days | $45.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 50GB for 30 Days | 50 GB | 30 days | $19.99 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Japan 50GB for 180 Days | 50 GB | 180 days | $33.59 | Japan only | 5G | Yes | — | — | — | Yes | No | JP |
| Asia 50GB for 180 Days | 50 GB | 180 days | $94.99 | 19 countries | 5G | Yes | — | — | — | Yes | No | HK |
| Japan Daily Unlimited 500MB/day | 500 MB/day, then throttled | 1 day | $0.89 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Japan Daily Unlimited 1GB/day | 1 GB/day, then throttled | 1 day | $1.41 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Global Daily Unlimited 1GB/day | 1 GB/day, then throttled | 1 day | $5.59 | 116 countries | 5G | Yes | — | — | — | Yes | No | GB |
| Japan Daily Unlimited 2GB/day | 2 GB/day, then throttled | 1 day | $2.59 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Global Daily Unlimited 2GB/day | 2 GB/day, then throttled | 1 day | $9.19 | 116 countries | 5G | Yes | — | — | — | Yes | No | GB |
| Japan Daily Unlimited 3GB/day | 3 GB/day, then throttled | 1 day | $3.19 | Japan only | 5G | Yes | — | — | — | Yes | No | HK |
| Japan Daily Unlimited 5GB/day | 5 GB/day, then throttled | 1 day | $5.39 | Japan only | 5G | Yes | — | — | — | Yes | No | SG |
| Japan Daily Unlimited 10GB/day | 10 GB/day, then throttled | 1 day | $6 | Japan only | 5G | Yes | — | — | — | Yes | No | SG |

Yes / No are what the provider states. Varies means it differs across the plan's coverage. — means the provider does not say, which is not the same as No.
Breakout lists every country the provider declares for the plan; where it names several, which one serves this destination is not stated.

## More

- [All providers for Japan](https://esimguide.com/japan-esim.md)
- [SimSmash plans for Japan, with filters](https://esimguide.com/japan-esim/simsmash)