Japan Cheap SIM Card : Rakuten, Linemo, Mineo & Best MVNOs
Stop overpaying for data in Japan. Here's how to get a cheap SIM card in 2026 — Rakuten, Linemo, Mineo, and more compared.
Apr 8, 2026·✍️ olablog·⏱ 2 min read
Stop overpaying for data in Japan. Here's how to get a cheap SIM card in 2026 — Rakuten, Linemo, Mineo, and more compared.
Japan's big three carriers — Docomo, SoftBank, and au — will happily charge you a small fortune for a local plan. The good news: a thriving ecosystem of budget MVNOs (virtual network operators) means you can get reliable data for as little as $7–$20/month. Here's how to pick the right one and get set up in 2026.
1. Best Budget SIM Cards Compared
| Provider | Starting Price | Data | Why It's Worth It |
|---|---|---|---|
| Rakuten Mobile | $0 (≤1 GB) | Unlimited | Cheapest overall; earn Rakuten points |
| Linemo | ~$7/month | 3 GB | Runs on SoftBank's network; free LINE calls |
| Mineo | ~$2/month | 1 GB | Lowest entry price; runs on all three major networks |
| povo | $0 (base) | Pay-as-you-go | Runs on au; great for flexible short stays |
| IIJmio | ~$6/month | 2 GB | Rock-solid reliability; popular with long-term expats |
2. What You'll Need to Sign Up
- A Residence Card (在留カード / Zairyu Card) showing your registered Japanese address
- A Japanese credit or debit card for monthly billing
- An email address and a phone number (a temporary number works for the initial signup)
- A compatible unlocked handset — most modern iPhones and Android flagships support Japan's frequency bands without issue
3. How to Register with Rakuten Mobile — Step by Step
- Visit network.mobile.rakuten.co.jp or walk into any Rakuten Mobile store
- Select the "Rakuten UN-LIMIT VII" unlimited plan
- Create or log in to your Rakuten ID
- Upload photos of your Residence Card and passport when prompted
- Enter your payment card details
- Wait 3–5 business days for your SIM to arrive by post
- Follow the setup guide included in the box — it's straightforward, even in Japanese
📱 Once your Japanese SIM is active, download the OlaChill app to book highway bus tickets and keep your whole itinerary in one place.
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