How to Switch from Y!mobile to Rakuten Mobile (2026 Edition)
3 Reasons to Make the Switch
① You'll save money every month Rakuten Mobile's Rakuten最強プラン gets you unlimited data for 3,278 yen/month (tax included). Compare that to Y!mobile's top-tier "Simple 3 L" plan at 5,258 yen for just 35GB — that's roughly 2,000 yen back in your pocket each month.
② Free domestic calls Any domestic call you make through the Rakuten Link app is completely free. Y!mobile, on the other hand, charges for calling options starting at 880 yen/month.
③ Better Rakuten Ichiba point multipliers Just by being a subscriber, your Rakuten Ichiba shopping points go up by +4x (entry required).
Plan Price Comparison
| Plan Name | Price | Data Allowance |
|---|---|---|
| Simple 3 S | 3,058 yen | 5GB |
| Simple 3 M | 4,158 yen | 30GB |
| Simple 3 L | 5,258 yen | 35GB |
Heads up — Y!mobile is raising prices from July 1, 2026: All Simple 3 S/M/L plans are set to go up by 220 yen.
How to Switch
- Sign up for the employee referral campaign (you need to do this before applying)
- Get your MNP reservation number from Y!mobile (it's valid for 15 days from the issue date)
- Apply to Rakuten Mobile
- Activate using your SIM or eSIM (your Y!mobile contract cancels automatically once this is done)
- Make a call of at least 10 seconds using the Rakuten Link app (this is required to meet the campaign conditions)