Good morning, it’s まさきん.
I came across a purchase plan that brings the iPhone 17 (256GB) down to ¥999 a month on Rakuten Mobile’s official account. I’d just looked into the iPhone 17e’s ¥1 campaign not long before, so I decided to check out the conditions on this one too.
What the Announcement Says
The plan covers the iPhone 17 (256GB). The conditions are switching from another carrier while keeping your phone number, and paying with a Rakuten Card in 48 installments. Meet those, and the monthly payment comes to ¥999 for the 1st through 24th installments.
MNP — that is, switching carriers while keeping your number — is a prerequisite. The eligible plans were the Rakuten Saikyo Plan or Rakuten Saikyo U-NEXT.
The application period started on September 8, 2025. As of this writing, no end date had been announced.
How the Kaikae Choutoku Program Works
The ¥999 price tag also involves the “Kaikae Choutoku Program.”
From the 25th month onward, the condition is trading in for an eligible new device. Meet that, and the remaining device cost is waived. Apparently, a ¥3,300 processing fee applies when you make the switch.
At the regular price, it’s ¥3,329 a month and up over 48 installments. Add in the plan fee, and it comes to ¥4,297 a month and up. Compared to that, ¥999 looks like a pretty significant discount.
By the way, separately from this device purchase program, there’s another perk: if you sign up for a new line through my referral, you’ll get up to 14,000 points.
Clicking this opens the Rakuten login page. Once you log in, you’ll see the campaign details.
What Was a Little Confusing
The ¥999 rate only lasts through the 1st to 24th installments. From the 25th installment onward, it apparently switches to ¥5,659/month and up.
If you don’t trade in your phone under the Kaikae Choutoku Program, that ¥5,659/month-and-up rate just keeps going as-is. Whether or not you trade it in seems to make a real difference to what you pay in the second half.
The iPhone 17e’s ¥1 campaign I looked into before was based on not using the Kaikae Choutoku Program. Since the device and price range are different, I felt the breakdown is really a separate matter.
I also touched on the remaining balance if you want to switch devices partway through, in an article I put together before.
Things to Check Before You Apply
First, it’s worth confirming whether you’re applying via MNP — switching from another carrier. It’s also worth deciding before signing up whether you’ll trade in your device in the 25th month or not. Keeping in mind how that differs from just continuing to use the phone as-is seems like a good idea too. And don’t forget to factor in the ¥3,300 processing fee.
Before signing up, I’d also recommend checking your total monthly cost with the fee simulator.
Wrap-Up
The iPhone 17 (256GB) is eligible when you combine an MNP switch from another carrier with the Kaikae Choutoku Program. That brings it to ¥999 a month for the 1st through 24th installments. What happens from the 25th installment onward depends on whether you trade in the device.
Conditions and pricing are subject to change. If you’re considering applying, please be sure to check the official website.
If you’re due for a device upgrade anyway, why not consider switching to Rakuten Mobile at the same time and getting a good deal on both? If you switch through my referral, you’ll get up to 14,000 points.
Clicking this opens the Rakuten login page. Once you log in, you’ll see the campaign details.
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