Rakuten Mobile’s au Roaming Coverage Slashed Starting October — 5ch Reacts: ‘Are You Kidding Me?’

From our other sites

The story

KDDI has released its roaming coverage map for Rakuten Mobile covering October onward. Replacing the coverage that was in place through the end of September, the roaming area will now be scaled back in stages, premised on Rakuten building out its own base stations. Roaming has already ended in Tokyo’s 23 wards, Nagoya, and Osaka, and the newly released map reveals major cutbacks now hitting Yokohama, Hiroshima, Fukuoka, and other cities. Thread posters reported one after another that their homes or workplaces had dropped out of the coverage area, and opinion split over whether the blame lies with Rakuten’s slow base-station rollout or with KDDI’s handling of the situation.

KDDI has published its roaming area map for Rakuten Mobile for October onward. Roaming under the previous framework ends as of the end of September.

From October, roaming will end in areas where Rakuten already provides its own coverage. For other areas, on the “basic premise” (quoted verbatim from KDDI’s announcement) that Rakuten will build out its own base stations, KDDI will keep helping maintain infrastructure in some regions for a set period. The roaming coverage area will be scaled back in stages.

Roaming has already ended in Tokyo’s 23 wards, Nagoya, and Osaka. The newly published map lets users toggle between the pre-end-of-September and post-October situations, making it clear that roaming coverage will shrink dramatically in places like Yokohama, Hiroshima, and Fukuoka.

Source: k-tai.watch.impress.co.jp / Original article here

What people said

4AnonymousOct 1, 2026 00:38
This map feels kind of malicious, honestly.
They should publish it side-by-side with Rakuten's own coverage map.
6AnonymousOct 1, 2026 02:04
Re: #4
KDDI has no need to do that and probably couldn't anyway.
Rakuten should just publish it themselves — the real issue is that Rakuten's own coverage map doesn't distinguish between areas covered by its own base stations and areas propped up by au.
7AnonymousOct 1, 2026 02:10
Re: #4
Huh? That's Rakuten's job to do.
8AnonymousOct 1, 2026 02:27
Re: #4
It's Rakuten that's failing to fulfill its duty as a carrier here.
Guess dim-witted people like this just don't get that.
5AnonymousOct 1, 2026 00:48
"As stated verbatim" lol (*´Д`) (mocking the editorial note that KDDI's exact wording was quoted as-is)
9AnonymousOct 1, 2026 02:30
I tried switching the view to my usual stomping grounds and nothing changed.
I wish they'd just publish a map that only highlights where roaming is ending.
11AnonymousOct 1, 2026 03:17
Seriously?
People in Chiba are suffering through torrential rain right now.
Do they really have to do this at a time like this?
12AnonymousOct 1, 2026 03:59
My place dropped out of the roaming area too.
That probably means indoor reception is going to get worse — houses squeezed between apartment buildings, or inside reinforced-concrete buildings, could get rough.
Rakuten Mobile users might already be finding it harder to connect since this morning.
If something feels off…
13AnonymousOct 1, 2026 04:03
Starting in October I'm completely outside the coverage area.
Are you kidding me?!
15AnonymousOct 1, 2026 06:16
For now, my area survived at least.
16AnonymousOct 1, 2026 06:58
Even now, major Tokyo stations where roaming's already been cut have garbage-weak signal.
So is it going to become useless inside amusement facilities packed with people from all over too…?
17AnonymousOct 1, 2026 07:07
My coverage here in Hyogo Prefecture is getting thin.
18AnonymousOct 1, 2026 07:14
Well, a bit of pain might be the push people need to quit. I think Rakuten's price is going to drop down to around ¥350 or so.
19AnonymousOct 1, 2026 07:17
The way they're presenting this map is weird.

Why didn't they make it so you can actually compare old versus new?
20AnonymousOct 1, 2026 07:22
There was that image claiming Rakuten Mobile covers 98% of Kanto, but around the Fukiage area it's shaky — gets congested around lunchtime and just isn't great.
Then again, right next to an antenna, you apparently get full bars and it's rock solid…
22AnonymousOct 1, 2026 07:49
Surprisingly, outside of Hiroshima it didn't shrink all that much.
24AnonymousOct 1, 2026 09:31
Back when it was free, I used to leave downloads running over roaming all night for no reason at all.
Probably racked up a total of 100GB.
Wonder how much that roaming cost them.
25AnonymousOct 1, 2026 09:35
Apparently it's not happening all at once — they're switching it over in stages.
26AnonymousOct 1, 2026 09:45
The people who kept saying 'Rakuten works fine enough' must be screaming bloody murder right now.
Since au set up a paid roaming option, there's no choice but to add it on and use that.
But if you're going that far, you might as well just switch to au outright.
28AnonymousOct 1, 2026 10:51
Still better than some garbage company that doesn't invest properly in its infrastructure at all.
30AnonymousOct 1, 2026 11:35
Both my home and my workplace vanished from the coverage area.
31AnonymousOct 1, 2026 12:00
Can you actually tell right now whether you're on roaming or on Rakuten's own network?
If it shows "Rakuten" next to the signal icon, does that mean it's Rakuten's own line?
38AnonymousOct 1, 2026 13:13
Re: #31
You can't tell unless you install an app that shows which frequency band you're connected to.
If it's the 1.7GHz band (Band 3), that's Rakuten's own network.
33AnonymousOct 1, 2026 12:27
They already hit their subscriber target, so they should easily be able to afford building more base stations.
34AnonymousOct 1, 2026 12:41
Around my place, it was like 4G ran on Rakuten's own network and 5G was au roaming.
35AnonymousOct 1, 2026 12:52
If you're not seriously committed to this, just hand the spectrum back.
If you're going to do it, build base stations like your life depends on it.
36AnonymousOct 1, 2026 12:54
Re: #4
That's embarrassing.
37AnonymousOct 1, 2026 13:07
Mikitani (mockingly nicknamed "Mikidani" by posters): "We're going with Starlink — we have no intention of relying on au forever."

Elon Musk: "Here's what Starlink's gonna cost you."

Mikitani: "We have no intention of relying on Starlink — we're building our own base stations." <- we are here lol
39AnonymousOct 1, 2026 13:14
How's it going for people using Rakuten Mobile?
Has anything changed since today?
40AnonymousOct 1, 2026 13:15
If it doesn't connect, you can just walk away — simple as that.
I keep using it because I'm drawn in by the free calls.
Since I started with Rakuten up through today, I bought my device outright, pay the ¥1,400/month service fee with Rakuten Points, and haven't paid a single yen beyond that (lol)
41AnonymousOct 1, 2026 13:17
Even leaving tethering on nonstop only costs ¥2,980, so I was using several terabytes a month lol
42AnonymousOct 1, 2026 13:18
By the way, nothing's changed for Rakuten Mobile as of today — in Tokyo, both at home and at work.

Background and Key Points of This Discussion

Rakuten Mobile has been filling its coverage gaps through “roaming” — borrowing au’s network — on a temporary basis until its own base-station rollout is complete. This roaming arrangement was always planned to shrink in stages, ending first in city centers, and the map released this time is the latest version of that rollback. Opinion in the thread split between those who blame Rakuten’s slow infrastructure buildout for the shrinking coverage and those who sympathize with KDDI’s position, having lent its infrastructure for free all this time. Two points are easy to get wrong here: this announcement isn’t a nationwide, all-at-once service cutoff but a region-by-region phased reduction, and subscribers can’t easily tell whether they’re on roaming or on Rakuten’s own network without checking the frequency band themselves.

*This article is excerpted and summarized from the 5ch (Business News+) thread “[Telecom] Rakuten Mobile’s au Roaming — October Coverage Map Released.”

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *