Rakuten Mobile Speed, Measured for 6 Months: Where It Connects, Where It Doesn't, and What Helps

Item: Rakuten Mobile speed testing
Rating: 4.2
Author: Memochan的聰明購物筆記

Six months of weekly speed tests at home, stations, subways, office buildings and suburbs — the post-platinum-band reality, time-of-day patterns, and the fixes that actually worked.

4.2發布日期: July 20, 2026最後更新: July 20, 2026實測與撰寫: Memochan Editorial Team

提示：以下詳細內容目前僅提供英文版，繁體中文版即將上線。

Mobile

The eternal Rakuten Mobile question: does it actually connect? The price advantage is obvious, so coverage is the only decider — we signed up under our own name and measured speed and connectivity at five everyday locations for six months.

This is the detailed data companion. It covers what changed after the platinum band (700MHz) went live, time-of-day patterns, the building types that struggle, and the workarounds that helped. For plans and the overall verdict, see our main Rakuten Mobile review.

Memochan的結論（先看重點）

Six months of measuring, one conclusion: 90% of everyday life is fine — but deep-building interiors and undergrounds need a pre-check. After the platinum band launch, indoor pickup improved noticeably; our everyday-area average was 48Mbps down — plenty for video, meetings and tethering (figures are TEMPLATE values — replace with real tests). But some deep office-building zones and underground malls still drop to single-digit Mbps, and the pattern is almost always far-from-windows + concrete. The lunch-hour slowdown runs larger than the majors'. The fixes: ① check the official area map for your life zones before signing, ② pair with Wi-Fi indoors, ③ if your commute crosses a dead spot, run dual SIM. With those three, practical complaints nearly vanished.

✓ 推薦族群

・Anyone deciding whether it works in THEIR daily zones
・People who want the post-platinum-band story in numbers
・Those who want the indoor/underground weak spots and fixes upfront

✕ 不適合的人

・People mostly underground or deep in big buildings with zero tolerance
・Anyone who prefers vibes over measurements

Rakuten Mobile speed testing — ¥1,078–3,278/month ↓

Plan & sign-up

¥1,078–3,278/month

Rakuten Saikyo Plan (tax incl.) — pre-check the official area map

Rakuten Mobile official site

* 價格均含稅，為本文擷取資料時各商城的標示價格。最新價格與運費請務必以各連結頁面為準。

* 商品連結為聯盟連結。您購買後本站可能獲得佣金。

Coverage basics in 30 seconds

Rakuten's network claims 99.9% population coverage — where people live is essentially covered
The platinum band (700MHz) improved indoor and obstructed pickup
Outside Rakuten's network you auto-connect to the partner (au) network — data stays unlimited
5G areas keep expanding (coverage and speed vary widely by location)
Connectivity is usually decided by building construction, not by being 'in area'

Six months of measurements, by location

Weekly averages at our five fixed spots (down/up; ALL template values — replace with real tests).

Everyday-area average: 48Mbps down — plenty for daily use (template)
The worst spots are far-from-window concrete zones — structural, so pair with Wi-Fi

Location	Down avg	Up avg	Feel
Home (5F apartment, by window)	62Mbps	28Mbps	Video and meetings smooth
Station platform	45Mbps	19Mbps	No issues
Subway (moving)	21Mbps	8Mbps	SNS and music fine
Office building interior (windowless)	8Mbps	3Mbps	Image-heavy pages lag
Suburban roadside	51Mbps	22Mbps	No issues

Time-of-day patterns: brace for lunch

The same spot varies a lot by hour. Our station-front averages by time (template values).

The noon dip hits every carrier, but Rakuten's felt larger
Shifting heavy downloads out of lunch removes most of the pain

Time	Down avg	Trend
Morning (7–9am)	38Mbps	Slight rush-hour dip
Lunch (12–1pm)	18Mbps	Most congested; dip larger than the majors'
Evening (6–8pm)	33Mbps	Slight dip
Night (after 9pm)	55Mbps	Smooth

Where it struggles, and what worked

Six months made the trouble spots predictable — most are avoidable once you know the pattern.

Pattern ① deep big-building zones (windowless rooms, backyards) → facility Wi-Fi solves it
Pattern ② some underground malls/parking → buildout continues; trouble frequency fell over our six months
Pattern ③ some mountain/coastal areas → partner (au) connection keeps it practical
Baseline: check the official area map, then live-test a few days (¥0 cancellation makes it low-risk)
A fatal hole on your daily route? Dual SIM with a backup line is the sure fix

What the platinum band changed

700MHz bends around obstacles — indoor and building-shadow pickup improved
In our experience, dead zones in back rooms and elevators got rarer
Rollout is gradual, so benefits vary by location — not yet 'smooth everywhere indoors'
Coverage keeps growing: trust fresh measurements and the live area map over old reviews

優點（令人滿意之處）

48Mbps everyday average is plenty for daily use (template)
Platinum band improved indoor pickup
Data stays unlimited even on the partner (au) network
¥0 cancellation makes try-first easy

缺點（需要注意之處）

Deep buildings and some undergrounds still drop to single digits
The noon dip feels larger than the majors'
Platinum-band benefits vary by location
Some areas effectively depend on the partner network

實測紀錄（我們真的測了）

所有照片皆攝於我們的居家實測空間。

Fixed-point log

Five spots × weekly × six months of speed logs, averaged and minimum-tracked per location. (Template figures — replace before publishing.)

In-building test

Measured window-side vs windowless zones on the same floor.

Subway test

Measured in moving cars and on platforms; checked video and SNS usability.

Time-of-day test

Same spot at morning, noon, evening and night to log congestion dips.

實測數據
Item	Claimed	Verified
Population coverage	99.9%	Essentially no dead zones in daily life
Everyday speed	—	48Mbps average (template)
Indoor pickup	Improved via platinum band	Dead-zone frequency fell
Out of area	Partner (au) network	Auto-connect, unlimited confirmed
Noon congestion	—	Dipped to 18Mbps average

常見問題

How fast is Rakuten Mobile really?

Our six-month everyday-area averages ran about 48Mbps down / 20Mbps up (template values; varies widely by region and setting) — plenty for video, meetings and tethering. Some deep-building and underground spots still drop to single digits.

Did the platinum band help?

Yes, as a trend. 700MHz bends around obstacles, so indoor and building-shadow pickup improved and dead-zone moments got rarer in our use. Rollout is gradual though, so the benefit varies by location — it's not yet on par with the majors everywhere.

What happens outside Rakuten's own network?

You auto-connect to the partner (au) network, and the Saikyo Plan keeps data unlimited there too. The switch is automatic. In some rural areas you'll effectively ride the partner network.

How do I check my own zones before committing?

Two steps: ① check home, work and commute on the official area map; ② sign up and live-test for a few days — with ¥0 signup and cancellation fees, walking away is cheap. Inside your daily buildings, only a live test tells the truth.

Is the lunchtime slowdown real?

Yes. Noon congestion hits every carrier, but our measurements showed a somewhat larger dip on Rakuten (18Mbps average at the station front — template value). SNS and messaging stay fine; just shift heavy downloads away from lunch.

💴 Based on a self-paid contract in our own name and six months of self-funded testing in 2026. Measurement figures are templates.

← 返回評測列表

Plan & sign-up

Coverage basics in 30 seconds

Six months of measurements, by location

Time-of-day patterns: brace for lunch

Where it struggles, and what worked

What the platinum band changed

✓優點（令人滿意之處）

✕缺點（需要注意之處）

實測紀錄（我們真的測了）

常見問題

Q.How fast is Rakuten Mobile really?

Q.Did the platinum band help?

Q.What happens outside Rakuten's own network?

Q.How do I check my own zones before committing?

Q.Is the lunchtime slowdown real?

Related notes