Must-see for au/UQ users! Full picture of BIGLOBE Hikari with monthly discount up to 1,100 yen and high cashback [July 2026]

Verification Status: This article is an explanation based on publicly available information (no actual usage or transactions by the editorial team).

Basic Information and Pricing Plans for BIGLOBE Hikari

Image source: join.biglobe.ne.jp (Official Site) — Cited for identification of the review target

The first thing Mr. Makoto checked was, of course, the monthly fee. BIGLOBE Hikari is one of the "FLET'S Hikari Collaboration" services operated by a long-established provider within the KDDI Group. Although it is a Hikari Collaboration service, it uses the NTT East and NTT West FLET'S network as is for line quality, ensuring a stable communication infrastructure nationwide.

The pricing plans are broadly divided into two types: "1 Gbps" and "10 Gbps." The monthly fees when applying the start discount and continuous usage benefits are as follows:

• 1 Gbps Plan: Detached house: 5,478 yen / Apartment building: 4,378 yen
• 10 Gbps Plan: Both detached house and apartment building: 6,270 yen

Additionally, the initial construction fee is effectively "0 yen." This is achieved by paying the construction fee in installments and then deducting the same amount from the monthly fee. Even for those living in rental properties, construction can proceed smoothly as long as the landlord's consent is obtained.

A key point to note regarding communication quality is that it standardly supports IPv6 (IPoE) connections. Compared to the conventional PPPoE method, it is easier to avoid congestion, and the advantage is that speed degradation during nighttime hours can be suppressed. A compatible router is required, but rental options are available, making it an easy environment for beginners to adopt.

After a quick glance at the pricing table, Mr. Makoto looked relieved, saying, "It seems like the monthly cost could be lower than what I'm paying now." However, at this point, his main interest was still "how much can be recovered through the campaign."

Up to 85,000 Yen! A Complete Guide to Biglobe Hikari's Cashback Campaign

Not only can you reduce your monthly communication costs, but you can also receive a lump sum of cash back, which is a major appeal of Biglobe Hikari. According to publicly available information, the cashback amounts are set as follows for each plan.

• 1 Gigabit Plan: 35,000 Yen
• 10 Gigabit Plan: 55,000 Yen

Furthermore, by entering the coupon code "BWS" at the time of application, these amounts can be increased. According to information from certain comparison sites, a maximum cashback of 85,000 Yen can be achieved (conditions apply).

Additionally, for those currently using another provider's optical line, a "Cancellation Fee Support Benefit" is also available. This system covers up to 40,000 Yen in early termination fees or removal construction costs, significantly lowering the financial hurdle when switching providers. For people like Mr. Makoto who hesitated, thinking, "I'm not sure about switching if I have to pay a cancellation fee," this is a point not to be missed.

However, there is one point to note. You need to apply for the cashback yourself from your My Page at the 12-month mark after signing the contract. If you forget to apply and the deadline passes, your hard-earned benefit will expire. Therefore, many reviews on various sites strongly recommend that you "register it in your calendar."

You can check the latest campaign conditions and the validity of the coupon code on the Official Website. Be sure to check this before applying. Since the cashback is a benefit you can reliably receive after signing the contract, and you can start with zero initial costs, it is recommended to first begin with a free area check.

Why au and UQ Mobile Users Should Choose BIGLOBE Hikari

The Tanaka family uses two au smartphones. Until now, they have been receiving a monthly discount through "au Smart Value," but since au Hikari is not available at their new home, the discount will disappear if they stay as is.

This is where the two set discounts offered by BIGLOBE Hikari come into play: "au Smart Value" and "UQ Mobile Home Set Discount." If you subscribe to an eligible mobile plan, you can receive a discount of up to 1,100 yen per line on your monthly mobile charges. With two lines, that means savings of up to 2,200 yen.

• au Smart Value: Discount applies to au mobile phones/smartphones subscribed to eligible rate plans.
• UQ Mobile Home Set Discount: Discount applies to UQ Mobile lines subscribed to eligible rate plans.

Moreover, this discount is applicable nationwide in all FLET'S Hikari service areas. In other words, it does not matter whether au Hikari is available in your area. BIGLOBE Hikari truly shines in "areas where an au user lives in the household but au Hikari is not available."

Calculating for the Tanaka family's case, the effective monthly cost after considering the discount for two smartphones could actually be lower than before. For households struggling with communication costs, having this option to "not give up on the set discount" should be very reassuring. Additionally, since you can check availability in advance through demonstrations or free area checks, you can start considering it without any risk.

What is the Actual Speed of BIGLOBE Hikari? Can It Be Used Comfortably with IPoE Support?

When choosing an internet line, speed stability is a topic as concerning as the price. For Mr. Makoto, who enjoys video streaming and online gaming with his family, the rumor that "it gets slower at night" was a source of anxiety.

Looking at the trends of actual measured values posted on multiple review sites, the average download speed with IPoE connection is reported to be approximately 580.4 Mbps. This is a level that ranks among the top in the optical collaboration line category. The standard adoption of the IPoE method, rather than the congestion-prone PPPoE, contributes to this stability. Because it uses a dedicated connection path that is less prone to congestion, the speed tends not to drop significantly even at night.

Actual user feedback includes comments such as:

"The speed is stable with the IPoE connection." (From multiple review sites)

Of course, speed varies depending on the home environment, connected devices, and time of day. There are also some reviews saying "the speed drops at night," so excessive expectations should be avoided. However, for general web conferencing or high-quality video streaming, it can be said that IPoE support allows for sufficiently comfortable communication. Please note that speed fluctuates depending on the usage environment and time of day, so a constant numerical value is not guaranteed.

After organizing this information, Mr. Makoto cleared up one of his concerns about speed, thinking, "For everyday use, it seems like there's no problem at all."

User Feedback｜The Reality of Biglobe Hikari's Good and Bad Reviews

What specs and pricing alone cannot reveal is the actual user experience. Here, based on aggregated information from 131 user reviews, we delve into the reality of evaluations divided into 52% positive, 33% neutral, and 15% negative feedback.

Highly praised points are, as expected, "the benefits of the au set discount" and "the size of the cashback."

"With the au Smart Value, you get a monthly discount of 1,100 yen, so it's a good deal for au users." (From multiple review sites)

"It's helpful that the installation fee is effectively free." (From multiple review sites)

In this way, the fact that household finances are eased in terms of both monthly running costs and initial expenses is supported by many users.

On the other hand, there were also a certain number of voices calling for improvement. Typical examples are "the hassle of applying for cashback" and "congestion in support."

"Be careful, as the cashback expires if you forget to apply." (From multiple review sites)

"Support gets congested at the beginning and end of the month." (From multiple review sites)

These are not major structural flaws but rather complaints that can be addressed by oneself. You can prevent this by setting an alarm for the 12th month. As for support, if you want to avoid congestion, contacting them in the middle of the month will go smoothly.

Regarding nighttime speed, while there are comments like "speed drops at night," this tends to be significantly alleviated by the aforementioned IPoE connection. There are also minor opinions about the return kit shipping fee (1,430 yen) upon cancellation and the penalty for non-return (6,000 yen per unit), such as "I'm dissatisfied with the return kit shipping fee when canceling," but if you know about it in advance, it's unlikely to be a major setback.

Overall, "there are many points to be aware of that you can handle if you know about them" is the real picture obtained from the review analysis.

Don't Miss Out! Check Termination Fees and Contract Periods in Advance

Behind every "great deal," there are always contract terms. Based on publicly available information, I'll honestly break down whether the restrictions are truly as strict as Makoto was concerned about.

The contract period for BIGLOBE Hikari is 3 years. During this time, if you cancel outside of the renewal month (the period starting from the month following the contract expiration month for several months), a cancellation fee will apply. This system is almost the same for other companies' optical line services and is not particularly strict. However, if you miss the renewal month without knowing, you may incur costs, so calendar management is essential.

When canceling, you must return the equipment provided to you, and a shipping fee of 1,430 yen for the return kit will be incurred. Additionally, if you fail to return it within the deadline, a penalty of 6,000 yen per unit will be charged. Knowing these details before signing the contract should prevent any major surprises.

Furthermore, by using the other company cancellation fee support benefit mentioned earlier, you can cover up to 40,000 yen in cancellation fees or removal costs incurred from your previous provider. If you are moving or changing providers, there may be cases where no construction work is needed, allowing for a smooth transition. Therefore, it is recommended to start by checking your area and current contract status.

With procedures such as "transfer" or "provider change," it may be possible to switch your current FLET'S Hikari line to BIGLOBE Hikari without any new construction work. For those living in rental properties like Makoto, this is a major advantage as it saves the hassle of construction.

Thorough Comparison with Other Fiber Optic Services | Differences Between BIGLOBE Hikari, au Hikari, Docomo Hikari, and SoftBank Hikari

Here, Mr. Tanaka decided to compare major fiber optic services side by side. This was to calmly determine which service best suits his family composition and mobile carrier.

*Monthly fees and cashback amounts vary depending on the period and campaign. Figures are estimates based on publicly available information.

The biggest difference between BIGLOBE Hikari and au Hikari is the coverage area. au Hikari uses KDDI's proprietary optical fiber network, giving it advantages in speed and pricing in some regions, but it is only available in limited areas. In places like Mr. Tanaka's, where "au Hikari is not available," BIGLOBE Hikari serves as a viable alternative that still allows the au bundle discount.

Docomo Hikari is tailored for Docomo smartphone users, and SoftBank Hikari for SoftBank/Y!mobile users, with discounts linked to each respective carrier. Even if au or UQ users subscribe to these lines, they cannot benefit from the bundle discount unless other discount programs are available.

Ultimately, BIGLOBE Hikari becomes the strongest option for those who meet all of the following conditions:

• You or a family member is an au/UQ mobile user
• au Hikari is not available in your current (or future) area of residence
• You want to minimize cancellation fees and initial costs for switching

It can be said that this service truly shines in the exact same situation as Mr. Tanaka's: "an au user who cannot use au Hikari."

Biglobe Hikari: From Application to Activation

After a family meeting, Mr. Makoto decided, "Let's go with this." The final step is concrete action. The process from application to activation is surprisingly simple.

Step 1: Apply from the Official Website First, access the Biglobe Hikari official website and select your desired plan (1 Gbps / 10 Gbps) and options. On the application screen, be sure to enter the coupon code "BWS". This allows you to receive an increased cashback benefit.

Step 2: Schedule the Installation Work After applying, schedule the activation work with NTT. If you already use a FLET'S Hikari line and are "switching" or "changing providers," no installation work is required, and in some cases, the switch can happen in as little as a few days. You will be informed during the area check stage whether your current line can be used.

Step 3: Activation and Router Connection Once the work is complete, connect and configure an IPv6 (IPoE) compatible router. If you have applied to rent a router, simply connect the device that is sent to you. Almost no difficult settings are required.

Step 4: Apply for Cashback in the 12th Month Exactly 12 months after your contract starts, log in to My Page and apply for the cashback. To avoid missing this timing, we recommend setting a reminder on your smartphone calendar or similar.

All procedures are completed online, and there are no difficult documents to submit. Even just checking the service availability in your area beforehand will give you results in just a few minutes. Since you can start with zero initial costs and consider it risk-free through demos or free area checks, feel free to check it out first.

Note: The speeds mentioned in this article may vary depending on the usage environment and time of day. Fees and campaign details may change depending on the period and service area. Please always check the latest conditions on the official website.

Methodology and Disclosure

Verification Method: This article is based on publicly available information confirmed as of 2026-07-18. The editorial team has not actually subscribed to or used the services in question. This explanation is based on publicly available information (official websites, third-party reviews, and user feedback). Service details, fees, and campaigns are subject to change, so please be sure to check the official information before applying.

Operator Information: The editorial policy and evaluation criteria for this article are described in the Editorial Policy, and the verification procedures are described in the Evaluation Method. If there are any errors in the content, please report them to the contact desk.

Affiliate Disclosure: This article contains affiliate links, and our site may receive compensation without any additional cost to the reader. Compensation does not affect the evaluation content.

Frequently Asked Questions

Can I really receive the cashback? How can I avoid forgetting to apply?

Cashback requires you to apply yourself from My Page in the 12th month after the contract. If you forget to apply, it will expire, so it is recommended to take measures such as setting a reminder on your calendar.

There are reviews saying the speed slows down at night; how much is it actually?

The average download speed during IPoE connection is reported to be approximately 580.4 Mbps, and it is relatively stable even at night. However, it can vary depending on the environment and time of day, so excessive expectations should be avoided.

How much does it cost to cancel? What is the procedure for returning equipment?

When canceling, cancellation fees may apply depending on the contract period. Equipment must be returned following the specified procedure and within the return deadline. Please check the official website for details.

When are the peak hours for phone support? Is chat or email available?

The peak hours for phone support are not specified, but inquiries via chat or email are also possible. You can check each contact point on the official website.

What are the conditions for the installation fee to be effectively free? Is there a difference between new and transferred contracts?

The installation fee is effectively free by paying it in installments and deducting the same amount from the monthly fee. The same conditions apply to both new and transferred contracts.

In which areas is the 10 Gigabit plan available? How can I check availability for my address?

The 10 Gigabit plan is limited to certain areas. You can check availability by entering your address on the area check page of the official website.

Does the au/UQ Mobile bundle discount apply to all family members' lines?

The bundle discount applies to each line subscribed to the eligible smartphone plan, and all family members are eligible for the discount. The discount is up to 1,100 yen per line.

How much is the cancellation fee if I cancel outside the renewal month of the 3-year contract?

Cancellation outside the renewal month incurs a cancellation fee. The specific amount varies depending on the contract plan and timing, so please check the official website.

References / Sources

This article references publicly available information as of 2026-07-18.

• 【Official】BIGLOBE Hikari (BIGLOBE Optical Fiber) - High-Speed Internet
• Is BIGLOBE Hikari's Reputation Bad? Thorough Explanation of Reviews, Speed, and Cashback [2026 Latest]
• BIGLOBE Reputation / Satisfaction | Provider Comparison - Kakaku.com
• BIGLOBE Hikari Speed Measurement Results (Actual Values) | Minna no Network Speed (Minsoku)
• 【June 2026】BIGLOBE Hikari Campaign and Cashback Comparison! Which is the Best Deal?
• Why is BIGLOBE Hikari's Communication Speed Slow? Actual Average Speed and How to Speed It Up
• BIGLOBE Hikari Reviews (131 Reviews) | Minna no Line Reviews
• BIGLOBE Hikari Reputation | au Suma Value Compatible, 3-Year Contract, CB Up to 85,000 Yen Verified [June 2026]
• BIGLOBE Hikari Reviews and Feedback [2026 Latest] Price, Actual Speed, Monthly 5,478 Yen, Actual Speed 255Mbps, CB 59,000 Yen Comparison