2025 Edition | Best Fiber-Optic Internet in Nagasaki: Compare Top Providers for Price and Speed

1. Lower cost for two services: By contracting both your internet connection and smartphone service with the same provider, you may be able to use both services at a lower rate than usual.
2. Simplified billing: You’ll receive a single bill from the same provider that shows both your internet and smartphone charges, making payment easier.
3. One customer support contact: If you have any issues or questions, you can contact the same customer support team for help with both your smartphone and internet service.

1. Check the actual discount amount: While carriers advertise “up to ¥〇〇〇〇 off per month,” this is the maximum discount and the actual amount depends on your specific plan. It’s important for customers to check how much discount applies to their plan.
2. Understand discount conditions: Each carrier sets different conditions, such as “applying for an eligible plan” or “subscribing to fiber-optic phone service.” If you don’t meet these requirements, the discount may not apply.
3. Contract period adjustments: Fiber-optic contracts typically last two years. If you switch your smartphone carrier during this period, it may become difficult to take full advantage of the bundle discount, possibly resulting in higher overall costs.
4. To maximize the benefits of a smartphone bundle discount, it’s important to align the contract periods for both your smartphone and internet service.

1. Cashback for new customers: Some providers offer cashback when you sign up and start using their service within a specified period. This type of cashback is often generous because it’s aimed at attracting new customers.
2. Cashback for existing customers: Some providers also offer cashback to existing customers as a way to promote loyalty and encourage long-term use. However, the conditions and amounts may differ from those for new customers.
3. Limited-time cashback: During special campaign periods, providers may offer higher-than-usual cashback amounts. Checking provider websites regularly is important to take advantage of these limited-time deals and get the best value when signing up.

Cashback promotions are attractive incentives, but there are a few important points to keep in mind:

1. Check the conditions: To qualify for cashback, you must meet certain conditions such as contract duration, deadlines for starting service, and payment status. Be sure to carefully review these requirements and comply with them.
2. Understand how to receive cashback: Cashback may be offered in the form of cash, gift certificates, or points. Check the details of how and when to claim your cashback. In particular, note any claim deadlines—if you miss the specified period, your cashback benefit may become invalid.
3. Consider the long-term contract: Don’t just focus on the short-term benefits of cashback. It’s also important to compare the contract terms, pricing structure, and internet speed to assess the long-term value of the service.

Internet speed is measured in “bps” (bits per second), and a larger value indicates a faster connection. The prefixes K (kilo), M (mega), and G (giga) represent speed increases by factors of 1,000 in that order.

Test results can be affected by factors such as network congestion, distance, and your computer environment.

Below are some websites where you can measure your home internet connection speed—feel free to use them as a reference.

Fiber-optic internet uses fiber-optic cables to transmit and receive data as light signals.
This technology enables fast and stable internet connections.

When comparing fiber-optic internet with other types of internet connections (primarily ADSL and cable):

Fiber-Optic Internet:
Fiber-optic internet uses fiber-optic cables to deliver a high-speed and stable connection.
One of its key features is that it provides nearly equal download and upload speeds thanks to the high-speed transmission of light signals, allowing smooth web browsing, large file downloads, and streaming.

Additionally, it is highly resistant to electromagnetic interference and less affected by weather conditions, ensuring reliable performance—even for real-time applications.

With its high bandwidth, fiber-optic internet supports heavy data usage and high-quality connections across multiple devices, maintaining efficient communication with minimal data loss even over long distances.

Furthermore, since fiber-optic cables do not emit electromagnetic radiation, security is enhanced, reducing the risk of eavesdropping or interception from external sources.

Overall, fiber-optic internet offers fast, stable, high-capacity, and secure connectivity, making it an essential service for today’s digital lifestyles.

Other Connection Types:

ADSL (broadband via telephone lines):
Compared to fiber-optic internet, ADSL is slower, especially with limited upload speeds.
However, it may be sufficient for general web browsing and email use.

Cable Internet:
Cable connections can also deliver high speeds and perform close to fiber-optic internet, but speeds may decrease during peak usage times when many users are online simultaneously.

When signing up for an internet service, there may be several initial costs involved.

Understanding these fees in advance will help you plan your budget properly when entering into a contract.

For single-family homes:

Installation costs (if required):
When installing fiber-optic cables for a single-family home, construction work may be needed. This can include burying cables underground and wiring inside the house.
Installation fees vary depending on the region and the scope of work.
Some providers allow you to pay the installation costs in installments.

Router/modem purchase (if required):
Some providers may require you to purchase a router or modem, which are essential devices for establishing an internet connection.

Other initial costs (contract fees, etc.):
Contract processing fees or activation fees may apply. These vary by provider, so it’s important to check before signing a contract.

For apartments:

Installation costs (if required):
If fiber-optic cables have already been installed in the apartment building, no additional installation work is necessary.
However, if fiber has not yet been installed, wiring work may be required.

Router/modem purchase (if required):
Some providers include routers or modems, but in some cases, you may need to purchase them separately.

Other initial costs (contract fees, etc.):
Contract fees or activation fees may apply. These costs can also vary depending on the apartment building’s management association.

1. Choose a provider:

First, select a fiber-optic internet provider.
Check the provider’s website or contact their customer support to gather information about available plans, pricing, and service coverage areas.

2. Application:

To apply for the selected plan, enter the required information on the provider’s website.
You will typically need to provide personal details such as your name, address, and contact information, along with details of your desired plan.

3. Contract confirmation and installation date notification:

After the provider reviews your information and confirms the contract, they will notify you of the scheduled installation date and activation date.
On the installation day, a fiber-optic modem will be installed, and it will be connected to your home router and devices.
A technician will complete the installation work and verify that the internet connection is functioning properly.

4. Start using the internet:

Once installation and setup are complete, follow the instructions to configure your router and devices, and you can begin using the internet.

These are the general steps for signing up for fiber-optic internet service.

However, the process may vary depending on the provider or region, so we recommend checking the specific details on your chosen provider’s website or by contacting their customer support.

When using an internet connection, you will incur a monthly fee that must be paid.

• Basic plan fee:
  The main portion of the monthly cost is the basic plan fee.T his plan generally provides the minimum speed and capacity needed for typical web browsing and email use. The exact amount varies depending on the provider and plan you choose.
• Optional service fees:
  Some providers offer optional services in addition to the basic plan, such as higher-speed plans or security services. Additional fees may apply if you choose to use these services, so you can select options based on your specific needs.
• Usage-based fees (e.g., data usage):
  Some providers offer plans where the fee varies according to your data usage.T hese plans are suitable for heavy internet users who frequently download large files. Understanding the fee structure and selecting a plan that matches your usage is important.
• Utilizing discounts and promotions:
  Some providers offer discounts or promotional rates for new subscribers, which may allow you to pay a reduced rate for the first few months. However, it’s important to check the regular rates after the discount period and plan your long-term budget accordingly.