Kolet Referral Code: ARZ9CAWB

Planning an overseas trip and looking for a convenient way to use mobile data without changing your physical SIM card? The Kolet promo code ARZ9CAWB gives eligible new customers 300 Koins worth £3 to use with Kolet.

Kolet provides travel eSIM data plans for more than 190 destinations. Its digital SIM lets you access mobile data overseas while keeping your usual UK SIM in your phone. There is no need to find a local SIM shop, handle a tiny plastic SIM card or commit to a lengthy mobile contract.

This guide explains how to use the Kolet referral code, how Kolet eSIMs work, which plans are available, what Kolet Koins can be used for and what you should check before travelling.

Kolet referral code: ARZ9CAWB

New-customer offer: 300 Koins worth £3

Enter the code in the Kolet app when purchasing your first eligible eSIM data plan.

Kolet Referral Offer at a Glance

Offer detail	Information
Provider	Kolet
Product	Prepaid travel eSIM data plans
Kolet referral code	ARZ9CAWB
New-customer reward	300 Koins worth £3
How to claim	Enter the code at checkout in the Kolet app
Eligibility	Generally available to eligible new Kolet customers
Coverage	More than 190 destinations
Contract required	No – plans are prepaid
Physical SIM replacement required	No
Where to find Kolet	Kolet official website and the Kolet mobile app

Offer availability and eligibility can change. Check that the 300-Koin reward is displayed in the Kolet app before completing your purchase.

What Is the Kolet Referral Code?

The Kolet referral code is ARZ9CAWB.

Eligible new customers can enter this code when ordering their first qualifying Kolet data plan. The offer provides 300 Koins worth £3, which can reduce the cost of using Kolet.

To make the code easier to copy, it is shown separately below:

ARZ9CAWB

Enter the code exactly as displayed, without adding spaces before or after it.

Kolet’s referral programme is designed to reward both the new customer and the person sharing the invitation. If you use a referral code, the person who shared it may also receive Kolet credit after the qualifying conditions have been completed.

How to Use the Kolet Referral Code ARZ9CAWB

The simplest way to redeem a Kolet referral code is through the Kolet mobile app.

Follow these steps:

1. Visit the official Kolet website and download the Kolet app for your device.
2. Open the app and create a new Kolet account.
3. Confirm that your phone supports eSIM technology and is not locked to a mobile network.
4. Go to the Destinations section.
5. Search for the country or region you plan to visit.
6. Choose a suitable data plan.
7. Continue to the checkout.
8. Select “+ Add a promo code”.
9. Enter the Kolet referral code ARZ9CAWB.
10. Check that the 300-Koin or £3 promotional benefit has been applied.
11. Complete the qualifying purchase.
12. Follow the instructions in the app to install your Kolet eSIM.

Kolet’s official instructions confirm that promotional codes can be added after selecting a destination and data allowance. Only one promotional code can normally be used at a time, although Kolet says existing Koins may also be used alongside a promotional code.

Important: Apply ARZ9CAWB before completing payment. A promotional code generally cannot be added retrospectively after an order has been confirmed.

Who Can Use the Kolet Referral Code?

The Kolet referral offer is intended for eligible new customers.

According to Kolet’s referral guidance, a referral code may not work if the customer:

• Has previously purchased a Kolet data plan.
• Has already claimed Kolet’s separate free 1GB welcome gift.
• Attempts to use their own referral code.
• Has already redeemed the same promotional code.
• Enters another promotion that cannot be combined with the referral offer.
• Does not complete an eligible purchase.
• Enters the code incorrectly.

Kolet also reserves the right to withhold referral benefits where it identifies fraudulent, duplicate or abusive activity.

If you are a genuine new customer and have not previously used a Kolet welcome offer, enter ARZ9CAWB at checkout and confirm that the reward appears before paying.

What Are Kolet Koins?

Kolet Koins are credits used within the Kolet app. They are not cryptocurrency, airline miles or cash that can be withdrawn to a bank account.

Koins can be used to:

• Reduce the cost of an eligible Kolet data plan.
• Pay for an entire plan if the balance is sufficient.
• Part-pay for a plan, with the remaining amount paid using another available payment method.
• Make eligible international calls through the Kolet app.
• Save towards mobile data for a future trip.

The Kolet referral code ARZ9CAWB provides 300 Koins worth £3 under the stated offer.

When Koins are enabled at checkout, the available credit is deducted from the price. If the balance does not cover the entire order, you can pay the remaining amount using an accepted payment method.

You can view your balance and Koin transaction history by opening the Kolet app and going to:

Profile → Credits

Kolet’s general Koin guidance says credits may remain valid for three years from the date they are added. Promotional terms can vary, so check the expiry information shown in your account. Koins cannot normally be transferred to another account or exchanged for cash.

How to Spend Your 300 Koins

Once the referral benefit is available in your Kolet account:

1. Open the Kolet app.
2. Go to Destinations.
3. Choose the country or region you are visiting.
4. Select your preferred data allowance.
5. Tap Continue.
6. Make sure the Use my credits option is switched on.
7. Complete the purchase.

Koins are generally selected automatically at checkout, although you can switch off the credit option if you would prefer to save them for a later trip.

The 300 Koins may cover all or part of a smaller plan, depending on the destination, data allowance, current prices and any minimum payment requirements.

What Is a Kolet eSIM?

An eSIM is a digital version of a traditional SIM card. It is built into compatible smartphones and can be activated electronically, without inserting or removing a physical SIM.

With Kolet, you purchase a prepaid mobile data plan for your destination and install the eSIM through the app. When you arrive, you select Kolet as your mobile-data connection.

Your normal SIM can remain in your phone for your usual number, calls and text messages. Kolet handles your mobile-data connection while you are abroad.

This means you can potentially:

• Use Google Maps or Apple Maps.
• Check flight and hotel information.
• Order taxis.
• Use translation apps.
• Send messages through WhatsApp or Messenger.
• Make internet-based calls.
• Access email.
• Browse websites.
• Use social media.
• Connect a laptop or tablet through your phone’s hotspot.

The Kolet eSIM itself is principally a data service. It does not provide a conventional UK mobile number for ordinary calls and texts. Calls can instead be made through data-based services such as WhatsApp, FaceTime, Messenger or Viber. Kolet also offers an in-app international calling feature that uses Koins where available.

One Kolet eSIM for Multiple Trips

A particularly useful Kolet feature is its universal eSIM.

With some travel eSIM providers, customers install a separate eSIM every time they visit a new destination. Kolet is designed so that its eSIM can stay on your phone. You can switch it off when you are not travelling and purchase another compatible plan when your next trip begins.

That makes Kolet useful for:

• Regular holidaymakers.
• Business travellers.
• Digital nomads.
• Families taking overseas trips.
• People travelling through several countries.
• Anyone who wants a reusable travel-data setup.

You should not delete the Kolet eSIM after your first holiday unless instructed to do so. Keeping it installed can make future trips and top-ups more convenient.

Where Does Kolet Work?

Kolet advertises coverage in more than 190 destinations. Available plans can include individual countries, multi-country regions and broader global coverage.

You can check coverage by searching for your destination in the Kolet app or on its website.

Depending on availability, plan categories may include:

Country-Specific Plans

These cover one destination and may suit travellers spending their entire trip in one country.

Examples could include data plans for:

• The United States.
• France.
• Spain.
• Turkey.
• Japan.
• Australia.
• Thailand.
• Canada.
• Mexico.
• The United Arab Emirates.

Availability and prices should always be checked in the app.

Regional Plans

A regional plan covers several participating destinations within one part of the world. This can be more convenient than purchasing a different plan every time you cross a border.

Regional plans may be useful for:

• A European city break covering several countries.
• A tour of Southeast Asia.
• A North American trip.
• A multi-country journey through Latin America.
• A cruise with stops in different destinations.

Always review the included-country list. A country that appears geographically close to the region may not necessarily be included.

Global Plans

Kolet also offers broader plans designed for travel across numerous destinations. Its help centre says global options may cover 137 countries, while country-specific availability extends to more than 190 destinations.

A global plan could suit someone taking a long trip involving several regions, but it is still important to compare its price and included destinations with the available regional plans.

Kolet Standard and Unlimited Plans

The plans available will depend on the destination.

Standard Data Plans

Standard plans provide a fixed quantity of data, such as:

• 1GB.
• 3GB.
• 5GB.
• 10GB.
• 20GB.

A fixed plan gives you a defined allowance to use during its validity period. It can be a good choice when you want predictable costs and have a reasonable idea of how much data you will need.

Unlimited Plans

Kolet also offers unlimited plans in selected destinations. These work differently from an unrestricted home-broadband connection.

Kolet’s current guidance says an unlimited plan includes 5GB of high-speed data during each 24-hour period. After that allowance has been used, the connection remains active but is reduced to 1Mbps until the next daily reset.

Unlimited plans are therefore suitable for everyday travel use, but may not be ideal for constant high-definition streaming or very large downloads. Hotspot use is permitted, although the reduced speed will also affect connected devices after the daily allowance is reached.

How Much Kolet Data Do You Need?

The right allowance depends on the length of your trip and how you use your phone.

Travel usage	Suggested starting point
Maps, messages and occasional email	1GB–3GB
Regular browsing and social media	3GB–5GB
Frequent social media, music and video calls	5GB–10GB
Longer trips or heavier daily use	10GB–20GB
Very heavy use in an eligible destination	Consider an unlimited plan

These are general guidelines rather than guarantees. Video streaming, cloud backups, automatic app updates and hotspot use can consume data quickly.

Before travelling, consider:

• Downloading offline maps.
• Downloading films and music over Wi-Fi.
• Disabling automatic app updates.
• Pausing cloud photo backups.
• Turning off background data for unnecessary apps.
• Selecting lower video-streaming quality.
• Monitoring your allowance in the Kolet app.

Kolet also provides a data simulator to help travellers estimate their likely usage.

When Does a Kolet Data Plan Start?

Installing the eSIM does not necessarily start the data-plan validity period.

Kolet says a standard plan begins when it is activated at the destination and the first mobile data is used. That allows you to install the eSIM before leaving the UK without wasting part of the plan’s validity.

Kolet recommends installing the eSIM before travelling because the installation requires an internet connection. Home Wi-Fi is usually more dependable than airport or hotel Wi-Fi.

A sensible routine is:

1. Purchase the plan before travelling.
2. Apply the Kolet referral code ARZ9CAWB before payment.
3. Install the eSIM while connected to reliable Wi-Fi.
4. Leave the eSIM switched off until required.
5. Activate it after reaching your destination.
6. Select Kolet as the line used for mobile data.
7. Switch off roaming and automatic data switching for your primary UK SIM.

Will Your Normal UK SIM Still Work?

On a compatible dual-SIM phone, your normal SIM can remain active alongside the Kolet eSIM.

A common setup is:

• UK SIM: your usual telephone number, calls and text messages.
• Kolet eSIM: mobile data while abroad.

Keeping your primary SIM enabled can allow you to receive authentication texts or important calls. However, your UK network may charge for receiving calls, sending messages or using roaming services.

To reduce the risk of unexpected charges:

• Turn off data roaming for your UK SIM.
• Select Kolet as the mobile-data line.
• Disable automatic mobile-data switching.
• Check your UK provider’s roaming charges.
• Avoid answering chargeable calls unless necessary.
• Use internet-based calling where appropriate.

Kolet confirms that a compatible dual-SIM phone can keep the primary line active while using Kolet for data.

Is Your Phone Compatible With Kolet?

Before purchasing a plan, check that your phone:

• Supports eSIM technology.
• Is carrier-unlocked.
• Runs a supported operating-system version.
• Can use an eSIM in the country where the device was purchased.
• Has space for an additional eSIM profile.

Many recent iPhone, Samsung Galaxy and Google Pixel devices support eSIMs, but compatibility varies by model, region and mobile network.

An identical phone model can sometimes have different eSIM capabilities depending on the country where it was sold. Kolet therefore recommends checking its current compatibility list rather than assuming that every version of a particular handset will work.

You should also confirm that the device is unlocked. An eSIM-compatible phone that is locked to another mobile provider may reject the Kolet installation.

Installing and Activating the Kolet eSIM

The app provides instructions tailored to your phone, but the general process is straightforward.

Before Leaving the UK

1. Connect your phone to stable Wi-Fi.
2. Open the Kolet app.
3. Purchase your plan.
4. Enter ARZ9CAWB in the promotional-code field.
5. Go to the app’s home screen.
6. Select Install eSIM.
7. Choose Start Installation.
8. Approve the eSIM installation when prompted.
9. Give the new line a recognisable label such as “Kolet Travel”.
10. Keep the eSIM switched off until you need it.

After Arriving

1. Open your phone’s mobile-network settings.
2. Switch on the Kolet eSIM.
3. Select Kolet as the line used for mobile data.
4. Enable data roaming for the Kolet eSIM if instructed.
5. Disable roaming for your primary UK SIM.
6. Turn off automatic data switching.
7. Wait for the phone to connect to a supported local network.
8. Restart the phone if a connection does not appear.

Kolet supports automatic installation on compatible devices, while an activation-code method may be available when automatic installation is not possible.

Can You Use Kolet as a Mobile Hotspot?

Kolet permits hotspot or tethering use on compatible plans.

This means you may be able to share your connection with:

• A laptop.
• A tablet.
• Another phone.
• A travel companion’s device.
• A Wi-Fi-only device.

Hotspot use can consume data considerably faster, particularly when a laptop begins downloading system updates or syncing cloud files. If several people are connecting, a larger allowance may be more appropriate.

Kolet does not place a specific hotspot restriction on its unlimited plans, although the reduced-speed policy still applies after the daily high-speed allowance has been consumed.

Top-Ups and Rollover

If you begin running out of data, you can purchase another plan through the Kolet app or website.

For eligible standard country and regional plans, topping up before the current plan expires can extend the unused data and validity. Kolet’s current guidance says eligible unused data may roll over for an additional 30 days when the top-up is completed before expiry. Global plans have different validity periods depending on the selected allowance.

It is worth topping up before you completely lose connectivity. Although the app is designed to make top-ups straightforward, you will still need some form of internet access to complete the transaction.

Converting Unused Data Into Koins

Another distinctive feature is the ability to convert eligible unused data from a standard plan into Kolet Koins.

If your trip ends with data remaining, the app may let you stop the plan and convert the unused portion into account credit. The conversion value is shown before you confirm.

To check:

1. Open your active plan in the Kolet app.
2. Select the three-dot menu.
3. Choose Stop plan and convert unused data to credits.
4. Review the number of Koins offered.
5. Confirm the conversion.

Once confirmed, the plan is cancelled and cannot continue to be used. The resulting Koins can be put towards another eligible data plan or an available Kolet calling service.

This feature generally applies to qualifying standard plans rather than free, promotional or unlimited plans.

Sharing Data With Another Kolet User

Kolet also supports data sharing on eligible standard plans.

If you have at least 1GB remaining on an active qualifying plan, you may be able to send whole gigabytes to another Kolet user through the app.

The transfer is normally immediate and cannot be reversed. Data received from another user may also be subject to restrictions, including an inability to convert the transferred data into Koins.

This can be useful for couples, families or groups when one traveller has used more data than another.

Advantages of Using Kolet

No Physical SIM Swap

Your normal SIM stays in your phone, reducing the risk of losing it while travelling.

Prepaid Spending

You select and pay for a defined plan in advance, helping you avoid open-ended roaming charges.

Coverage Across Many Destinations

Country, regional and global plans provide options for both single-destination and multi-country trips.

Reusable Universal eSIM

Once installed, the Kolet eSIM can remain on your phone and be topped up for future travel.

In-App Usage Tracking

You can monitor your remaining allowance and purchase more data if required.

Hotspot Support

Your connection can be shared with compatible laptops, tablets and other devices.

Unused-Data Options

Eligible leftover data may be converted into Koins or preserved through an eligible top-up.

Referral Credit

New customers can enter the Kolet referral code ARZ9CAWB to receive 300 Koins worth £3, subject to the current promotional conditions.

Points to Consider

Kolet will not be the ideal choice for every traveller. Consider the following before purchasing:

• Your phone must support eSIM technology.
• The device must normally be network-unlocked.
• Most plans are primarily for data rather than conventional calls and texts.
• Coverage and speeds depend on local partner networks.
• 5G availability is not guaranteed everywhere.
• A promotional code must be entered before payment.
• Destination and regional coverage lists can change.
• Unlimited plans may reduce speeds after the daily high-speed allowance.
• Your primary UK SIM could still generate roaming charges if configured incorrectly.
• Koins are in-app credit and cannot normally be withdrawn as cash.
• Prices vary by country, region and data allowance.

Kolet should be compared with your UK network’s roaming pass, other travel eSIM providers and local prepaid SIM prices before making a final decision.

Kolet vs UK Mobile Roaming

Feature	Kolet eSIM	UK network roaming
Type	Separate prepaid travel-data plan	Uses your existing UK allowance or roaming pass
Physical SIM swap	Usually not required	Not required
Keeps UK number	Yes, on compatible dual-SIM devices	Yes
Spending control	Prepaid plan	Depends on network charges
Calls and texts	Mainly data-based calling	Usually available through normal number
Multi-country options	Country, regional and global plans	Depends on provider
Referral offer	300 Koins with ARZ9CAWB	Usually not available
Best choice depends on	Destination, usage and plan price	Existing tariff and roaming zone

Neither option is automatically cheaper for every trip. Check the full price and allowance offered for your destination.

Who Is Kolet Best For?

Kolet may be particularly suitable for:

• UK travellers visiting countries with expensive roaming charges.
• People who want mobile data immediately after landing.
• Travellers who do not want to buy a physical local SIM.
• Holidaymakers who mainly communicate through WhatsApp and other internet apps.
• People visiting several countries during one trip.
• Business travellers who need data for maps, email and messaging.
• Travellers with an eSIM-compatible dual-SIM phone.
• Repeat travellers who want one reusable eSIM.
• New customers who can use the Kolet referral code ARZ9CAWB.

It may be less suitable if your device does not support eSIMs, you need a new local telephone number or your UK tariff already includes generous roaming at no additional charge.

Frequently Asked Questions

What is the Kolet referral code?

The Kolet referral code is ARZ9CAWB.

What do I get for using ARZ9CAWB?

The stated offer gives eligible new customers 300 Koins worth £3, subject to Kolet’s current referral terms.

Where do I enter the referral code?

Open the Kolet app, select a destination and data plan, continue to checkout and tap “+ Add a promo code”. Enter ARZ9CAWB before paying.

Can existing Kolet customers use the code?

The referral offer is generally intended for new customers. It may not work if you have previously bought a plan or claimed another Kolet welcome gift.

Can I use the code after buying a plan?

Promotional codes should be entered before the order is completed. They generally cannot be added retrospectively.

Can I use more than one promotional code?

Kolet says only one promotional code can normally be applied to an order. However, an existing Koin balance may be used alongside a promotional code where permitted.

Are Kolet Koins real money?

No. Koins are promotional or account credit for eligible purchases and services inside Kolet. They cannot normally be withdrawn as cash.

Do Kolet Koins expire?

Kolet’s general credit guidance says Koins expire three years after being credited. Check the information displayed in your Kolet account because specific promotional conditions may differ.

Does the Kolet eSIM come with a phone number?

The data eSIM does not normally provide a conventional mobile number. You can make calls through apps such as WhatsApp, FaceTime and Messenger. Kolet also offers app-based international calling using Koins where available.

Can I keep using my normal SIM?

Yes, if your phone supports the required dual-SIM arrangement. Use Kolet for data and keep your usual SIM for your UK number, while taking care to prevent roaming charges.

When should I install the eSIM?

Install it before travelling while connected to reliable Wi-Fi. Activate the data plan after arriving at your destination.

Does the plan start when I install the eSIM?

Kolet says the plan begins when you activate it at the destination and start using data, rather than simply when the eSIM is installed.

Can I use Kolet for tethering?

Yes, hotspot use is supported on compatible devices and plans.

Can I top up while abroad?

Yes. You can purchase additional data through the app or website, although you will need an internet connection to complete the transaction.

Can I convert unused data into Koins?

Eligible unused data from qualifying standard plans may be converted through the app. Confirm the conversion value before cancelling the plan.

Is Kolet a contract?

Kolet’s travel plans are prepaid. You purchase the required data rather than signing up for a conventional monthly mobile contract.

Final Verdict: Is the Kolet Referral Code Worth Using?

If you are already planning to purchase a Kolet travel eSIM, using the Kolet referral code ARZ9CAWB is a straightforward way to claim 300 Koins worth £3.

Kolet offers an appealing combination of broad international coverage, prepaid data, a reusable universal eSIM, in-app top-ups, hotspot support and the ability to turn eligible unused data into future credit. It can be particularly useful for UK travellers who want predictable mobile-data costs without replacing their normal SIM card.

The most important steps are to confirm that your phone is compatible and unlocked, compare the available plan with your existing roaming tariff, install the eSIM before departure and enter the referral code before completing the purchase.

Claim the Kolet Referral Offer

Referral code: ARZ9CAWB

Reward: 300 Koins worth £3

Download the Kolet app, choose an eligible data plan and enter ARZ9CAWB in the promotional-code field at checkout.

Important Referral Disclosure

This article contains a personal referral code. If you use ARZ9CAWB and complete the qualifying requirements, you may receive the stated new-customer benefit and the person sharing the code may also receive Kolet credit. This should not increase the price you pay.

Referral rewards, exchange values, plan prices, coverage and eligibility requirements may change. Check the offer shown in the Kolet app and read the current terms before purchasing.