How can we help?
Short, direct answers about choosing, installing and using a Horizon travel eSIM, grouped by topic.
About eSIM and compatibility
8What an eSIM is, and how to check that your phone can use one.
What is an eSIM?
An eSIM is a digital SIM profile that you download to a compatible phone instead of inserting a plastic card. A Horizon travel eSIM adds a prepaid mobile-data line for your trip, and your usual SIM can stay in the phone.
How does a Horizon travel eSIM work?
Choose a plan for one country, a region or a wider route, and pay online. The installation details arrive by email and in My eSIMs. Install the eSIM over Wi-Fi, then switch the line on when you arrive: it connects to a supported local network and uses your plan’s data.
Will my phone work with Horizon?
Compatibility depends on the exact model, sales region, carrier lock and firmware. Confirm that the phone is unlocked, check for an EID, and verify the exact model or variant on our supported devices page before buying.
Which iPhones support eSIM?
iPhone XR, iPhone XS and newer models support eSIM, including iPhone SE (2nd and 3rd generation). Some variants differ by sales region, so check your exact model on our supported devices page before you buy.
Which Android phones support eSIM?
Many recent Samsung Galaxy, Google Pixel, Motorola and OnePlus phones support eSIM, but support varies by model, sales region and carrier. Look for an EID under Settings → About phone, and check the exact model on our supported devices page.
Can I use Horizon on an iPad or tablet?
Yes, if the tablet supports eSIM and has mobile data. On iPad that means a Wi-Fi + Cellular model; Wi-Fi-only models cannot use an eSIM. Check the exact model on our supported devices page.
How do I know if my phone is carrier-locked?
On iPhone, open Settings → General → About. Carrier Lock should say “No SIM restrictions”. On Android, the carrier that sold you the phone can confirm its lock status. A locked phone cannot use another provider’s eSIM, so ask that carrier to unlock it before you buy.
Does a Horizon eSIM include a phone number, calls or SMS?
No. Horizon plans are data-only. Use internet-based apps such as WhatsApp, Viber or FaceTime over the data connection, and keep your usual SIM switched on if you need calls and texts on your own number.
Before you buy
8Choosing the right plan, the right amount of data and the right time to buy.
Can I keep my home number and WhatsApp?
Yes. Horizon installs as a second line next to your usual SIM. Keep your usual line on for calls and texts and choose Horizon for mobile data. WhatsApp keeps your existing number. Your home carrier may still charge for calls, texts or data on its own line.
Should I choose a local, regional or global plan?
Choose a local plan when you stay in one country. A regional plan covers a listed group of countries, and a global plan covers a wider list of destinations. Coverage depends on the selected plan, so check that every stop on your route is in its current plan details.
How much data do I need?
Maps, messaging and browsing use less data than video calls, streaming, cloud backups or hotspot sharing. Check how much mobile data your phone used in a recent month, allow for the length of your trip and leave some room to spare. Each plan page estimates what its data allowance covers.
Can I use one eSIM in several countries?
Yes, with a regional or global plan that lists every country on your route. A local plan works only in its own country. Check the coverage list on the plan page, including countries you only pass through.
Can I use one eSIM on several phones?
No. An installed eSIM profile is tied to one device. Buy a separate plan for each phone or tablet that needs its own data, or share your data with the personal hotspot.
Can I buy an eSIM for someone else?
Yes. Family & Friends lets you buy separate eSIMs for other people from your account and send each person a secure install link. Share each link only with the person it is meant for.
How early can I buy my eSIM?
Whenever you like. Validity does not start until your eSIM connects to a supported mobile network at your destination, so you can install it before you travel. There is no deadline for first use. You can buy now and keep your plan for a future trip.
Is there a Horizon app?
Yes. The Horizon app for iPhone and Android lets you buy plans, install your eSIM and manage it in My eSIMs, with the same account you use on the website.
Installing and activating
9From the QR code to your first connection abroad.
How do I install my eSIM?
Open the installation details in My eSIMs or in your order email. On iPhone, go to Settings → Mobile Data (or Cellular) → Add eSIM and scan the QR code. On Android, go to Settings → Network & internet → SIMs → Add eSIM; menu names vary by manufacturer. Use a stable Wi-Fi connection while you install.
When should I install my eSIM?
Install it over Wi-Fi before you leave, for example the day before your trip. Installing does not start your plan. If you do not need the line yet, keep it switched off until you arrive.
When does validity start?
Validity does not start until your eSIM connects to a supported mobile network at your destination, so you can install it before you travel. There is no deadline for first use. You can buy now and keep your plan for a future trip.
What do I do when I land?
Switch the Horizon line on, choose it for mobile data and turn on data roaming for that line. There is no separate activation step. Keeping data roaming off on your usual SIM helps you avoid data charges from your home carrier.
Why do I need to turn on data roaming for the Horizon line?
A travel eSIM connects to local networks abroad, so your phone treats it as roaming. Turning data roaming on for the Horizon line lets it connect. Your Horizon plan is prepaid: Horizon does not bill you after checkout for the data you use.
What if the QR code won’t scan?
Use manual entry. Your installation details include an SM-DP+ address and an activation code. Choose the manual option on the same Add eSIM screen and enter them there. Keep these details private.
How do I scan the QR code if it is on the same phone?
Use the install link when your order offers one, open the QR code on a second screen, or use manual entry with the SM-DP+ address and activation code from your installation details.
What if I delete the eSIM by accident?
Contact support before you try to install it again. Whether a deleted profile can be installed again depends on that eSIM, so never delete it as a troubleshooting step.
I’m changing phones. Can I move my eSIM?
Contact support before you reset or replace the phone. An installed eSIM profile may not move to another phone or survive a reset, and whether it can be installed again depends on that eSIM.
Using data abroad
7Speed, hotspot, dual-SIM settings and what happens when your data runs out.
Will Horizon slow down my data?
No. Horizon plans have no throttling. There is no daily limit that slows you down, so you can use your whole plan in one day if you need to. Your speed depends on the local network, your signal and how busy the network is. When your data allowance is used up, the plan stops rather than slowing down.
Does Horizon support personal hotspot and tethering?
Hotspot sharing is free on every Horizon plan. Horizon plans have no throttling. Enable Personal Hotspot on a compatible phone and keep Horizon selected for mobile data.
Which line should my phone use for mobile data?
Choose Horizon as the mobile-data line and keep your usual line for calls and texts if you need them. On iPhone, turn off Allow Mobile Data Switching; Android phones have a similar setting. Otherwise the phone can fall back to your home line for data.
Will my home carrier charge me while I use Horizon?
You pay Horizon only for the plan you buy at checkout. Your home carrier may still charge for calls, texts or data on your usual line, so turn off data roaming on that line and check its rates.
How can I check how much data I have left?
Sign in and open My eSIMs to see your plan, its status, your remaining data and its validity. You can refresh usage there, but networks can report it with a delay.
What happens when my data runs out?
The plan stops rather than slowing down. You can add data from My eSIMs when a top-up is offered for your eSIM, or buy another plan.
Can I pause my plan?
No. Once your plan has started, switching the line off does not pause or extend its validity. Before your trip, keep the line off: validity does not start until your eSIM connects to a supported mobile network at your destination.
Top-ups and plans
5Adding data, days or another country to the eSIM you already have.
How do I top up?
Open My eSIMs, select your eSIM and choose Top up for the same destination, or Add country for your next stop, when these options are shown. A top-up adds a plan to the eSIM already on your phone, so there is no new QR code to scan.
Can I add another country to the same eSIM?
Sometimes. When My eSIMs shows Add country for your eSIM, the new plan is added to the eSIM you already installed. Some destinations need a separate new eSIM, which comes with its own installation details.
When does a top-up start?
A top-up has its own validity. It does not start until its first connection to a supported network in a covered destination. If your current plan for that destination is still running, the new plan starts when the current one runs out or expires.
Can I add more days without adding data?
Where offered, current top-up options combine data and validity. Check My eSIMs for the eligible options on the selected plan.
Does my plan renew automatically?
No. Horizon travel plans are prepaid, one-time purchases. Nothing renews and you are not charged again unless you buy another plan or a top-up.
Payments, refunds and discounts
10How you pay, how refunds work and the offers you can use.
What payment methods do you accept?
You can pay by Visa or Mastercard, or with Apple Pay or Google Pay where your device supports them. Checkout shows the methods available for your order. Signed-in customers can also spend Horizon credit on a plan or top-up.
Which currency are prices in?
Prices and checkout totals are in euros (EUR). If your card account uses another currency, your bank converts the amount and may add its own fee.
Is paying on Horizon secure?
Card payments are processed on the secure checkout of our payment provider. Horizon does not store your full card details.
Can I get a refund?
We always refund the full amount you paid when you request it, whether your eSIM is unused, partly used or fully used. There is no time limit for requesting a refund.
How do I request a refund, and how long does it take?
Message us on WhatsApp or email and tell us the email address you used at checkout. You do not need to give a reason. We refund the original payment method, and after we issue the refund it typically takes 5–10 business days to appear, depending on your bank.
Is there a discount on my first order?
Yes, while the welcome offer is running. Create a Horizon account before you pay and the discount applies to your first paid order by itself, with no code to type. The current percentage is shown on the welcome offer page.
How does Refer & earn work?
Share your personal code from the Refer & earn page. When a friend signs up with it and buys a qualifying first eSIM, your friend saves and you earn Horizon credit. The current amounts and conditions are shown on that page.
What is Horizon cashback?
When you are signed in, every plan and top-up returns a share of what you pay as Horizon credit. You can spend it on your next plan or top-up; it is not paid back to your card, and it expires after a set period. The cashback page shows the current rate and terms.
Can I combine discounts?
No. One discount applies per order. If you qualify for more than one, checkout uses the larger one.
Can I get a receipt or an invoice?
Your receipt is sent to your checkout email, and signed-in customers find their orders under Orders & receipts. If you need an invoice with company details, contact support with your checkout email and the details to show.
Account and orders
6Signing in, finding your eSIM and managing your account.
Do I need an account to buy?
No. You can check out as a guest with your email address. An account keeps your eSIMs in My eSIMs, lets you top up and earn cashback, and is needed for the welcome offer.
How do I sign in?
Sign in with your phone number and a code sent by WhatsApp or SMS, with your email and password, with a sign-in link sent to your email, or with Google. Never share a sign-in code with anyone, including support.
I didn’t receive my eSIM email. What should I do?
Check My eSIMs if you have an account, then your spam or promotions folder. Delivery timing can vary. If it is still missing, contact us with the email address you used at checkout. Please do not pay again while an order is pending.
I bought as a guest. Why is My eSIMs empty?
Sign in with the same email address you used at checkout and verify it. Until then, use the secure order link in your confirmation email to see your installation details.
I entered the wrong email at checkout. What now?
Contact us from an address you can access and tell us the address you entered. We verify that the order is yours before we change any delivery or account details.
How do I delete my account?
Open your profile and choose to delete your account. Orders, invoices and payment records are kept for legal and tax reasons.
Troubleshooting
6Step-by-step checks when something does not work as expected.
What if I don’t have signal?
Check that your location is in your plan’s coverage. Then turn airplane mode on and off, and confirm data roaming is on for the Horizon line (this is normal for travel eSIMs). If there is still no signal, restart the phone.
I have signal but no internet. What should I check?
Make sure the Horizon line is on, selected for mobile data and has data roaming turned on. Turn airplane mode on and off, then restart the phone. If it still does not work, contact us with your location, your phone model and what the phone shows.
Why is my data slow?
A weak signal or a busy local network is the usual cause. Horizon plans have no throttling. Check whether the network is 4G or 5G where you are, turn airplane mode on and off, and if the signal stays weak, choose another listed network in your phone's mobile network settings.
The code says it is invalid or already used. What now?
First check whether the eSIM is already installed: look for a second line in your phone’s SIM or mobile-data settings, and do not delete it. If it is not there, contact us with the exact error text, but never the code itself.
My phone has no Add eSIM option. What does that mean?
The phone may not support eSIM, or it may be carrier-locked or a regional variant without eSIM. Check the exact model on our supported devices page. If you cannot use the plan, our full refund policy still applies.
My data stopped after I crossed a border. Why?
Check that the new country is listed in your plan’s coverage; a local plan covers only its own country. If the country is listed, turn airplane mode on and off and, if needed, choose a network manually in your mobile network settings.
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