Unlimited Extra Days eSIM – mobile data for your trip

eSIM Unlimited Extra Days

Name: Unlimited Extra Days eSIM
Brand: Simbye
SKU: T1UX_A_1
Price: 3.95 EUR
Availability: InStock

Best eSIM for Unlimited Extra Days from 3,95€ – lowest prices, instant activation on Premium. Keep your WhatsApp number, no contract.

Instant delivery

Network: Premium 4G/5G

24/7 WhatsApp support

Money-back guarantee

Secure payment

Valid for +1 Days

4,94€ 3,95€

Valid for +2 Days

8,69€ 6,95€

Popular

Valid for +3 Days

12,44€ 9,95€

Valid for +4 Days

16,19€ 12,95€

Valid for +5 Days

19,94€ 15,95€

Valid for +6 Days

23,69€ 18,95€

Valid for +7 Days

26,19€ 20,95€

Your Selection

Unlimited Extra Days eSIM-

NetworkPremium

Duration-

Total-

Your plan only starts counting when the eSIM first connects at your destination — so you can buy today and travel in three weeks.

4.82400 reviews

How does Simbye eSIM work for Unlimited Extra Days?

Get connected in under 2 minutes

Choose your eSIM data plan for Unlimited Extra Days

Select a plan that suits your needs and purchase it. You will receive a QR code via email.

Tap Install Button

Open the email and tap on Install eSIM.

Enable Data Roaming

The eSIM can only be activated in Unlimited Extra Days. Then turn on data roaming and your phone connects on its own.

Check Device Compatibility

Make sure your device supports eSIM before purchasing

Why choose our eSIM?

The Simbye Unlimited Extra Days add-on extends an Unlimited eSIM you already bought from Simbye by 1 to 7 days. The days are added to that same eSIM, so you keep using the profile already installed on your device.

Unlimited Extra Days at a glance

Extends: an Unlimited eSIM you already bought from Simbye
Extra days: 1, 2, 3, 4, 5, 6 or 7 days, from +1 Day to +7 Days
Where the days go: onto your existing eSIM, which stays installed on your device
Contract: none
Manage: your eSIM and your remaining days in the Simbye app
Works with: any eSIM-compatible iPhone or Android phone

How to add extra days to your Unlimited eSIM

Make sure you have an active Unlimited eSIM from Simbye.
Select the number of extra days you need and complete the purchase.
The days are added to that eSIM. Keep using the profile already installed on your device.

Unlimited Extra Days: questions and answers

Will my data keep running after my original period ends?

Yes. The extra days are added to your existing Unlimited eSIM, so you can keep using data after your original period ends.

How many extra days can I add?

You can add between one and seven days. The options run in single-day steps from +1 Day to +7 Days.

Do I need a second eSIM to extend my stay?

No. You extend your stay without buying a second eSIM, because the days go onto the eSIM you already use.

Is Unlimited Extra Days the right choice for me?

It fits if you already own a Simbye Unlimited eSIM and your trip runs longer than planned.

Network

4G/5G Premium

Coverage

98% Country Coverage

Speed

4G/5G

Data Plans

+1, +2, +3, +4, +5, +6, +7

Validity after Activation

7-180 Days

Hotspot

Yes

Voice Call

✗ Voice apps only

Plan Type

Prepaid eSIM

eKYC (Identity Verification)

✗ No

Delivery

2 MIN

Phone Number

✗ No

eSIM Validity

180 Days

What does an eSIM for Unlimited Extra Days cost?

Simbye offers 7 plans for Unlimited Extra Days from €3,95 to €20,95 — prepaid, no contract.

Validity runs from 1 to 7 days and starts with your first connection in Unlimited Extra Days.

from €3,95

7 plans · 1–7 days

Unlimited €3,95 1 days €3,95 per travel day
Unlimited €6,95 2 days €3,47 per travel day
Unlimited €9,95 3 days €3,31 per travel day
Unlimited €12,95 4 days €3,23 per travel day
Unlimited €15,95 5 days €3,19 per travel day
Unlimited €18,95 6 days €3,15 per travel day
Unlimited €20,95 7 days €2,99 per travel day

Updated: Sep 2, 2026

Frequently Asked Questions about Unlimited Extra Days eSIM

Data, calls, real phone numbers, top-ups and setup — everything you need to know before you buy a Simbye eSIM.

How much data do I get with Unlimited Extra Days?

Is Unlimited Extra Days the right choice for me?

What is an eSIM and how does it work for travel?

An eSIM is a digital SIM card already built into your phone — nothing arrives by post and you never open the SIM tray. You buy a plan, save it to your phone over Wi-Fi, and it sits next to your usual line. At your destination you simply choose which line carries your mobile data. Your own number stays in the phone and stays reachable, and when you get home you switch the travel line off again.

Can I top up or recharge my eSIM?

Yes, using the eSIM that is already on your phone — no second eSIM and no new QR code. Enter your order number on our top-up page and pick a package. Top up while your plan is still running and it continues without a break, so you do not have to hunt for Wi-Fi abroad. On the data plans you add gigabytes; on the unlimited plans you add days.

Which phones are eSIM compatible?

Only phones with the chip built in can use an eSIM: on iPhone that is every model from the XS and XR onwards, on Samsung the Galaxy S models from the S20 plus the Note 20 and the Fold and Flip range, and on Google every Pixel from the Pixel 3. For other Android phones there is no rule of thumb — plenty of budget and mid-range models still have no eSIM even when they are brand new, and some Asian variants do not have one despite carrying the same name. Check your exact model under "Check compatibility" further up this page: if it is not on the list, it cannot do eSIM. Your phone also must not be locked to one operator.

How fast will I receive my eSIM after purchase?

Does a travel eSIM come with a phone number?

Most travel data eSIMs are data-only, so you simply keep your own number for WhatsApp, iMessage and app-based calls. But Simbye goes further: we also offer eSIMs that include a real phone number — a US eSIM with a +1 number, a UK eSIM with a +44 number, and country eSIMs that include calls and a real phone number. With these eSIMs you can call, text and register WhatsApp, Telegram or any app, and the codes arrive right on your phone — no extra app needed. On top of that, we offer virtual numbers from the USA, the UK, the Netherlands and Australia — your own real number, no SIM card needed. SMS and verification codes show up in the Simbye app and on your order page on simbye.com; with the optional calls add-on, the UK, Dutch and Australian numbers also receive incoming calls in the Simbye app.

Do I need to activate data roaming on my device?

Yes, you need to enable data roaming in your device settings for your Simbye eSIM to work properly. Don't worry – with Simbye you won't face any roaming charges! Simply go to your phone's settings, select your Simbye eSIM, and turn on data roaming. You'll be connected instantly without extra fees.

What happens when my data runs out?

On the data plans, the connection simply stops when your allowance is used up — no surprise charges and nothing renews by itself. On the unlimited plans you stay online, just slower: once the daily full-speed allowance is used up you keep browsing at a reduced speed, and the next day starts at full speed again. You can top up at any time.

Does the eSIM work for WhatsApp calls and video?

Yes. WhatsApp, FaceTime, Zoom and video calls all run over the data connection. On the data plans you get full speed for that. On the unlimited plans there is a daily full-speed allowance — after that it is still enough for messages and voice calls, but video may stutter. The next day starts at full speed again.

Can I keep my WhatsApp number?

Yes, absolutely! Your WhatsApp number stays the same because it's linked to your original phone number, not your SIM card. With Simbye eSIM providing data, you can continue using WhatsApp with your existing number and contacts worldwide. Stay connected without changing a thing!

How do I install and activate my eSIM?

Installing your Simbye eSIM takes less than 60 seconds — one of the fastest setups of any eSIM provider! After buying your eSIM online, you receive a QR code via email. Scan it with your phone camera (iPhone: Settings → Cellular → Add eSIM; Samsung: Settings → Connections → SIM Manager), follow the prompts, and your eSIM activates instantly. No app download required — though our Simbye app makes managing multiple eSIMs even easier.

When should I set up my eSIM?

You need WiFi to install your eSIM, so we recommend setting it up shortly before your departure while you're still at home. Alternatively, you can wait until you arrive at your destination and connect to airport or hotel WiFi. Just remember – you'll need an internet connection for the initial setup, but after that, you're good to go!

Can I use my eSIM as a mobile hotspot?

Most Simbye eSIMs support hotspot/tethering: simply enable hotspot in your device settings and connect your laptop, tablet or other devices. Keep in mind that hotspot usage counts toward your data package, and a few unlimited plans limit or exclude hotspot — you’ll find the details on each product page.

How do I check how much data I have left?

Open the Simbye app and tap My eSIMs — your remaining data is right there. Without the app, go to simbye.com/pages/plans and enter your order number and email. On Orange plans you can also dial #123# straight from your phone. The figures come from the network, so they can lag a little behind your actual use.

What happens if I lose or delete my QR code?

Nothing is lost. Your QR code stays in your order email, in the Simbye app under My eSIMs, and on simbye.com/pages/plans with your order number and email — so you can pull it up again whenever you need it. Once a profile is installed it stays on your phone. A few plans allow one installation only; that is noted with the plan.

Do I get cashback when I buy?

Yes — 5% of what you spend comes back as credit in your Simbye wallet. It lands there by itself, whether you buy in the app or on the website. You can put that credit towards your next plan or use it when you top up an existing eSIM. Nothing to claim, nothing to activate.

Will my speed be throttled?

Data plans are not throttled — you keep full speed until your volume is used up. Unlimited plans have a fair-use threshold: once you pass it you stay connected, just slower. Maps, messengers, email and music keep working; high-resolution streaming does not. The exact threshold is stated with the plan you are looking at.

Can people still reach me on my own number?

Yes — the eSIM sits next to the SIM you already have, so your own number stays active and calls and texts still come through. One thing to watch: your phone still places outgoing calls over your main SIM, at your home provider's rates. For talking, use WhatsApp or a similar app over your eSIM data instead.

When does my plan start counting down?

Your validity starts the moment the eSIM first connects to a network at your destination — not when you buy it, and not when you install it. That is why you can order weeks ahead and set everything up at home in peace. A few plans should only be installed after you arrive; if yours is one of them, your delivery email says so.