After installing your Montenegro eSIM before departure, the final step is activation. Fortunately, activating a travel eSIM is usually quick and only takes a few minutes once you arrive in Montenegro.
Whether you’re landing at Podgorica Airport, arriving through Tivat Airport, crossing the border by car or coming by cruise ship to Kotor, your eSIM can be activated shortly after reaching Montenegro.
Quick answer: once you arrive in Montenegro, turn on your Montenegro eSIM, enable Data Roaming, select it as your Mobile Data line and leave Network Selection on Automatic. Most travel eSIMs activate when they first connect to a supported local network.
Top Montenegro eSIMs
Montenegro eSIM
Fixed
1 GB, 7 days€ 3.462 GB, 15 days€ 5.193 GB, 30 days€ 6.92Unlimited
Unlimited, 1 day€ 3.89Unlimited, 3 days€ 8.22Unlimited, 5 days€ 12.55
Balkans eSIM
Fixed
1 GB, 7 days€ 4.332 GB, 15 days€ 6.923 GB, 30 days€ 9.09Unlimited
Unlimited, 1 day€ 4.76Unlimited, 3 days€ 10.82Unlimited, 5 days€ 16.87Activation vs Installation
Many travelers confuse installation with activation, but they are two different steps.
| Step | When? | Purpose |
|---|---|---|
| Install eSIM | Before traveling | Add the eSIM profile to your phone |
| Activate eSIM | After arriving in Montenegro | Connect to the local mobile network |
Before You Activate
Before turning on your Montenegro eSIM, make sure:
- Your eSIM has already been installed.
- Your phone supports eSIM.
- Your phone is carrier unlocked.
- You have arrived in Montenegro.
- Your primary SIM remains active if you want to receive calls and SMS.
Step 1: Turn On Your Montenegro eSIM
Open your phone settings and enable the Montenegro eSIM if it is currently turned off.
On iPhone
- Open Settings.
- Select Cellular or Mobile Service.
- Choose your Montenegro eSIM.
- Turn the line ON.
On Android
- Open Settings.
- Go to SIM Manager or Network & Internet.
- Select the Montenegro eSIM.
- Enable the SIM.
Step 2: Select the eSIM for Mobile Data
Your phone may still be using your home SIM for internet.
Change the Mobile Data line to your Montenegro eSIM.
| Setting | Recommended Value |
|---|---|
| Mobile Data | Montenegro eSIM |
| Calls | Primary SIM |
| SMS | Primary SIM |
Step 3: Enable Data Roaming
This is the step most travelers forget.
Travel eSIMs almost always require Data Roaming to be enabled on the eSIM line. Turning it on does not normally create unexpected charges because your prepaid travel eSIM already includes your purchased data allowance.
Step 4: Leave Network Selection on Automatic
Allow your phone to choose the strongest supported network automatically.
Manual network selection is usually unnecessary unless instructed by customer support.
Step 5: Wait for the Connection
After enabling the settings, wait a few minutes while your phone registers with the local network.
You should see signal bars and either LTE, 4G or 5G depending on your location and network availability.
Recommended Phone Settings
| Setting | Recommended Value |
|---|---|
| Mobile Data | Montenegro eSIM |
| Primary SIM | Calls and SMS |
| Data Roaming | ON for the eSIM |
| Network Selection | Automatic |
| Automatic Data Switching | OFF |
| APN | data.esim if required |
Can You Keep Your Home SIM Active?
Yes. Most Dual SIM smartphones let you keep your regular SIM active while your Montenegro eSIM provides mobile data.
- Receive calls.
- Receive SMS verification codes.
- Keep your existing number.
- Use the Montenegro eSIM for internet.
- Continue using WhatsApp normally.
Does WhatsApp Work?
Yes. WhatsApp remains linked to your existing phone number. Activating your eSIM only changes your internet connection and does not affect your chats or contacts.
Can You Use Personal Hotspot?
Yes. Most Montenegro travel eSIMs support Personal Hotspot or Mobile Hotspot, allowing you to connect a laptop or tablet when needed.
How Much Data Do You Need?
| Trip Length | Recommended Data |
|---|---|
| Weekend trip | 1–3 GB |
| One week | 5–10 GB |
| Two weeks | 10–20 GB |
| Remote work | 20 GB+ |
| Heavy hotspot use | 20 GB+ or Unlimited |
Common Activation Problems
- Data Roaming is disabled.
- The wrong SIM is selected for Mobile Data.
- Network Selection is set manually.
- Automatic Data Switching is enabled.
- The phone is still in Airplane Mode.
- The device has not been restarted after arrival.
- The APN is missing.
How to Fix an eSIM That Doesn’t Activate
- Restart your phone.
- Enable Data Roaming.
- Select the Montenegro eSIM for Mobile Data.
- Turn Airplane Mode on for 30 seconds.
- Turn Airplane Mode off.
- Keep Network Selection on Automatic.
- Verify the APN is data.esim if manual configuration is required.
- Wait a few more minutes for the network registration to complete.
Travel Tips
- Install the eSIM before departure.
- Activate it only after arriving in Montenegro.
- Keep your QR code until the trip is finished.
- Download offline maps before driving through mountain areas.
- Carry a power bank.
- Save important travel documents offline.
Related Montenegro Guides
- Montenegro eSIM
- How to Install a Montenegro eSIM
- Montenegro eSIM for iPhone
- Montenegro eSIM for Android
- Does My Phone Support eSIM?
- Montenegro eSIM Not Working
- APN Settings for Montenegro eSIM
- Mobile Internet in Montenegro
FAQ
When should I activate my Montenegro eSIM?
Activate it after arriving in Montenegro by enabling the eSIM, selecting it for Mobile Data and turning on Data Roaming.
Do I need to enable Data Roaming?
Yes. Most travel eSIMs require Data Roaming to be enabled for mobile data to work properly.
Can I activate the eSIM before arriving?
You can install it before traveling, but most Montenegro travel eSIMs become active when they first connect to a supported network in Montenegro.
Can I keep my normal phone number?
Yes. Your primary SIM can remain active for calls and SMS while your Montenegro eSIM provides mobile data.
Does WhatsApp still work?
Yes. WhatsApp continues using your existing phone number.
What APN should I use?
If manual configuration is required, use data.esim.
Final Recommendation
Activating a Montenegro eSIM is simple once you arrive. Turn on the eSIM, select it as your Mobile Data line, enable Data Roaming and allow your phone to connect automatically to a supported network. With these settings in place, you’ll be ready to enjoy reliable mobile internet throughout Montenegro while keeping your regular phone number active.