How to Set Up a Travel eSIM on iPhone 16: Complete Guide (2026)

Step-by-step guide to installing and activating a travel eSIM on iPhone 16 and iPhone 16 Pro. Covers QR code setup, manual installation, dual SIM configuration with your home number, and what to do when things go wrong.

What You Need Before Starting

• iPhone 16, 16 Plus, 16 Pro, or 16 Pro Max (all models support eSIM)

• iOS 18 or later (Settings → General → Software Update to check)

• Unlocked phone — carrier-locked iPhones may block third-party eSIMs

• WiFi connection — you need internet to download the eSIM profile

• Your eSIM QR code — you'll get this by email after purchasing a travel eSIM plan

Important: iPhone 16 models sold in the US have no physical SIM tray — they're eSIM only. Models sold in other regions have one nano-SIM slot plus eSIM support.

Step 1: Buy Your Travel eSIM Plan (Before Your Trip)

Don't wait until you're at the airport. Buy and install your eSIM while you're still on WiFi at home.

1. Go to eSIMHop plans and select your destination country

2. Choose a plan based on how much data you need (not sure? check our data usage guide)

3. Complete checkout — you'll receive a QR code and activation details by email within minutes

Step 2: Install the eSIM via QR Code

This is the fastest method. Takes about 2 minutes.

1. Open Settings → Cellular → Add eSIM

2. Tap Use QR Code

3. Point your iPhone camera at the QR code from your email

   • If the QR code is on the same iPhone, take a screenshot first, then use Enter Details Manually instead (you can't scan a QR code displayed on the same phone)

4. Tap Continue when the cellular plan details appear

5. Wait for "Activating..." — this usually takes 10-30 seconds

6. When prompted, label the eSIM (e.g., "Japan Travel" or "Thailand Data") — this helps you identify it later

Alternative: Manual Installation

If the QR code won't scan, use manual entry:

1. Open Settings → Cellular → Add eSIM → Enter Details Manually

2. Enter the SM-DP+ Address and Activation Code from your provider's email

3. These are case-sensitive — copy-paste if possible

4. Tap Next and wait for activation

Step 3: Configure Dual SIM (Keep Your Home Number)

After installing the travel eSIM, your iPhone will ask how you want to use your two lines. This is critical to get right.

Set your lines like this:

How to configure:

1. Go to Settings → Cellular

2. Tap Default Voice Line → select your home SIM

3. Tap Cellular Data → select your travel eSIM

4. Turn OFF "Allow Cellular Data Switching" — this prevents your phone from secretly using your expensive home SIM for data

Step 4: Activate When You Arrive

Most travel eSIMs start counting your data/validity period when you first connect to a network at your destination. So don't activate until you arrive.

1. When your plane lands, go to Settings → Cellular

2. Tap your travel eSIM line

3. Turn ON Turn On This Line

4. Turn ON Data Roaming — yes, you need this even with a travel eSIM. Without it, your phone won't connect to foreign networks

5. Wait 10-30 seconds. You should see signal bars and a carrier name appear

If it doesn't connect:

• Toggle Airplane Mode on → wait 10 seconds → off

• If still nothing, restart your iPhone

• See our full troubleshooting guide for more fixes

Step 5: Verify Your Connection

Once connected, verify everything is working:

1. Open Safari and load any webpage — if it loads, your data is working

2. Check Settings → Cellular → your travel eSIM should show data usage increasing

3. Open Maps and confirm location works

4. Send a WhatsApp or iMessage to confirm messaging works

Managing Your eSIM During the Trip

Check Remaining Data

• Settings → Cellular → tap your travel eSIM → check data usage under "Current Period"

• Note: this shows total data used since installation, not remaining data. Check your provider's dashboard for remaining balance

Switch Data Lines

If you need to temporarily switch back to your home SIM for data:

• Settings → Cellular → Cellular Data → select your home SIM

• Remember to switch back to your travel eSIM to avoid roaming charges

Top Up Data

Running low? You can purchase additional data on eSIMHop without reinstalling. Many plans support instant top-ups.

After Your Trip

When you're done traveling:

1. Go to Settings → Cellular → tap your travel eSIM

2. Turn OFF Turn On This Line

3. Switch Cellular Data back to your home SIM

4. Don't delete the eSIM if you plan to visit the same country again — some plans allow reactivation or top-ups

If you want to remove it permanently:

• Settings → Cellular → tap the travel eSIM → Delete eSIM

• Warning: once deleted, the QR code usually can't be reused. You'll need to purchase a new plan

iPhone 16 eSIM FAQ

How many eSIMs can iPhone 16 store?

iPhone 16 can store up to 8 eSIM profiles, but only 2 can be active simultaneously. You can switch between stored profiles without re-scanning QR codes.

Can I use two travel eSIMs at the same time?

Yes. iPhone 16 supports dual eSIM — you can have two eSIMs active at once. Useful if you're visiting two countries and want both plans ready.

Will my WhatsApp still work?

Yes. WhatsApp is tied to your phone number, not your SIM. As long as your travel eSIM provides data, WhatsApp will work normally with your existing number.

Does the eSIM drain more battery?

Having two active SIMs uses slightly more battery (roughly 5-10% more per day). If battery is a concern, disable your home SIM line when you don't need it.

Can I install the eSIM before my trip and activate it later?

Yes, this is recommended. Install at home on WiFi, then activate when you land. Most plans start counting validity from first network connection, not from installation.

What if my iPhone 16 is carrier-locked?

You'll need to unlock it first. Contact your carrier — in many countries they're required to unlock your phone after the contract period or upon request. A locked iPhone will show "Cellular Plan Cannot Be Added" when you try to install a third-party eSIM.

Ready for your next trip? Browse eSIM plans for 170+ countries — plans start from $1.00 with instant QR code delivery.