If you own an Apple Watch with cellular capability and you’re on Airtel in India, you can activate an eSIM directly on the watch. This means your watch gets its own connection to Airtel’s network — independent of your iPhone.
You can go for a run, leave your phone at home, and still receive calls, reply to messages, stream music, and use apps like Maps. Your watch number mirrors your iPhone number, so people calling you reach you on both devices without knowing which one you’re using.
This guide walks through exactly how to set it up, what you need beforehand, what to do if something goes wrong, and whether the monthly cost is actually worth it for your lifestyle.
eSIM on Apple Watch Airtel:-What You Need Before You Start
Before jumping into the setup, make sure you have the following:
A cellular-capable Apple Watch. Not all Apple Watch models support cellular. The ones that do include Apple Watch Series 4 and later (with GPS + Cellular variant), Apple Watch SE (2nd generation, cellular variant), and Apple Watch Ultra and Ultra 2. If your watch only has GPS, it cannot connect to any network independently — eSIM won’t be an option.
An Airtel postpaid connection. As of 2026, Airtel’s Apple Watch eSIM plan is available on postpaid plans only. Prepaid users cannot add a watch eSIM directly. If you’re on prepaid, you’d need to switch to a postpaid plan first.
The Airtel Thanks app is installed on your iPhone. This is where the eSIM activation happens for most users. Make sure it’s updated to the latest version.
Your iPhone and Apple Watch are paired and nearby. The watch eSIM is set up through your iPhone. Both devices need to be close to each other during the process, with Bluetooth and Wi-Fi turned on.
Your Airtel account credentials. Your registered mobile number and the ability to receive an OTP on your Airtel SIM.
Activate eSIM on Apple Watch Airtel
To activate eSIM on Apple Watch Airtel, ensure that your Apple Watch model is compatible and that you are subscribed to an Airtel postpaid plan. Begin by updating the Airtel Thanks app to the latest version, which will guide you through the activation process. Most users find that they can complete the setup in less than 30 minutes, allowing for seamless connectivity while enjoying the convenience of an independent device. Consider the trade-offs, including limited app availability and battery performance, to determine if this solution aligns with your lifestyle.
How Airtel’s Apple Watch eSIM Plan Works
Airtel offers what it calls a “paired plan” for Apple Watch. Your watch shares the same number as your iPhone — calls and messages come in on both. You’re not getting a separate number for the watch.
The plan is typically a monthly add-on charged on top of your existing postpaid bill. The cost has been in the range of ₹199–₹299 per month, depending on your base plan and any promotional offers Airtel is running at the time. This gives your watch cellular access — calls, data, and iMessage — whenever you’re away from your iPhone.
It’s worth knowing that the watch uses data from its own small cellular connection when away from your phone, but it shares your iPhone’s number and plan identity. Think of it as an extension of your existing Airtel connection, not a separate one.
Step-by-Step: How to Activate eSIM on Apple Watch via Airtel
Here’s the process that works for most users in India:
Step 1: Open the Apple Watch App on your iPhone
Go to your iPhone, open the Watch app, and tap on your watch at the top of the screen. Scroll down and look for Cellular. Tap on it.
Step 2: Tap “Set Up Cellular”
If your watch doesn’t have a cellular plan yet, you’ll see a Set Up Cellular button. Tap it. Your iPhone will look for available carrier options.
Step 3: Select Airtel
Your iPhone should detect Airtel as your carrier and display it as an option. Tap Airtel to continue. If it doesn’t appear automatically, make sure your Airtel SIM is inserted properly and that your account is active.
Step 4: You’ll Be Redirected to the Airtel Thanks App
The Watch app will redirect you to the Airtel Thanks app to complete the activation. If you don’t have it installed, download it first from the App Store.
Step 5: Log In and Verify Your Number
Inside the Airtel Thanks app, log in with your Airtel credentials. Verify your identity via the OTP sent to your registered number.
Step 6: Select the Watch eSIM Plan
Once verified, the app will show you available plans for Apple Watch. Select the monthly add-on that fits your postpaid plan. Review the pricing and confirm.
Step 7: Complete Payment and Wait for Activation
After confirming the plan, Airtel processes the request. Activation typically takes between a few minutes and a couple of hours. You’ll get an SMS confirmation once it’s done.
Step 8: Check Cellular Status on Your Watch
Once activated, open the Watch app on your iPhone, go to Cellular, and you should see your Airtel plan listed as active. On the watch itself, swipe up to open the Control Centre — you’ll see a green cellular indicator when connected to Airtel’s network.
Testing It Out: Going Phone-Free
Once your eSIM is active, here’s how to test it properly:
Leave your iPhone at home or in another room (turned on, but away from you). Walk outside with just your Apple Watch. Open the Phone app on the watch and call someone. If the call connects and they can hear you clearly, your cellular connection is working.
You can also check by opening the watch’s Control Centre — if the cellular icon is green and there’s no Wi-Fi icon active, your watch is running entirely on Airtel’s network.
Practical example: A fitness trainer in Pune uses her Apple Watch Ultra on Airtel cellular every morning during outdoor bootcamp sessions. She leaves her iPhone at the gym reception, takes calls from clients mid-session, and uses the GPS + cellular combo to track her route — all without carrying her phone. Her Airtel postpaid plan adds ₹249/month for the watch plan, which she considers a fair trade for the freedom.
What Works When You’re Away from Your iPhone
When your Apple Watch is connected to Airtel via eSIM and your iPhone is out of range, here’s what you can do:
- Make and receive calls — using the watch’s built-in speaker and microphone, or connected Bluetooth earphones
- Send and receive iMessages and SMS — through the Messages app on the watch
- Stream Apple Music — if you have an Apple Music subscription (requires downloading music to the watch or streaming via cellular)
- Use Apple Maps for navigation — turn-by-turn directions work independently
- Receive notifications — app alerts, calendar reminders, fitness goals
- Use Siri — for voice commands, reminders, and quick questions
- Emergency SOS — calls emergency services even without your iPhone nearby
What doesn’t work as smoothly without your iPhone:
- Third-party apps that haven’t been optimised for independent watch use
- WhatsApp calls and messages (WhatsApp does not have a standalone Apple Watch app)
- Some banking or authentication apps that require your phone
Common Problems and How to Fix Them
Problem: Airtel doesn’t appear as a carrier option during setup
Make sure your Airtel SIM is inserted and working on your iPhone. Restart both devices and try again. If the issue persists, call Airtel customer care (121) and ask them to check whether your account is eligible for the watch eSIM add-on. Some older postpaid plans may need to be updated.
Problem: Activation is stuck or shows “pending”
This sometimes happens during high-traffic periods. Wait 2–3 hours and check again. If it’s been more than 24 hours, contact Airtel support and provide your plan order reference number.
Problem: Watch shows no cellular signal even after activation
Go to the Watch app → Cellular → check if your Airtel plan is listed. If it shows as inactive, tap it and follow any prompts. Also check that your watch’s software is up to date (Watch app → General → Software Update).
Problem: Calls are dropping, other voice quality is poor
This is usually a signal strength issue rather than an eSIM problem. Check Airtel’s coverage in your area. The watch’s antenna is smaller than a phone’s, so it may show a weaker signal in areas where your phone had decent coverage.
Problem: You’re being charged, but the plan isn’t working
Call Airtel customer care immediately at 121 or visit an Airtel store with your account details. Keep your activation confirmation SMS as a reference.
Pros and Cons of Using Airtel eSIM on Apple Watch
Pros:
- True independence from your iPhone — workouts, errands, and commutes without carrying your phone
- Same number as your iPhone — no confusion for people calling you; one number rings both devices
- Emergency access always on — even if you forget your phone, you can still call for help
- Clean experience during fitness activities — no phone bouncing in a pocket or armband
- Works with Apple Maps and Siri independently — useful for navigation runs or cycling
- Easy to pause or cancel — Airtel lets you manage the add-on through the Thanks app
Cons:
- Only available on Airtel postpaid — prepaid users are left out for now
- Monthly add-on cost adds up — ₹200–₹300/month is meaningful over a year
- WhatsApp doesn’t work independently — a significant limitation for many Indian users who rely on it for daily communication
- Watch battery drains faster on cellular — expect shorter battery life when connected to Airtel’s network vs. relying on your phone’s Bluetooth
- Requires a cellular Apple Watch model — the cheaper GPS-only variants don’t support this
- Setup can be finicky — some users need multiple attempts or a call to Airtel support to get activation right
Is It Worth the Monthly Cost?
That depends on how you actually use your watch.
It’s worth it if:
- You exercise outdoors regularly and want to be reachable without carrying your phone
- You commute using public transport and prefer travelling light
- You work in environments where carrying a phone is inconvenient or restricted
- You have children or elderly family members who might need to reach you quickly
- You already use your Apple Watch heavily and just want to remove the phone tether
It’s probably not worth it if:
- You rarely leave your phone behind
- WhatsApp is your primary way of communicating,g and you rely on it constantly
- You’re already stretching your monthly mobile budget
- Your Apple Watch is mostly used for fitness tracking at home or at the, y m, where your phone is anyway
Quick Summary Table
| Feature | Details |
|---|---|
| Supported watch models | Apple Watch Series 4+ (Cellular), SE 2nd gen (Cellular), Ultra, Ultra 2 |
| Airtel plan type required | Postpaid only |
| Activation method | Airtel Thanks app via Watch app |
| Monthly cost | ~₹199–₹299/month (add-on) |
| Watch number | Same as iPhone (mirrored) |
| WhatsApp support | Not available independently |
| Activation time | Minutes to a few hours |
| Customer support | 121 (Airtel) or nearest Airtel store |
Frequently Asked Questions
Q: Can I use Airtel eSIM on an Apple Watch if I have a prepaid connection?
Currently, Airtel’s Apple Watch eSIM plan is only available for postpaid customers. If you’re on prepaid, you’d need to switch to a postpaid plan to access this feature.
Q: Will my Apple Watch get a separate number from Airtel?
No. The watch mirrors your existing iPhone number. When someone calls your Airtel number, both your iPhone and Apple Watch ring simultaneously. You don’t need a separate number.
Q: Does the Airtel watch plan use data from my existing plan?
The watch gets its own small cellular data allocation when away from your iPhone. It’s not pulling from your iPhone’s data balance directly — it’s a separate connection on Airtel’s network using the add-on plan.
Q: Can I use WhatsApp on Apple Watch with Airtel cellular?
WhatsApp does not have a standalone Apple Watch app, so you cannot use it independently on the watch, even with cellular activated. You can still receive notifications when your iPhone is nearby.
Q: How do I cancel the Airtel watch eSIM plan?
You can manage and cancel the plan through the Airtel Thanks app under your account’s add-on services. You can also call 121 or visit an Airtel store to cancel.
Q: Does using cellular on the Apple Watch drain the battery faster?
Yes, noticeably. When connected to Airtel via cellular (away from your iPhone), expect battery life to be roughly 4–6 hours, depending on your usage. With Bluetooth connected to your iPhone, the watch battery lasts much longer. This is a hardware reality, not an Airtel-specific issue.
Q: What happens if I change my Airtel postpaid plan? Do I need to reactivate the watch eSIM?
In most cases, the watch eSIM plan continues as an add-on to whatever base postpaid plan you’re on. However, it’s worth checking with Airtel customer care when changing plans to confirm the add-on transfers correctly.
Q: Can I use the eSIM on Apple Watch abroad with Airtel international roaming?
Airtel’s international roaming typically covers the watch plan in countries where the roaming agreement extends to connected devices. Check with Airtel before travelling internationally to confirm whether your watch plan will work in your destination country.
Q: My setup keeps failing at the Airtel Thanks app stage. What should I do?
Try uninstalling and reinstalling the Airtel Thanks app, then restart both your iPhone and Apple Watch. If it still fails, call Airtel at 121 and ask them to manually verify your account eligibility for the watch eSIM add-on. Sometimes accounts need a backend flag enabled before the app process works.
Conclsion
Setting up Airtel eSIM on your Apple Watch is genuinely useful if you live an active lifestyle or simply want the freedom to step away from your phone without going completely off the grid. The setup process is straightforward once your account is eligible, and the experience of having your watch work independently is hard to go back from.
The main limitations — no WhatsApp, postpaid only, faster battery drain — are real and worth thinking about before committing to the monthly add-on. But if you exercise outdoors, travel light, or just want one less device to carry, the Airtel watch plan does exactly what it promises.