Can you add cellular to Apple Watch after purchase?
No you cannot. This option is only available if you purchase the (GPS + Cellular) version of the Apple Watch. GPS only version does not support cellular functions. You can answer and receive voice and text alerts.
You can also set up cellular later from the Apple Watch app: On your iPhone, open the Apple Watch app. Tap the My Watch tab, then tap Cellular. Tap Set Up Cellular.
Is it worth having cellular on Apple Watch? Yes, it is definitely worth having a cellular Apple Watch. But, it comes down to your preferences. If you plan to use it with your Wi-Fi and your iPhone, the GPS version is the right choice for you.
You may use a cellular model in GPS only mode, and activate the cellular at a later date if you so desire. To activate the cellular radio, you have to contact your iPhone cellular provider and have it added to your iPhone plan.
It is an addition to your iPhone plan. The Apple Watch shares the iPhone's phone number. This requires that the iPhone cellular carrier support the Apple Watch. For this phone number sharing service, the iPhone cellular carrier will charge a monthly fee.
Once you have accessed the "Mobile Data" tab, choose the option "Add a Plan." This will display a catalog of carriers that endorse eSIM on Apple Watch. Simply select the carrier of your choice that you would like to use for your eSIM plan.
Apple Watch (GPS + Cellular) has an eSIM (embedded SIM) in it so there's no need to get a SIM card or transfer the SIM from another device. When you pair your Apple Watch to your iPhone, you will be prompted to set up cellular service and guided through a few simple steps.
With Apple Watch with cellular and a cellular connection to the same carrier used by your iPhone, you can make calls, reply to messages, use Walkie-Talkie, stream music and podcasts, receive notifications, and more, even when you don't have your iPhone or a Wi-Fi connection.
The Main Differences
The main difference between the Apple Watch GPS and the cellular model is the ability to connect to a network. The cellular model allows you a direct connection without having your phone present. This even supports using the GPS on your Apple Watch without requiring your phone.
With Apple Watch with cellular and an activated cellular plan, you can stay connected even when away from your iPhone.
What happens if an Apple Watch doesn't have cellular?
Cellular is not required to make or take calls or send or receive messages. However, you will need either the paired iPhone nearby, or if the iPhone is not nearby, a Wifi connection for the watch, and for the paired iPhone to be on, and have a cellular data connection or wifi available as well.
Yes, it can - subject to your Apple Watch and/or iPhone having the required connectivity.

There is a $10/month charge for the service to be added to your plan.
Optus eSIM
Compatible devices include the Apple Watch GPS+ Cellular and Samsung Galaxy Watch (Cellular), and iPhones running iOS 11 or higher. This service is a month-to-month add-on, and priced at $5 per month.
What devices support eSIM? Apple's iPhone 14 and iPhone 14 Pro are its first eSIM-only phones, at least in the US, following dual SIM support from the iPhone XS onwards. It also uses eSIM in the iPad Pro and every Apple Watch since the Series 2.
The eSIM feature on Apple Watch allows users to activate a cellular plan on their watch without a physical SIM card. This feature is available on Apple Watch Series 3 or later models running watchOS 7 or later.
No there is no extra to pay once you've bought the watch,the only extra cost you might incur is for a cellular plan if you have the cellular version of the watch.
A major difference between GPS and Cellular Watch is based on their connectivity. The GPS + Cellular will let you leave your iPhone at home while still being able to make and answer calls, send text messages and stay connected with just your smartwatch. This is the GPS-only watch can't do it.
On your new iPhone, go to Settings > Cellular > Add Cellular Plan. Choose a cellular plan to transfer from another iPhone. If you don't see a list of numbers, tap Transfer From Another iPhone.
Apple Watch pairs to your iPhone using Bluetooth, but can use Wifi if there is a network that the watch and the phone can connect to. If the software needs to be updated on your Apple Watch during setup, then your iPhone will require access to Wi-Fi.
How far can Apple Watch be from iPhone?
What to Know. Bluetooth on the Apple Watch has a maximum range of 100 meters/330 feet, though the range may be shorter in practice. If the paired iPhone is connected to a known Wi-Fi network, the Apple Watch and iPhone can communicate over Wi-Fi.
Normal Bluetooth range is around 33 feet / 10 meters, but this will vary in practice due to wireless interference. Whenever your watch can't connect to the iPhone, it will attempt, as a fallback, to connect to a known, compatible Wi-Fi network.
When you add music to your Apple Watch, you can listen to it wherever you go, even when you don't have your iPhone with you. You can add specific playlists and albums to your Apple Watch using the Apple Watch app on your iPhone.
No. The Apple Watch shares the iPhone's phone number. Verizon charges $10 per month for this sharing.
Enjoy the freedom of staying connected hands-free by adding your Apple Watch to your Verizon plan. Pick up a new Apple Watch and check out Verizon's connected device plans today.
It's normally $20 to add a watch if you don't already have a phone on your account, though it will now costs $10 per month per watch for all standalone plans. Pricing for subscribers who have both a phone and a watch on their accounts is unchanged.
Bluetooth on the Apple Watch has a maximum range of 100 meters/330 feet, though the range may be shorter in practice. If the paired iPhone is connected to a known Wi-Fi network, the Apple Watch and iPhone can communicate over Wi-Fi.
Do I have to add another line if I get an Apple Watch? Apple Watch neither needs nor supports using a separate phone number / cellular plan for the watch. The full range of features is available when Apple Watch and iPhone are connected. Whenever possible, the devices will connect via Bluetooth.
No, you do not have to activate cellular service. Without cellular service, it will work like the GPS model. What's the difference between Apple Watch GPS and Apple Watch GPS + Cellular? The main difference is the presence, or absence, of cellular connectivity.
Normal Bluetooth range is around 33 feet / 10 meters, but this will vary in practice due to wireless interference. Whenever your watch can't connect to the iPhone, it will attempt, as a fallback, to connect to a known, compatible Wi-Fi network.
Can I leave my iPhone at home and use my Apple Watch?
When your iPhone is off or out of range, your Apple Watch can use a Wi-Fi network to send and receive data. Your watch can also connect to a cellular network if it's a cellular model. And if you've set up an Apple Watch for a family member, they can use a cellular or Wi-Fi connection with their watch.
With your Apple Watch connected to Wi-Fi, you can make calls, send text messages, stream music and podcasts, keep up with weather and stock updates, use the Walkie-Talkie feature, and enjoy a variety of other functions — all without your phone present.
When you use Find My: Apple Watch with GPS and cellular can use GPS and a trusted Wi-Fi or cellular connection to show you its approximate location. Apple Watch with GPS can use GPS and a trusted Wi-Fi connection to show its approximate location.
Most carriers charge $10/month for an Apple Watch cellular plan. If you need multiple Apple Watch cellular plans, consider Family Setup to save money.
No. The Apple Watch shares the iPhone's phone number.
A connected device plan allows you to add a smartwatch, tablet, mobile hotspot or other devices to your plan and provide it with its own individual data connection. This can be part of your Unlimited Mix and Match plan, as an additional, low-cost line of data specifically for your Apple Watch.
Cellular is not required to make or take calls or send or receive messages. However, you will need either the paired iPhone nearby, or if the iPhone is not nearby, a Wifi connection for the watch, and for the paired iPhone to be on, and have a cellular data connection or wifi available as well.
It can take up to 24 hours to activate, but sometimes it might take a little longer. To check if your new Airtime Plan is active, open the Watch app on your iPhone and tap on 'Mobile Data'.
Make a call
Open the Phone app on your Apple Watch. Tap Contacts, then turn the Digital Crown to scroll. Tap the contact you want to call, then tap the phone button. Tap FaceTime Audio to start a FaceTime audio call, or tap a phone number.
Apple Watch is so capable you'll want to wear it all day long. So we made sure we gave it a battery that lasts all day, too. Our goal for battery life is 18 hours after an overnight charge, factoring in things like checking the time, receiving notifications, using apps, and doing a 60-minute workout.