Do Smartwatches Need a SIM Card? Everything You Need to Know Before Buying

Keep your health in check with the latest smartwatches. Attend to important calls without the need to keep your mobile phone handy.
By: Hotdeals360 Staff Updated: Oct 06, 2026 11:00 IST
These smartwatches comes with integrated SIM feature and lets you attend phone calls conveniently.

Imagine you are out for a morning run or heading to the gym and want to leave your smartphone at home. What feels missing is the need to attend some of the important calls that creates a panic situation. However, what if we told you that you can do so with ultimate ease at the convenience of your smartwatch? Sounds interesting, right? Now, with the new modern smartwatches, you can seamlessly attend calls and listen to your favourite music on the go while tracking your calories. 

One of the common doubts that you might face is whether you require a SIM card to make your smartwatch operate like a cellphone. With modern watches available in the market, you get multiple multitasking features. These watches not only function as a mere watch but also let you perform multiple tasks at the same time. Most of the first time buyers worry that they might need a separate cellular plan; however, you do not require any of these formalities. These smartwatches work effortlessly when paired with your smartphone and do not require any additional setup to attend to calls or react to WhatsApp notifications. Explore some of the top choices from the article. 

Explore more Deals on Flipkart.

Standalone Cellular vs. Bluetooth Calling: How Smartwatch Connectivity Really Works

Understanding whether you need a SIM card for your smartwatch depends on multiple features of your watch. While some of the watches allow you to connect via an eSIM feature, some can be connected seamlessly with Bluetooth. It all depends on what features and specifications you require. 

  • Bluetooth-Only Smartwatches: Some of the watches include a Bluetooth-only feature that does not require a SIM card. They connect directly with your mobile phone using Bluetooth technology. 
  • Cellular / LTE Smartwatches: These watches use the eSIM method to connect to your mobile network connection. This assigns your phone number to your wrist via multi-SIM number-sharing plans. 
  • Battery and Price Trade-Offs: Due to cellular usage. Your smartwatch might tend to drain battery faster than usual. To avoid that, you can turn on the LTE feature only as and when needed. 

Samsung Galaxy Watch8 (40mm, LTE) 

Samsung Galaxy Watch8 40mm, Lte

₹ 36,999
₹ 42,999 (14% off)
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If you are looking for a smartwatch for your daily runs and workout routine, this Samsung Galaxy Watch 8 is one of the best smartwatch choices for you. This watch provides you with an eSIM feature and lets you leave your mobile phone at home while going out for your personal time. This premium device is an ideal choice and lets you attend to important calls and respond to important text messages or those on WhatsApp with just one tap. Not only that, you can further play your favourite music while jogging, and it is powered by Wear OS. It further uses Samsung's advanced BioActive sensor that tracks ECG, risk of sleep apnea, body composition, and even heart rate with high precision. This functions as one of the best smartwatches for both Android and iPhone users. 

Specifications:

  • Colour: Grey
  • Water Resistance Depth: 50 Metres
  • Display Size: 40 mm
  • Display Resolution: 438 x 438 Pixels
  • Weight: 30 Grams 
  • Charge Time: 67 Minutes
  • Battery Life: 40 Hours 

Pros:

  • Value for money.
  • High-quality build and performance.
  • Uses an advanced BioActive sensor that measures health with high accuracy.
  • Consists of a bright Super AMOLED display with sapphire crystal glass. 

Cons:

  • Might require frequent charging. 

Apple Watch Series 10 GPS + Cellular 

Apple Watch Series 10 GPS + Cellular 42mm Jet Black Aluminium with Black Sport Band(Jet Black Strap, Free Size)

₹ 31,999
₹ 59,900 (47% off)
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The Apple Watch Series 10 is one of the top-rated smartwatch choices by iPhone users. Being one of the best smartwatches with eSIM integration, this watch comes with a sleek and aesthetic design. Not only that, but with an aerospace-grade aluminium chassis in Jet Black shade, it delivers timeless elegance. You can seamlessly wear it during your office meetings, travels, or even while jogging and working out. With the cellular option, you can use this watch for calling purposes or to respond to important texts without the need to use your mobile phone for the same purpose. Not only that, you can track your health and stream Apple Music simultaneously. This watch stands out as one of the best smartwatches and can be worn for any occasion.

Specifications:

  • Colour: Jet Black
  • Water Resistance Depth: 50 Metres
  • Display Size: 42 mm
  • Display Resolution: 416 x 496 Pixels
  • Weight: 35.3 Grams 
  • Battery Life: 18 Hours 

Pros:

  • Value for money.
  • High-quality build and performance.
  • Easy to perform multiple tasks at once. 
  • Has a sleek and aesthetic design.

Cons:

  • Locked strictly to the iOS ecosystem.

Fire-Boltt Hurricane Smartwatch 

Fire-Boltt Hurricane 1.3" Curved Glass Display with 360 Health Training, 100+ Sports Modes Smartwatch(Black Strap, Free Size)

₹ 1,399
₹ 8,999 (84% off)
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For those who are looking to buy a smartwatch that consists of both sports modes and a calling feature, this Fire Boltt smartwatch is an ideal choice for you. With budget pricing, this modern watch provides an aesthetic design and comes with high-end features. Not only that, you can start a conversation on a call using the watch while jogging or working out without the need to reach out to your smartphone. You also do not require a SIM or eSIM feature and can be seamlessly paired with Bluetooth. This lets you dial numbers and even access contacts with the ease of your watch, and it comes with a built-in microphone and speaker. This watch is ideal for daily office use. However, it is important to keep your mobile phone in range to use this calling feature. Overall, it is an ideal choice to opt for. 

Specifications:

  • Colour: Black
  • Water Resistance Depth: 1 Metre
  • Display Size: 1.3-inch
  • Display Resolution: 240 x 240 Pixels
  • Weight: 36 Grams 
  • Charge Time: 2 Hours
  • Battery Life: Up To 7 Days 

Pros:

  • Value for money.
  • Tracks daily fitness with over 100 sports modes. 
  • Long battery life compared to other models. 
  • High-end features at an affordable budget. 

Cons:

  • Lacks standalone GPS tracking. 

boAt Chrome Eon Smartwatch 

Boat Chrome Eon Smartwatch

₹ 3,999
₹ 9,999 (60% off)
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The boAt smartwatch combines a metallic aesthetic and ensures that you experience seamless connectivity without any interruption. Being one of the trusted brands among buyers, this smartwatch comes in an aesthetic design and is ideal for daily wear. You can link it via Bluetooth 5.3, and it routes calls smoothly through the integrated speaker. Not only that, it consists of a noise-reduction microphone and eliminates the requirement of taking out the phone from your pocket. The boAt Chrome Eon provides longer battery life and lasts several days without requiring frequent charges. Further, for fitness enthusiasts, this smartwatch can seamlessly track heart rate, daily steps, and workouts without any additional charges. This watch is one of the top-rated smartwatch brands and is an ideal choice to enhance daily productivity and smart notifications.

Specifications:

  • Colour: Active Black
  • Water Resistance Depth: 1 Metre
  • Display Size: 36.3 mm
  • Display Resolution: 466 x 466 Pixels
  • Display: AMOLED
  • Battery Life: 7 Days

Pros:

  • Value for money.
  • Premium metal-coated dial. 
  • Uses Bluetooth 5.3 for calling. 
  • Multiple health tracking modes. 

Cons:

  • Does not support third-party apps. 

boAt Storm Infinity Smartwatch 

Boat Storm Infinity, 21 Days Big Battery, Asap Charge, 1.96 Hd Display Smartwatch Smartwatch

₹ 1,499
₹ 5,999 (75% off)
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If you are looking for a budget smartwatch that provides longer battery life and comes with high-end features, this boAt Storm Infinity watch is an ideal choice for you. With up to 21 days of standby life, you can carry it on the go while trekking or travelling and track your activity on a single charge. Not only that, when it becomes difficult to take out your mobile phone to attend to important calls, you can seamlessly choose to take calls from this watch. Further, you can play your favourite music on the go. With multiple sports modes, this model eliminates any additional cost that might be required by your smartphone apps to track your health. Being a boAt model, it is one of the trusted choices by buyers and comes with a 1-year warranty, making it an ideal purchase decision. 

Specifications:

  • Colour: Brown
  • Water Resistance Depth: 1 Metre
  • Display Size: 46.4 mm
  • Display Resolution: 240 x 284 Pixels
  • Display Type: HD
  • Battery Life: 15 Days

Pros:

  • Easy to read with a wide display.
  • Multiple sports modes to choose from.
  • Massive battery life of up to 15 days. 
  • Can withstand heavy workouts and rain. 

Cons:

  • NA

Read More: Smart Ring Health Monitors for Women

Conclusion:

If you are deciding whether you should opt for a smartwatch with SIM functionality or one without it, it is an ideal choice to choose the one with the SIM feature. This is because, in case your phone's battery dies in the middle of an emergency situation, you can always use your watch in such cases. Not only that, while working out, you can avoid the hassle of constantly checking your mobile phone to see if you got any updates. Therefore, with multiple modern smartwatches available on Flipkart, it is an ideal choice to buy one for yourself. Also, check the required specifications and features before making your final choice. Take a moment ot evaluate how often you might require to use your watch and make the final purchase accordingly. 

Do Smartwatches Need a SIM Card? Everything You Need to Know Before Buying

Product Price in India
Samsung Galaxy Watch 8 (40mm) ₹ 36,999
Apple Watch Series 10 GPS + Cellular 42mm Jet Black Aluminium with Black Sport Band(Jet Black Strap, Free Size) ₹ 31,999
Fire-Boltt Hurricane 1.3" Curved Glass Display with 360 Health Training, 100+ Sports Modes Smartwatch(Black Strap, Free Size) ₹ 1,399
Boat Chrome Eon Smartwatch ₹ 3,999
boAt Storm Infinity ₹ 1,499
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