Top Smartwatches With SIM And Wi-Fi Connectivity In 2025

Looking for a smartwatch that keeps you connected without needing your phone? Here are some of the top smartwatches in 2025 that come with built-in SIM and Wi-Fi support to stay online anytime, anywhere.

Smart watches
Best Smartwatches

The thought of a smart watch doing more than just telling time is no longer surprising. Today’s smartwatches are stepping up big time, especially those with SIM and Wi-Fi connectivity. They let you make calls, stream music, reply to messages, or track your health—even when your phone’s left behind. That’s a real game-changer. In 2025, there’s no shortage of options if you’re hunting for the best smartwatch with SIM and Wi-Fi. Brands are focusing not just on features, but also on comfort, battery life, and affordability. Whether you're chasing fitness goals, staying connected at work, or just want a gadget that keeps up with your lifestyle, there’s something out there for you. This guide walks you through some of the best smartwatches available right now. We’ll look at what makes them worth the money, how they perform, and what kind of smart watch price tags they carry.

Top Smartwatches with SIM and Wi-Fi Connectivity

In 2025, smart watches have pushed the limits of what a wrist device can do. Among the best smartwatches you can get right now are models that work just fine without being attached to your phone. All of these options come with both SIM and Wi-Fi capabilities, so you’re always in touch, no matter where you are. From premium to mid-range, there's a smart watch price point for everyone. Whether you care more about design, battery life, or fitness tracking, one of these smart watches is likely your perfect match.

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Top Five Products

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    Fire-Boltt Snapp Smart Watch, Selfie Camera, 4G Nano-SIM Slot, 54.1mm AMOLED Display, Play Store- Unlimited apps, 1000mAh Battery, 2GB/4GB RAM + 16GB/64GB ROM (Cherry Blush)

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    This fire boltt snapp smart watch has a 4G nano-SIM slot, offering reliable connectivity on the go and enjoy seamless internet access, calls, and messages without needing your phone. Enjoy vibrant colors and crisp details for an enhanced viewing experience with a 54.1mm AMOLED display and a sharp 410*502 pixels resolution. This smart watch is perfect for watching videos, browsing apps, and reading notifications, its power through your day with a robust 1000mAh battery, offering long-lasting performance and enjoy extended usage without frequent recharging, perfect for busy lifestyles with all that you can ditch cameras with this Fire-Bolt watch, and offers Stream live, capture photos/videos, and scan QR codes.

    Specifications

    • Brand: ‎Fire-Boltt
    • Series: Snapp
    • Colour: ‎Cherry Blush
    • Operating System: Android
    • Memory Storage Capacity: 16 GB
    • Special Feature: Selfie Camera, Simcard Watch, 2.13" AMOLED Display, 410*502 Pixel High Resolution, Built-In Mic & Speaker, and more
    • Battery Capacity: 1000 Milliamp Hours
    • Connectivity: Bluetooth, Cellular, Wi-Fi

    Pros

    • 1000mAh battery
    • 54.1mm AMOLED display
    • 4G nano-SIM slot

    Cons

    • Build quality could be better
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    Titan Smart 3 Premium Smart Watch|1.96" Super AMOLED Display with 410x502 Pixel Resolution|SingleSync BT Calling|NitroFast Charging|110+ Sports Modes|200+ Watchfaces|Upto 7 Days Battery (Copper)

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    This Titan Smart watch comes with a 1.96" Super AMOLED Display with Always On Display and is ready to style your wrist with bright pixel resolution for a sharper experience and brand new amazing colours. It's SingleSync BT Calling with Favourite Contacts storage and Quick Replies, also offers NitroFast Charging with 10 10-minute charges to fuel up 1 day of battery. Provides advanced 110+ Sports Modes, 200+ Watchfaces, In Built Games, AI Voice Assistant and many more handy features at a single tap, with this Titan smartwatch feature Health Monitoring with Auto Stress monitor, 24x7 Heart Rate, Sleep Tracker, Spo2 and Women's Health‎. This smartwatch offers advanced features like Multisport Tracker, Activity Tracker, Phone Call, Stress Tracking, Heart Rate Monitor, as this is one of the best smartwatches under 5000.

    Specifications

    • Brand: Titan
    • Model Name: ‎Titan Smart 3
    • Operating System: Android
    • Special Feature: Multisport Tracker, Activity Tracker, Phone Call, Stress Tracking, Heart Rate Monitor
    • Battery Capacity: 280
    • Connectivity: Bluetooth

    Pros

    • AI Voice Assistant
    • SingleSync BT Calling
    • Advanced 110+ Sports Modes

    Cons

    • Connectivity is not up to the mark
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    Fire-Boltt Snapp Smart Watch, Selfie Camera, 4G Nano-SIM Slot, 54.1mm AMOLED Display, Play Store- Unlimited apps, 1000mAh Battery, 2GB/4GB RAM + 16GB/64GB ROM (Archaic Black)

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    This fire boltt snapp smart watch has a 4G nano-SIM slot, offering reliable connectivity on the go and enjoy seamless internet access, calls, and messages without needing your phone. Enjoy vibrant colors and crisp details for an enhanced viewing experience with a 54.1mm AMOLED display and a sharp 410*502 pixels resolution. This smart watch is perfect for watching videos, browsing apps, and reading notifications, its power through your day with a robust 1000mAh battery, offering long-lasting performance and enjoy extended usage without frequent recharging, perfect for busy lifestyles with all that you can ditch cameras with this Fire-Bolt watch, and offers Stream live, capture photos/videos, and scan QR codes.

    Specifications

    • Brand: ‎Fire-Boltt
    • Series: Snapp
    • Colour: ‎‎Archaic Black
    • Operating System: Android
    • Memory Storage Capacity: 16 GB
    • Special Feature: Selfie Camera, Simcard Watch, 2.13" AMOLED Display, 410*502 Pixel High Resolution, Built-In Mic & Speaker, and more
    • Battery Capacity: 1000 Milliamp Hours
    • Connectivity: Cellular, Bluetooth, Wi-Fi

    Pros

    • 1000mAh battery
    • 54.1mm AMOLED display
    • Unlimited Play Store apps

    Cons

    • Built quality could be better
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    Fastrack New Astor FS1 PRO Smart Watch, Large Super AMOLED Display (1.97") AOD, AI Voice Assistance, Functional Crown, SingleSync BT Calling, 100+ Sports Modes & Smartwatch Faces, IP68 (Black)

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    This Fastrack smartwatch has with 1.97 AMOLED display Working Crown, and a bright Pixel Resolution and Adaptive AOD. Enjoy a faster and smoother navigation like never before with 60 Hz Refresh Rate; Superior Connectivity with Advanced Chipset and SingleSync BT Calling with Favourite Contacts storage and Quick Replies. This is one of the best smartwatch under 5000 you can consider. Its advanced features include NitroFast Charging, AI Voice Assistance, Advanced 100+ Cloud Watchfaces, Multisport, Up to 5-day battery, and SOS Calling. Comes with IP68 Water Resistance and many more handy features at a single tap; Health Monitoring with Stress monitor, 24x7 HRM, SPO2, Women's Health.

    Specifications

    • Brand: ‎Fastrack
    • Model Name: ‎Astor FS1 PRO
    • Operating System: Android
    • Memory Storage Capacity: 16 GB
    • Special Feature: Multisport Tracker, Activity Tracker, Phone Call, Stress Tracking, Heart Rate Monitor
    • Battery Capacity: 128 MB
    • Connectivity: Bluetooth

    Pros

    • IP68 Water Resistance
    • Up to 5 day battery
    • 60 Hz Refresh Rate

    Cons

    • Mixed opinions on the battery life
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    Fire-Boltt 4G Pro Volte Calling Smart Watch- 2.02 TFT Display, 4G Nano-SIM GPS, Health Suite, Sports Modes, 400mAh Battery (Black)

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    This Fire Boltt smartwatch comes with seamless voice calls from a 4G nano-SIM network right from your wrist and enjoy clear communication without any distractions. With its GPS functionality tracks your effortlessly with its built-in GPS feature, ensuring precise location tracking for outdoor activities like running and other activities, enhancing performance. Immerse yourself in vivid visuals and intuitive touch controls on the spacious 2.02” HD display. Enjoy crisp clarity with a resolution of 240*296, bringing every detail to life at your fingertips. This smartwatch offers multiple sports modes from running and cycling to yoga and swimming, easily tracks and optimises your performance across a variety of exercise routines. Stay motivated and achieve your goals with precision and style.

    Specifications

    • Brand: ‎Fire-Boltt
    • Model Name: ‎Four G
    • Colour: ‎‎Archaic Black
    • Operating System: Android
    • Memory Storage Capacity: 128 MB
    • Special Feature: Support triple network 4G full Netcom, Support dynamic heart rate monitoring, Red light blood oxygen monitoring, and more
    • Battery Capacity: 4e+2 Milliamp Hours
    • Connectivity: Cellular

    Pros

    • Health monitoring
    • IP67 water resistant
    • Offers GPS functionality

    Cons

    • Different views on functionality
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Key Features to Consider in SIM and Wi-Fi Smart Watches 

When you're shopping for a smartwatch, here are some features that make a difference:

  • SIM and Wi-Fi: Having both lets you make calls, send messages, or use apps without needing your phone nearby.
  • Battery Life: Look for one that can easily last the longest, or more, especially if you’re out and about a lot.
  • Health Tracking Tools: Most of the best smart watches now monitor your heart rate, sleep patterns, and even advanced features.
  • Built-in GPS: Great for tracking runs, rides, or walks without carrying your phone.
  • App Support: It’s helpful if the watch works well with the apps you already use on your phone.
  • Durability: A water-resistant design and solid build mean you won’t worry about rain or splashes.
  • Display Quality: A bright, clear screen is easier to read outdoors or in sunlight.
  • Performance: You’ll want something that responds quickly and doesn’t lag when switching between apps.

Read More: Right Smartwatch for Your Budget

Disclaimer: At HerZindagi, we prioritize providing the up-to-date information on the latest trending commodities and goods. This Article is written and vetted by our in-house category authors in sync with the Google guidelines on product reviews and shoppable content. HerZindagi is in an associate partnership, so we may earn a part of the revenue when you make a purchase. We shall not be liable for any claim under applicable laws, including but not limited to the Consumer Protection Act, 2019, concerning the products. The products listed in this article are in no particular order of priority.

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Faq's

  • Which is the best smart watch with SIM and Wi-Fi?
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    Top picks include the Fastrack and Fire Boltt, both offering strong performance and seamless connectivity. They're excellent choices for anyone seeking a reliable smart watch for men or women.
  • Can I make calls and use the internet on these smartwatches without my phone?
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    Yes, if the watch supports 4G SIM and Wi-Fi, you can call, text, and browse without needing a phone nearby.
  • Are there stylish options in smartwatches with SIM and Wi-Fi for women?
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    Absolutely. You can find Fastrack and Fire Boltt models offer sleek designs and smart features, making them perfect as a smart watch for women.