Product Highlights
GPS/ Wifi/ LBS/ A-GPS/ ACC
Emergency Contacts
No contract - SIM card choice
Voice & Video Call
Chatting with Family
770mAh Battery
LAGENIO K3 4G Kids Smart Watch
The LAGENIO K3 4G Kids Smart Watch is made for families looking for a simple, safe, and fun first watch phone for kids. With 4G voice and video calls, family chat, GPS location support, SOS emergency help, and parent-managed contacts through the LAGENIO app, K3 helps children stay connected while giving parents more peace of mind during school days, outdoor play, and daily routines. Kids will love the changeable housing design that lets them switch up the look, while parents can feel more confident with class mode, unknown call blocking, no social media apps, and no forced contract.
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Spare Accessories:
SIM Card Compatibility
LAGENIO K3, K9 and K10 kids smart watches use a physical 4G Nano SIM card. For the best experience, choose a mobile plan that includes both 4G mobile data and voice calling.
SIM compatibility can vary by watch model, carrier and mobile plan. Please check the carrier information for your specific LAGENIO model below.
Use a physical Nano SIM card. eSIM is not supported on these models.
Choose a plan with both 4G mobile data and voice calling. Data-only SIM cards are not recommended.
Whenever possible, choose a SIM issued directly by a major local mobile carrier.
Some mobile providers sell their own SIM cards and plans while using another carrier's network. These are often called third-party mobile providers or MVNOs.
For example, a SIM from another company may say that it "uses the EE network", "runs on the T-Mobile network" or "uses Vodafone coverage". This does not mean that the SIM was issued directly by EE, T-Mobile or Vodafone.
Although these SIMs may use the same underlying mobile network, compatibility can vary. For the most reliable experience, we recommend purchasing a SIM directly from a major carrier whenever possible.
Some third-party providers have already been used successfully with LAGENIO and are listed by name in the compatibility tables below. If your exact provider is not listed, please check with us first.
The SIM is issued directly by the carrier — for example, an EE SIM from EE, a Vodafone SIM from Vodafone, or a T-Mobile SIM from T-Mobile.
The SIM is from another company that says it uses EE, Vodafone, T-Mobile or another carrier's network.
LAGENIO K3 and K9 U.S. versions come with a SpeedTalk SIM card pre-inserted in the watch for your convenience.
This is part of the standard configuration of the U.S. version and does not mean that your watch is used, returned, refurbished or previously owned.
The included SpeedTalk SIM is not active when you receive the watch. It must be activated before it can be used for mobile data and cellular voice calling.
Activation is completely optional. If you choose to activate the included SpeedTalk SIM, the plan costs $15.99 per month.
You are not required to activate or use SpeedTalk. You may remove the included SIM and use another compatible physical Nano SIM instead.
Follow the video below to activate the included SpeedTalk SIM:
Check SIM Compatibility by Watch Model
Please select your watch model before choosing a SIM. Carrier compatibility may differ between LAGENIO models, so a carrier listed for one model should not automatically be assumed to have the same compatibility with another model.
LAGENIO K3 & K10 Compatible SIM Carriers
The following carrier information is based on our current testing, customer usage and shipment records for the K3/K10 platform.
Where possible, we recommend purchasing the SIM directly from one of the listed carriers rather than using an unverified third-party provider that only uses the same network.
Swipe left or right to view the full table.
| Country / Market | Compatible SIM Carriers |
|---|---|
| Bulgaria | A1, Yettel, Vivacom |
| Czech Republic | O2, T-Mobile, Vodafone |
| France | Orange, SFR, Bouygues Telecom, Free Mobile |
| Germany | O2 / Telefónica, Telekom, Vodafone |
| Greece | Vodafone, COSMOTE, Nova |
| Italy | TIM, Vodafone, Iliad, WINDTRE, Fastweb, PosteMobile |
| Poland | Plus, T-Mobile, Orange, Play |
| Romania | Vodafone, Telekom, Orange |
| Spain | Vodafone, Movistar, Orange, Simyo, Jazztel, Telecable, Digi, Finetwork, Euskaltel |
| Thailand | AIS |
| Turkey | Türk Telekom, Vodafone, Turkcell |
| United Kingdom | EE, O2 |
| United States | K3: SpeedTalk, T-Mobile, AT&T K10 is currently not sold in the United States. |
| Vietnam | Viettel, MobiFone, VinaPhone, Vietnamobile, Gmobile, REDDI, I-Telecom |
LAGENIO K9 Compatible SIM Carriers
The following carrier information is based on our current testing, customer usage and shipment records for the K9 platform.
Please use this K9 list when choosing a SIM for your K9 rather than assuming that every carrier listed for K3/K10 has the same compatibility.
Swipe left or right to view the full table.
| Country / Market | Compatible SIM Carriers |
|---|---|
| France | Orange, SFR, Bouygues Telecom, Free Mobile |
| Germany | Telekom, O2 / Telefónica, Vodafone |
| Italy | TIM, Vodafone, Iliad, WINDTRE, Fastweb, PosteMobile |
| Lithuania | Telia, Tele2, Bite |
| Moldova | Orange, Moldcell |
| Poland | Plus, Orange |
| Romania | Vodafone, Telekom, Orange |
| Russia | MTS, Beeline, MegaFon, Tele2 |
| South Africa | MTN, Vodacom, Cell C, Telkom SA |
| Spain | Orange, Movistar, Vodafone |
| Thailand | AIS, True, DTAC |
| Turkey | Türk Telekom, Vodafone, Turkcell |
| United Arab Emirates (Dubai) | du, Etisalat |
| United Kingdom | EE, O2 |
| United States | SpeedTalk, T-Mobile, AT&T |
| Vietnam | Viettel, MobiFone, VinaPhone, Vietnamobile, Gmobile, REDDI, I-Telecom |
A country not listed above does not mean that LAGENIO cannot be used there. LAGENIO watches are compatible with many mainstream local 4G SIM cards in countries around the world.
If we have not listed a specific tested carrier for your country, we recommend choosing a major local mobile carrier and purchasing a physical Nano SIM directly from that carrier. The plan should include both 4G mobile data and voice calling.
For the most reliable compatibility, we recommend avoiding unverified third-party or virtual mobile providers (MVNOs), even if they advertise that they use the network of a major carrier.
How Do I Know Who Actually Issued My SIM?
Check the provider name shown on your SIM card, SIM packaging, order confirmation or mobile account.
For example, if your SIM is branded "Provider A", but Provider A says that it "uses the EE network", your SIM is issued by Provider A — not directly by EE.
If Provider A itself appears in the compatibility table for your watch model, you may use it. If it is not listed, please do not assume it is compatible simply because it uses the network of a carrier shown above.
Send us your country, LAGENIO watch model and exact SIM provider name, and we can help you check the most suitable option.
If your SIM provider says it uses another carrier's network, please send us the actual SIM provider name — not only the network name.
Contact LAGENIO SupportIf you have any further questions, please contact us at watch@lagenio.com.
User Manual & Download
Estimated Delivery: 4–6 Business Days
30-day Returns & Free Shipping
1-Year Warranty
Professional Team Service
Product Highlights
GPS/ Wifi/ LBS/ A-GPS/ ACC
Emergency Contacts
No contract - SIM card choice
Voice & Video Call
Chatting with Family
770mAh Battery
LAGENIO K3 4G Kids Smart Watch
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Estimated delivery time: 3-5 days within the EU Shipping is not available to the United States and Latin American regions.
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Guarantee
Free shipping & 1 Year warranty & 30-day Return&Refund & Lifetime customer service.
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FAQ’s
Click here to view the frequently asked questions about the product and the user manual.
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Customer Support
We have a professional team to serve you. If you have any questions, please contact us at any time. Contact Us
One watch, Two styles
The watch comes with a replaceable kit that allows kids to replace it by themselves.
& Quick Emergency Calls
Precise GPS Tracking & Zone Alerts
Track your child in real time using GPS, Wi-Fi, and more across 200+ countries. With Zone Alerts, you’ll know quickly if they enter an unfamiliar area, helping every adventure stay safe and sound.
Splash Ready, Adventure Steady!
The ultimate adventure buddy that's waterproof, tough, and smart! If your little explorer ventures into new zones, you'll get instant alerts. It continuously monitors their health for added peace of mind. Plus, they can challenge friends with the built-in stopwatch, making every outing a fun-filled adventure!
Smart Connections & Safe Tracking
Easily add friends nearby with a quick search and stay connected. Friends chat is backed by advanced positioning tech, including GPS, Wi-Fi, and motion-assisted tracking, ensuring accurate real-time updates. Parents stay in control with app-based monitoring, managing their child's friend list for extra peace of mind.
Multiple functions to meet children's needs
- Free APP, no social APP software.
- Free choice of operator, no internet browsing window.
- Parents manage their children’s friends and address books through the APP, and no unfamiliar contacts can disturb them.
- Free operators available
Support 98% of global operators.
| Size | 51.2 x 42.8 x 15.5mm |
| Color | Blue+Black Pink+Purple |
| Display | 1.7"inch 240x280 pixels |
| Memory | ROM:128MB RAM:64MB |
| Sensor | Accelerometer |
| Positioning | GPS/WiFi/LBS/A-GPS/Accelerometer positioning |
| Battery | 770mAh |
| Camera | 0.3MP |
| System | RTOS |
FAQs
Please read our FAQs page to find out more.
Q: How secure is my child's data?
A: Lagenio prioritizes data security and privacy. We use encrypted servers, GDPR-compliant standards, and no third-party data sharing, ensuring your child's information remains protected.
Q: Can strangers contact my child on their Lagenio watch?
A: No. Only pre-approved contacts added through the Lagenio Parent App can call or message your child, keeping communication safe and controlled.
Q: Is there a way to limit screen time?
A: Yes! Our School Mode feature disables distractions like calls and games during class hours, ensuring kids stay focused while still allowing emergency communication.
Q: What is your return policy?
A: We offer a 30-day hassle-free return policy. If you’re not satisfied, you can return the watch in its original condition for a full refund.
Q: Does my watch come with a warranty?
A: Yes! All Lagenio smartwatches come with a 1-year limited warranty, covering manufacturing defects.
Q: Do I have to purchase a LAGENIO Sim card plan and contract?
A: We do not force users to purchase specific sim card plan and contract. We support 4 mode and 10+ bands, let watch phone call and positioning in 200 mainstream countries and regions unimpeded.
You can choose Telekom, telefonica, Vodafone, TIM, Iliad, Orange, SFR, O2, Free mobile, T-mobile and more carriers.