eSIM facts
- OKActive eSIMs: Supported
- OKStored eSIMs: Varies by model
- OKSIM variants: eSIM
eSIM
Apple eSIM device guideApple Watch Ultra 3eSIM Support and Specs
Apple Watch Ultra 3 supports eSIM. Review Apple 5G compatibility, key device specs, SIM details, battery, display, camera and network bands for encryptSIM. Released 2025, September 19.
At a glance
Key device specs
- eSIM
- Ready for instant activation SIM
- Network
- GSM / HSPA / LTE / 5G 5G
- Display
- 1.98", 514x422 pixels DSP
- Chipset
- Apple S10 CPU
- Battery
- 599 mAh BAT
- Storage
- 64GB storage, no card slot GB
Does Apple Watch Ultra 3 support eSIM?
Apple Watch Ultra 3 is listed as an eSIM-capable device in the encryptSIM device catalog.
Bring eSIM support above the dense specification table so visitors can make a purchase decision quickly.
eSIM supported
Connectivity profile
- OKGSM / HSPA / LTE / 5G
- OKSA/NSA
- OKAvailable. Released 2025, September 19
Install flow
- OKConfirm device model and regional SIM variant.
- OKBuy an encryptSIM plan for the destination.
- OKScan the QR code and activate mobile data.
Device FAQ
Common questions about Apple Watch Ultra 3
Does Apple Watch Ultra 3 support eSIM?
Apple Watch Ultra 3 is listed as an eSIM-capable device in the encryptSIM device catalog. eSIM availability can still vary by region, carrier, firmware, and hardware variant.
Can I use encryptSIM with Apple Watch Ultra 3?
Yes. If your Apple Watch Ultra 3 model is unlocked and supports eSIM in your region, you can install an encryptSIM eSIM data plan on it.
Does Apple Watch Ultra 3 support 5G?
Apple Watch Ultra 3 is listed with 5G support. Actual 5G availability depends on the local network, plan, bands, and coverage.
What SIM setup does Apple Watch Ultra 3 use?
Apple Watch Ultra 3 SIM details: eSIM.
Which operating system does Apple Watch Ultra 3 use?
Apple Watch Ultra 3 is listed with watchOS 26, up to watchOS 26.4. Software updates and regional firmware can affect setup flows and carrier options.
Keep exploring
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Technical details
Detailed Apple Watch Ultra 3 specifications
5G
Network Architecture
- Technology
- GSM / HSPA / LTE / 5G
- 2g Bands
- GSM 850 / 900 / 1800 / 1900
- 3g Bands
- HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
- Other
- HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
- 4g Bands
- 1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK
- Other 2
- 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
- 5g Bands
- SA/NSA
- Speed
- HSPA, LTE, 5G
GO
Launch & Availability
- Announced
- 2025, September 09
- Status
- Available. Released 2025, September 19
MM
Physical Attributes
- Dimensions
- 49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in)
- Weight
- 61.6 g or 61.8 g (black) (2.15 oz)
- Build
- Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 5)
- Sim
- eSIM
- Other
- IP6X certified 100m water resistant (22810:2010) 40m swimproof/diving (EN13319) MIL-STD-810H compliant ECG certified (region dependent SW application; HW available on all models)
PX
Display Performance
- Type
- Retina LTPO3 OLED, 3000 nits (peak)
- Size
- 1.98 inches
- Resolution
- 514 x 422 pixels (~326 ppi density)
- Protection
- Sapphire crystal glass
- Other
- Wide-angle OLED
OS
Platform
- Os
- watchOS 26, upgradable to watchOS 26.4
- Chipset
- Apple S10
- Cpu
- Dual-core
- Gpu
- PowerVR
GB
Memory
- Card Slot
- No
- Internal
- 64GB
MP
Camera
- Other
- No
AU
Sound
- Loudspeaker
- Yes, with dual speakers (86-decibel)
- 3 5mm Jack
- No
RF
Connectivity
- Wlan
- Wi-Fi 802.11 b/g/n, dual-band
- Bluetooth
- 5.3, A2DP, LE
- Positioning
- GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
- Nfc
- Yes
- Radio
- No
- Usb
- No
FN
Features
- Sensors
- Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water)
- Other
- Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Ultra Wideband (UWB) support (gen2 chip) Emergency SOS via satellite
WH
Battery
- Type
- Li-Ion 599 mAh
- Charging
- Wireless, 0-80% in 45 min
ID
Misc
- Colors
- Natural, Black
- Models
- A3281, A3282
- Sar
- 1.16 W/kg (head)
- Sar Eu
- 1.19 W/kg (head)
- Price
- € 799.00