iPad Pro 12.9 (2021) comes with SIM and Wifi network.
          Product Details
          
  NETWORK
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Technology: GSM / CDMA / HSPA / EVDO / LTE / 5G
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2G Bands: GSM 850 / 900 / 1800 / 1900 | CDMA 800 / 1900
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3G Bands: HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | CDMA2000 1xEV-DO
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4G Bands: 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71 – A2379, A2461, A2462
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5G Bands: 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79, 260, 261 SA/NSA/Sub6/mmWave – A2379 | 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79 SA/NSA/Sub6 – A2461, A2462
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Speed: HSPA 42.2/5.76 Mbps, LTE-A, EV-DO Rev.A 3.1 Mbps, 5G
BODY
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Dimensions: 280.6 x 214.9 x 6.4 mm (11.05 x 8.46 x 0.25 in)
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Weight: 682 g (Wi-Fi), 685 g (5G) (1.50 lb)
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Build: Glass front, aluminum back, aluminum frame
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SIM: Nano-SIM, eSIM | Stylus support (Bluetooth integration; magnetic)
DISPLAY
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Type: Liquid Retina XDR mini-LED LCD, 120Hz, HDR10, Dolby Vision, 1000 nits (typ), 1600 nits (peak)
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Size: 12.9 inches, 515.3 cm2 (~85.4% screen-to-body ratio)
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Resolution: 2048 x 2732 pixels, 4:3 ratio (~265 ppi density)
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Protection: Scratch-resistant glass, oleophobic coating | Wide color gamut True-tone
PLATFORM
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OS: iPadOS 14.5.1
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Chipset: Apple M1
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CPU: Octa-core
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GPU: Apple GPU (8-core graphics)
MEMORY
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Card Slot: No
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Internal: 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM, 1TB 16GB RAM, 2TB 16GB RAM
MAIN CAMERA
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Triple: 12 MP, f/1.8, (wide), 1/3″, 1.22µm, dual pixel PDAF 10 MP, f/2.4, 125˚ (ultrawide) TOF 3D LiDAR scanner (depth)
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Features: Quad-LED dual-tone flash, HDR
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Video: 4K@24/25/30/60fps, 1080p@25/30/60/120/240fps; gyro-EIS
SELFIE CAMERA
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Single: 12 MP, f/2.4, 122˚ (ultrawide)
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Features: Face detection, HDR, panorama
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Video: 1080p@25/30/60fps, gyro-EIS
SOUND
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Loudspeaker: Yes, with stereo speakers (4 speakers)
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3.5mm Jack: No
COMMS
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WLAN: Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, hotspot
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Bluetooth: 5.0, A2DP, LE, EDR
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GPS: Yes, with A-GPS, GLONASS, GALILEO, QZSS (Wi‑Fi + Cellular model only)
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NFC: No
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Radio: No
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USB: USB Type-C 4 (Thunderbolt 4), DisplayPort; magnetic connector
FEATURES
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Sensors: Face ID, accelerometer, gyro, barometer | Siri natural language commands and dictation
BATTERY
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Type: Li-Po (40.88 Wh), non-removable
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Charging: Fast charging 18W