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Apple’s in-house 5G modem with mmWave support is the C2, and it arrived with the iPhone 18 Pro generation on September 9, 2026. Apple’s specifications list mmWave support for certain configurations, but availability varies by region and exact model.
Which Apple modem supports mmWave?
The modem is Apple’s C2. Apple’s iPhone 18 Pro technical specifications identify the C2 cellular modem and list 5G NR mmWave bands n258, n260, and n261 for the configurations covered by that page.
That is a specification listing, not a guarantee that every iPhone 18 Pro sold worldwide includes mmWave. MacRumors’ September 9, 2026 launch coverage reports that Apple’s U.S. specifications list mmWave, while its U.K. specifications list sub-6 GHz only. Check the specifications for your exact model and country before buying.
How is C2 different from Apple’s earlier modems?
Earlier Apple-designed modems did not provide the mmWave support reported for C2. TELETIME News describes the C1 in iPhone 16e and C1X in iPhone Air as predecessors without mmWave. Apple had supported mmWave in some earlier U.S. iPhones, but those phones used externally supplied modems; C2 is the first Apple in-house modem generation in this account to add it.
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- Multi-Band 5G NR / LTE Support: The SIM8230G-M2 supports multiple frequency bands, enabling 5G NR, LTE-FDD, and LTE-TDD connectivity with a download speed of up to 220Mbps in 5G Standalone (SA) mode.
- High Expandability: This module comes with a wide range of interfaces, including USB 2.0 and GPIO, offering extensive expandability and making it easy to integrate into various customer applications.
- Flexible Network Protocol Support: The SIM8230G-M2 supports multiple network protocols, ensuring versatility and making it suitable for diverse applications that require reliable data communication.
- M.2 Form Factor and AT Command Compatibility: With its M.2 form factor, the SIM8230G-M2 is compatible with AT commands from SIM7600, SIM8200, and SIM8260 series modules, enabling a smooth upgrade path and minimizing customer investment.
- Ideal for Diverse Applications: Designed for efficient and reliable data communication across different radio propagation conditions, the SIM8230G-M2 offers an ideal combination of performance, security, and flexibility for various industrial and commercial uses.
Does C2’s mmWave support matter to everyday use?
It matters if you use a compatible regional model where your carrier has mmWave coverage. The technology can offer high capacity over shorter distances, but obstacles impede its reach and networks generally require denser deployment. A compatible phone alone does not mean mmWave service will be available where you use it.
For the iPhone 18 Pro launch, Apple also claimed that C2 uses 15 percent less energy than C1X and provides faster uploads. Those are company-reported comparisons covered by MacRumors, not independent test results established here.
Rank #2
- PCIe TO 4G/5G M.2 and USB 3.2 HAT+ is a PCIe to USB3.2/M.2 adapter board designed for Raspberry Pi 5, is compatible with 5G modules in 3042/3052 size, supports Gen2 mode and high-speed communication
- for Raspberry Pi 5: HAT+ standard design with onboard I2C. Onboard PCIe interface for directly connecting to Raspberry Pi 5 via 16PIN cable
- More USB Capability For Raspberry Pi 5: Extends The PCIe Interface To 3x High Speed USB 3.2 Gen1 Ports For Connecting More Peripherals
- Compatible With Multiple 4G/5G modules with M.2 Key B interface: Onboard M.2(NGFF) Key B slot, supports SIM7600XX-M.2, SIM82XX and RM5XX series 4G/5G modules and is compatible with 3042/3052 packages
- Supports systems such as Raspberry Pi OS, Ubuntu, OpenWRT, etc
What about earlier predictions for C2?
A July 6, 2026 9to5Mac roadmap report described C2 as expected in the iPhone 18 Pro generation. That was a forecast; Apple’s September launch and current specifications establish that the modem has since arrived.
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Best Value
- WiFi6 (802.11ax) Enhancement: OFDMA and DL MU-MUMI technologies provide a more stable and high-speed wireless transmission channel, synchronously scheduling multiple users to send and receive in parallel, reducing network latency and improving network utilization efficiency.
- 8 Antenna Router: The traditional external antenna design is similar to the appearance of a typical router. The number of antennas can reach up to 8 (4*4G+4*5G). The black appearance is more understated.
- 5G Cellular Network Access: No need for external network cables, providing excellent 5G network access capability. Supports the true 5G standard of all network communication, and can access the gigabit internet by simply inserting a SIM card.
- More Space Flow & Capacity: Dual frequency 4 spatial streams with a bandwidth of up to 1800Mbps, allowing you to enjoy UHD streaming videos and real-time online games without worry. Simultaneously providing more access capabilities for mobile terminals to meet the rich access needs of future smart homes.
- Seamless Roaming Under Mixed Backhaul: You can freely choose the MESH networking mode through wired and wireless backhaul to meet the simple deployment in various indoor scenarios. Simultaneously, seamless roaming function ensures a more stable wireless connection while on the go.
Rank #4
- Part Number: SIM8262E-M2 5G HAT
- SIM8262E-M2 5G HAT for Raspberry Pi, quad antennas 5G NSA, multi-band, 5G/4G/3G
- Based on Qualcomm platform, support 5G NSA and SA networking, support multi-mode & multi-band
- Multi-constellation dual-band positioning: GPS, Beidou, Glonass, Galileo, and QZSS
- USB 3.1 port (USB 2.0 compatible) for connecting to PC, Raspberry Pi, or Jetson Nano host board to enable high speed 5G communication
Rank #3
- Standard 40PIN GPIO extension header, supports direct attaching to Jetson Nano
- 5G/4G/3G communication, supports functions like phone call, SMS, cloud communication, etc.
- USB3.1 port for testing AT commands, sending messages, cloud communication, making phone call, getting GNSS positioning data, etc.
- SIM card slot, supports 1.8V / 3V SIM card. 2x LED indicators, easy to monitor the working status. AT command support, based on 3GPP TS 27.007, 27.005 and V.25TER command set
- Onboard audio jack and audio decoder, allows audio operation like making phone call. Multi-constellation dual-band positioning: GPS, GLONASS, Beidou, Galileo, and QZSS. Operating system support: Windows/Linux/Android
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