Looks like iPhone 17 series mobile phones with the
Apple N1 wireless networking chip still do not support 320 MHz channel bandwidth on the 6GHz band.
But the speed seems to be better than iPhone 16 series. It could be now 4096 QAM is supported, increasing the max PHY speed to 2882 Mbps (iPhone 16 series do not support 4096 QAM, only 1024 QAM).
Need to wait for Apple to update the following website. Now it only has WiFi spec data until iPhone 16 series.
https://support.apple.com/en-sg/guide/deployment/dep268652e6c/web
Wi-Fi specification details for iPhone models
Wi-Fi specifications for the following iPhone models are detailed in the table below: iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max. These models also support Wi-Fi 7 in the 2.4 GHz, 5 GHz and 6 GHz bands, and Multi-Link Operation (MLO).
| 802.11 standard, name, frequency | Maximum PHY data rate | Maximum channel bandwidth | Maximum MCS index | Maximum spatial streams / Type |
|---|
| be@6 GHz | 2400 Mbps | 160MHz | 11 (EHT) | 2/MIMO |
| be@5 GHz | 2400 Mbps | 160MHz | 11 (EHT) | 2/MIMO |
| be@2.4 GHz | 229 Mbps | 20MHz | 9 (EHT) | 2/MIMO |
| ax@6 GHz | 2400 Mbps | 160MHz | 11 (HE) | 2/MIMO |
| ax@5GHz | 2400 Mbps | 160MHz | 11 (HE) | 2/MIMO |
| ac@5GHz | 866 Mbps | 80MHz | 9 (VHT) | 2/MIMO |
| a/n@5GHz | 300 Mbps | 40MHz | 7 (HT) | 2/MIMO |
| ax@2.4GHz | 229 Mbps | 20MHz | 9 (HE) | 2/MIMO |
| b/g/n@2.4GHz | 144 Mbps | 20MHz | 7 (HT) | 2/MIMO |