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iPhone Wi-Fi specification details
The following are iPhone Wi-Fi specification details.
Roaming optimization support for iPhone
All iPhone X or later models
Wi-Fi specifications for iPhone models
- 802.11 compatibility and frequency band: 802.11ax ( Wi-Fi 6), 802.11ac ( Wi-Fi 5), 802.11n ( Wi-Fi 4), 802.11a, 802.11b/g and 2.4 GHz or 5 GHz.
- Physical layer (PHY) data rate: The highest rate at which a client can transmit data over Wi-Fi .
- Channel bandwidth: The maximum channel bandwidth that is supported. Beginning with 802.11n, channels can be combined to create a wider channel that allows for more data to be transmitted during a single transmission. With 802.11n for 5 GHz band, two 20 MHz channels can be combined to create a 40 MHz channel. With 802.11ac for 5 GHz band, four 20 MHz channels can be combined to create an 80 MHz channel.
- MCS index: The Modulation and Coding Scheme (MCS) index defines the maximum transmission rate at which 802.11ac/n devices can communicate. 802.11ac uses Very High Throughput (VHT) and 802.11n uses High Throughput (HT) frames.
- Spatial streams/SISO/MIMO: Each radio can send a specific number of independent data streams, called spatial streams, at the same time, which can increase overall throughput. Single input single output (SISO) uses a single radio and antenna and multiple input multiple output (MIMO) uses multiple radios and antennas.
Wi-Fi specifications for iPhone 11 and later models
The table below details the Wi-Fi specifications for the iPhone 11 and later models listed in the above table.
802.11 standard, name, frequency
Maximum channel bandwidth