The cell data button only disables data, but the airplane button disables the cellular radio entirely and doesn’t disable WiFi or Bluetooth. If you want WiFi and BT disabled, you need to tap them separately.
However… the airplane button remembers your last preference. If you tapped airplane and then disabled WiFi and BT, it will disable them next time you turn on airplane mode. If you last used airplane mode with WiFi and/or BT enabled, it will only disable the cell antenna.
The cell data button only disables data, but the airplane button disables the cellular radio entirely and doesn’t disable WiFi or Bluetooth. If you want WiFi and BT disabled, you need to tap them separately.
However… the airplane button remembers your last preference. If you tapped airplane and then disabled WiFi and BT, it will disable them next time you turn on airplane mode. If you last used airplane mode with WiFi and/or BT enabled, it will only disable the cell antenna.