Live Translate button missing on iPhone 17 Pro

• Where are you attempting to use it, Messages, with AirPods, FaceTime, Phone app?
• What is your devices Region set to and the Language you are using.

Note: Live Translation in Messages is available in English, Danish, Dutch, French, German, Italian, Norwegian, Portuguese, Spanish, Swedish, Turkish, Chinese (Simplified), Chinese (Traditional), Japanese, Korean, and Vietnamese.

Translate messages, calls, and conversations on iPhone - Apple Support

• Apple Intelligence features are not available in devices manufactured for China distribution or those that have China set as their region. If the model number of your phone ends in "CH/A", then it is a phone manufactured for China.
• Have you downloaded the language you want to use for Live Translation? Additional information about the use of Live Translation is available here.

Translate messages, calls, and conversations on iPhone - Apple Support