Latest Google Assistant 1 user agents:

User Agent Platform Device
Mozilla/5.0 (iPod touch; CPU OS 14.6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.26502 CoreAssistant/com.google.OPA iOS 14 iPod Touch
Mozilla/5.0 (iPhone; CPU OS 18.6.2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.148701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.148701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.136701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.4.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.136701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.3.2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.136701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.3.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.136701 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.1.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.73301 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 18.1.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU OS 17.6.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 17 iPhone
Mozilla/5.0 (iPhone; CPU OS 17.5.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 17 iPhone
Mozilla/5.0 (iPhone; CPU OS 17.4.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 17 iPhone
Mozilla/5.0 (iPhone; CPU OS 16.7.2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.101802 CoreAssistant/com.google.OPA iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU OS 16.7.10 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.136701 CoreAssistant/com.google.OPA iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU OS 16.7.10 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.131901 CoreAssistant/com.google.OPA iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU OS 16.7.10 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU OS 16.6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU OS 15.8 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iOS 15 iPhone
Mozilla/5.0 (iPhone; CPU OS 13.6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.80703 CoreAssistant/com.google.OPA iOS 13 iPhone
Mozilla/5.0 (iPad; CPU OS 18.1.1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GoogleWv/1.0 (WKWebView) OPA/1.9.115901 CoreAssistant/com.google.OPA iPadOS 18 iPad