Latest Yahoo! Japan 4 user agents:

User Agent Platform Device
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.5.1 YJApp-IOS jp.co.yahoo.ipn.appli/4.165.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 18_6_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/18.6.2 YJApp-IOS jp.co.yahoo.ipn.appli/4.166.0 iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.5.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.163.5 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.3.1 YJApp-IOS jp.co.yahoo.ipn.appli/4.165.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/18.5.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.156.0 iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_16 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 YJApp-IOS jp.co.yahoo.ipn.appli/4.106.0 iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 YJApp-IOS jp.co.yahoo.ipn.appli/4.127.0 iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 15_8_8 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 YJApp-IOS jp.co.yahoo.ipn.appli/4.91.0 iOS 15 iPhone
Mozilla/5.0 (iPad; CPU OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.5.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.165.0 iPadOS 26 iPad
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 YJApp-IOS jp.co.yahoo.ipn.appli/4.106.0 iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_16 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/16.7.16 YJApp-IOS jp.co.yahoo.ipn.appli/4.165.0 iOS 16 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.5.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.165.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 YJApp-IOS jp.co.yahoo.ipn.appli/4.116.0 iOS 18 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.3.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.164.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_4_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.4.2 YJApp-IOS jp.co.yahoo.ipn.appli/4.163.5 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.3.1 YJApp-IOS jp.co.yahoo.ipn.appli/4.162.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_4_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.4.2 YJApp-IOS jp.co.yahoo.ipn.appli/4.162.0 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.3.1 YJApp-IOS jp.co.yahoo.ipn.appli/4.161.5 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/26.3.0 YJApp-IOS jp.co.yahoo.ipn.appli/4.161.5 iOS 26 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Version/18.3.1 YJApp-IOS jp.co.yahoo.ipn.appli/4.160.0 iOS 18 iPhone