爱思助手为果粉带来iOS 26.3 Beta 测评结果，测试结果及建议仅供参考，具体还需以个人实际体验为准，升级前请做好数据备份，防止数据丢失。
一、性能测试
测试机型：iPhone 17 Pro
性能跑分：231万分
机身温控：最高41.5° 抖音35.3° 游戏37°
游戏性能：平均帧率118.2fps 延迟81.5ms
综合续航：2小时综合耗电32%
测试机型：iPhone 16 Pro
性能跑分：183万分
机身温控：最高47° 抖音38.8° 游戏42.6°
游戏性能：平均帧率118.8fps 延迟104.9ms
综合续航：2小时综合耗电41%
测试机型：iPhone 15 Pro Max
性能跑分：175万分
机身温控：最高49.6° 抖音41.3° 游戏45°
游戏性能：平均帧率118.1fps 延迟85.7ms
综合续航：2小时综合耗电42%
播放效果采用 DSD 2.4G 无损HIFI测试：
低音：iOS 18.2 beta3 > iOS 26.3 beta > iOS 26.1 RC > iOS 18.6 > iOS 18.5 = iOS 18.6 RC > iOS 18.5 RC
中音：iOS 18.2 beta3 = iOS 26.3 beta = iOS 26.1 RC = iOS 18.6 = iOS 18.6 RC = iOS 18.5 = iOS 18.5 RC
人声：iOS 18.2 beta3 = iOS 26.3 beta = iOS 18.6 > iOS 26.1 RC = iOS 18.6 RC = iOS 18.5 = iOS 18.5 RC
高音：iOS 18.2 beta3 = iOS 26.3 beta = iOS 26.1 RC = iOS 18.6 = iOS 18.6 RC = iOS 18.5 = iOS 18.5 RC
iOS 26.3 beta 版音质满足日常所需，低音澎湃、人声饱满，中高音圆润。
二、耗电详情：
iPhone 17：王者：10分钟2% 20分钟7% 抖音：4分钟1%
iPhone 16：王者：10分钟3% 20分钟9% 抖音：4分钟1%
iPhone 15：王者：10分钟3% 20分钟10% 抖音：4分钟1%
信号：常规环境信号几乎满格，网络正常，在地下车库，三大运行商稳定5G、2格信号。
温控：整体温度略有下降，但依旧偏烫。
游戏：帧率稳定118，延迟最低73ms，最高104.9ms。
杀后台：暂未杀后台。
爱思助手2小时使用下来最明显的感受是长时间使用机身较为烫手，iPhone 17 系列续航有所下降，iPhone 15 - iPhone 16 机型续航提升，部分用户存在第三方不兼容。
三、升级建议
测试版功能仅为研发测试用途，可能存在不完善问题，能否保留至正式版尚未确定，不可作为功能落地依据。此外，苹果客服方表示，不建议消费者使用主力机更新 iOS 测试版，因为存在系统不稳定、数据丢失风险，非必要场景勿升级，如需测试建议使用备用机。
爱思助手提示您升级有风险，升级前请做好备份，避免数据丢失。
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