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iOS 26.5 Update, 3-Day Review on iPhone 17 and 16A detailed review of using iOS 26.5 on iPhone 17 and iPhone 16 for three days. We deeply analyze various aspects such as battery performance, heat, overall performance, storage bugs, and network connectivity to help you decide whether to update.
1. 🔋 iOS 26.5 Battery Performance Analysis
· For the iPhone 17, after three days of use, 21% of the battery remained, but it was actually charged to 20% extra. With a total of 36 hours of use, approximately 7 hours and 30 minutes of screen-on time was achieved, which is an improvement compared to previous updates. Despite using the Adaptive Power Mode, an idle drain of 6-7% was observed, especially during nighttime hours. Considering battery consumption due to summer heat, it's a generally satisfactory battery backup.
· The iPhone 16 showed better battery performance than the iPhone 17, with approximately 7 hours and 30 minutes of screen-on time over 36 hours of use. This could be due to differences in usage environments, such as the 120Hz display, call usage, and mobile data usage. The iPhone 16 did not use Adaptive Power Mode and demonstrated better battery efficiency than the iPhone 17.
· The iPhone 16 showed better battery performance than the iPhone 17, with approximately 7 hours and 30 minutes of screen-on time over 36 hours of use. This could be due to differences in usage environments, such as the 120Hz display, call usage, and mobile data usage. The iPhone 16 did not use Adaptive Power Mode and demonstrated better battery efficiency than the iPhone 17.
00:00 - 01:48
1. 🔋 iOS 26.5 Battery Performance Analysis
· For the iPhone 17, after three days of use, 21% of the battery remained, but it was actually charged to 20% extra. With a total of 36 hours of use, approximately 7 hours and 30 minutes of screen-on time was achieved, which is an improvement compared to previous updates. Despite using the Adaptive Power Mode, an idle drain of 6-7% was observed, especially during nighttime hours. Considering battery consumption due to summer heat, it's a generally satisfactory battery backup.
· The iPhone 16 showed better battery performance than the iPhone 17, with approximately 7 hours and 30 minutes of screen-on time over 36 hours of use. This could be due to differences in usage environments, such as the 120Hz display, call usage, and mobile data usage. The iPhone 16 did not use Adaptive Power Mode and demonstrated better battery efficiency than the iPhone 17.
· The iPhone 16 showed better battery performance than the iPhone 17, with approximately 7 hours and 30 minutes of screen-on time over 36 hours of use. This could be due to differences in usage environments, such as the 120Hz display, call usage, and mobile data usage. The iPhone 16 did not use Adaptive Power Mode and demonstrated better battery efficiency than the iPhone 17.
04:10 - 04:45
2. 🌡️ iOS 26.5 Heat Issues
· When used indoors and in air-conditioned environments, both the iPhone 17 and iPhone 16 did not experience any significant heat issues. This also had a positive impact on battery performance.
· However, heat can occur when used outdoors under direct sunlight or in hot environments for extended periods. Especially in high-temperature environments in summer (e.g., 40-45°C), heat may intensify depending on usage. In normal usage environments, there were no major problems.
· However, heat can occur when used outdoors under direct sunlight or in hot environments for extended periods. Especially in high-temperature environments in summer (e.g., 40-45°C), heat may intensify depending on usage. In normal usage environments, there were no major problems.
04:46 - 06:01
3. 🚀 iOS 26.5 Performance and Benchmark Results
· For the iPhone 17, single-core performance remained consistent, but a slight decrease was observed in multi-core performance. This might be related to improved battery efficiency. GPU performance exceeded 38,000 points, maintaining a similar level to previous updates.
· The iPhone 16 showed a slight decrease in both single-core and multi-core performance compared to previous updates but generally maintained consistent performance. GPU performance also slightly increased.
· Despite minor fluctuations in numbers, in actual use, we experienced smooth performance without any lag or stuttering during tasks like editing and multitasking.
· The iPhone 16 showed a slight decrease in both single-core and multi-core performance compared to previous updates but generally maintained consistent performance. GPU performance also slightly increased.
· Despite minor fluctuations in numbers, in actual use, we experienced smooth performance without any lag or stuttering during tasks like editing and multitasking.
06:02 - 06:34
4. 💽 iOS 26.5 Storage Space and System Data
· No storage bugs were found in this update; instead, 4-5GB of storage space was freed up compared to the previous version.
· However, the system data size continued to increase. System data occupied a significant amount of space, exceeding 12GB on the iPhone 16 and 22GB on the iPhone 17. We hope this aspect will be improved through future software updates.
· However, the system data size continued to increase. System data occupied a significant amount of space, exceeding 12GB on the iPhone 16 and 22GB on the iPhone 17. We hope this aspect will be improved through future software updates.
06:35 - 07:25
5. 🐞 iOS 26.5 Bugs and Stability
· Overall, no serious bugs were found across the system, including the keyboard, notifications, and network.
· Intermittent errors or app crashes may occur in some apps (e.g., Instagram, editing apps), but this might be due to the need for app updates rather than an issue with iOS itself. It is recommended to update to the latest version from the App Store.
· Specifically, some stuttering was felt in the wallpaper section, but it showed improvement compared to the previous version.
· Intermittent errors or app crashes may occur in some apps (e.g., Instagram, editing apps), but this might be due to the need for app updates rather than an issue with iOS itself. It is recommended to update to the latest version from the App Store.
· Specifically, some stuttering was felt in the wallpaper section, but it showed improvement compared to the previous version.
07:26 - 08:14
6. 📶 iOS 26.5 Network and Connectivity
· Stable performance was observed in all network connections, including calls, mobile data, Wi-Fi, and Bluetooth. No call drops or signal issues occurred.
· Wi-Fi connection was immediate with no latency. Connections with Bluetooth devices like AirPods and Apple Watch were also smooth.
· The AirDrop function also worked stably, with most of the issues that occurred in previous updates being resolved.
· Wi-Fi connection was immediate with no latency. Connections with Bluetooth devices like AirPods and Apple Watch were also smooth.
· The AirDrop function also worked stably, with most of the issues that occurred in previous updates being resolved.
08:15 - 09:34
7. 🤔 iOS 26.5 Update Recommendation
· Overall, iOS 26.5 is a stable update in all aspects, including battery, network, and performance. No serious bugs or issues were found.
· If you are experiencing problems with battery, heat, or network on your current iOS version, we strongly recommend updating to iOS 26.5.
· However, if you were already satisfied with the performance on the previous version (e.g., iOS 26.4.1, 26.4), you might not need to update necessarily, as there are almost no new features added.
· This update focuses on security patches and bug fixes, making it a good choice for users seeking a stable version.
· If you are experiencing problems with battery, heat, or network on your current iOS version, we strongly recommend updating to iOS 26.5.
· However, if you were already satisfied with the performance on the previous version (e.g., iOS 26.4.1, 26.4), you might not need to update necessarily, as there are almost no new features added.
· This update focuses on security patches and bug fixes, making it a good choice for users seeking a stable version.