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Galaxy S26 Battery and Heating Performance: A Full Comparison Analysis with iPhone 17!The results of an in-depth comparison of battery life and heat performance for the latest smartphones, including the Galaxy S26 series, iPhone 17, and previous models, have been released. Through tests conducted in various environments, from YouTube 4K viewing to high-performance gaming, the actual usage efficiency and heat control capabilities of each model can be thoroughly examined. Which smartphone will demonstrate the best battery efficiency and stable heat management?
1. 🔋 Battery Test Overview and Conditions
· Battery tests lasting over 20 hours were conducted on a total of 13 devices, including the Galaxy S26 series (Standard, Plus, Ultra), S25, Fold/Flip series, and iPhone 17 series (Pro Max, Standard, Air).
· The S26 Standard model's battery capacity increased by 300mAh compared to its predecessor, but the Plus and Ultra models remain the same as their predecessors.
· Tests were performed with all devices charged to 100%, display at maximum brightness, 120Hz refresh rate, Wi-Fi on, and airplane mode enabled.
· Battery levels and heat were checked after 2 hours each of low-power tasks like video viewing and SNS, and 1 hour each of video recording and high-performance gaming.
· The S26 Standard model's battery capacity increased by 300mAh compared to its predecessor, but the Plus and Ultra models remain the same as their predecessors.
· Tests were performed with all devices charged to 100%, display at maximum brightness, 120Hz refresh rate, Wi-Fi on, and airplane mode enabled.
· Battery levels and heat were checked after 2 hours each of low-power tasks like video viewing and SNS, and 1 hour each of video recording and high-performance gaming.
| Category | Battery Capacity (mAh) |
|---|---|
| Tri-Fold | 5,600 (Largest) |
| iPhone Air | 3,149 (Smallest) |
| S26 Standard | 300mAh increase compared to previous model |
| S26 Plus/Ultra | Same as previous model |
00:00 - 00:54
1. 🔋 Battery Test Overview and Conditions
· Battery tests lasting over 20 hours were conducted on a total of 13 devices, including the Galaxy S26 series (Standard, Plus, Ultra), S25, Fold/Flip series, and iPhone 17 series (Pro Max, Standard, Air).
· The S26 Standard model's battery capacity increased by 300mAh compared to its predecessor, but the Plus and Ultra models remain the same as their predecessors.
· Tests were performed with all devices charged to 100%, display at maximum brightness, 120Hz refresh rate, Wi-Fi on, and airplane mode enabled.
· Battery levels and heat were checked after 2 hours each of low-power tasks like video viewing and SNS, and 1 hour each of video recording and high-performance gaming.
· The S26 Standard model's battery capacity increased by 300mAh compared to its predecessor, but the Plus and Ultra models remain the same as their predecessors.
· Tests were performed with all devices charged to 100%, display at maximum brightness, 120Hz refresh rate, Wi-Fi on, and airplane mode enabled.
· Battery levels and heat were checked after 2 hours each of low-power tasks like video viewing and SNS, and 1 hour each of video recording and high-performance gaming.
| Category | Battery Capacity (mAh) |
|---|---|
| Tri-Fold | 5,600 (Largest) |
| iPhone Air | 3,149 (Smallest) |
| S26 Standard | 300mAh increase compared to previous model |
| S26 Plus/Ultra | Same as previous model |
00:55 - 03:04
2. 🎬 Battery Consumption Comparison by Usage Scenario
· YouTube 4K Video Playback (2 hours): The iPhone 17 Pro Max showed the best efficiency with 7% consumption, followed by the S25 Ultra, S26 Plus, and S26 Ultra. The Tri-Fold recorded 16% consumption due to its screen size and power consumption. The S26 Plus was 3% ahead of its predecessor.
· Instagram Reels Playback (2 hours): In an environment with frequent screen transitions and network processing, the S26 Standard and S26 Ultra showed the lowest consumption at 10%. Overall, the S26 series ranked high, while the iPhone 17 Pro Max dropped in ranking. The iPhone Air consumed the most battery.
· 4K 60fps Video Recording (1 hour): The iPhone 17 Standard showed the best efficiency with 15% consumption, while the iPhone Air's battery drained the fastest at 24% consumption. The S26 series showed no significant difference from its predecessor.
· Instagram Reels Playback (2 hours): In an environment with frequent screen transitions and network processing, the S26 Standard and S26 Ultra showed the lowest consumption at 10%. Overall, the S26 series ranked high, while the iPhone 17 Pro Max dropped in ranking. The iPhone Air consumed the most battery.
· 4K 60fps Video Recording (1 hour): The iPhone 17 Standard showed the best efficiency with 15% consumption, while the iPhone Air's battery drained the fastest at 24% consumption. The S26 series showed no significant difference from its predecessor.
| Test Item | Best Efficiency Model | Worst Efficiency Model |
|---|---|---|
| YouTube 4K Playback (2 hours) | iPhone 17 Pro Max (7% consumption) | Tri-Fold (16% consumption) |
| Instagram Reels (2 hours) | S26 Standard, S26 Ultra (10% consumption) | iPhone Air (Highest consumption) |
| 4K 60fps Video Recording (1 hour) | iPhone 17 Standard (15% consumption) | iPhone Air (24% consumption) |
03:05 - 04:22
3. 🎮 High-Performance Gaming and Final Battery Drain Time
· 3DMark Gaming Test (1 hour): The Flip 7 consumed the least at 21%, which is attributed to strong performance throttling reducing power usage. The iPhone 17 Standard and Air consumed over 30%.
· Final Battery Drain Time: Continuing the 3DMark test until all products drained, the S26 Plus took first place with 7 hours and 36 minutes. The S26 Ultra, Flip 7, S25 Ultra, and iPhone 17 Pro Max followed with slight differences. The differences among the top models can be considered minor ranking variations.
· The iPhone Air completely drained in 6 hours and 39 minutes, turning off the fastest. This model is not recommended if battery life is a priority.
· Final Battery Drain Time: Continuing the 3DMark test until all products drained, the S26 Plus took first place with 7 hours and 36 minutes. The S26 Ultra, Flip 7, S25 Ultra, and iPhone 17 Pro Max followed with slight differences. The differences among the top models can be considered minor ranking variations.
· The iPhone Air completely drained in 6 hours and 39 minutes, turning off the fastest. This model is not recommended if battery life is a priority.
| Rank | Model | Drain Time |
|---|---|---|
| 1st | S26 Plus | 7 hours 36 minutes |
| 2nd | S26 Ultra | Slight difference |
| 3rd | Flip 7 | Slight difference |
| 4th | S25 Ultra | Slight difference |
| 5th | iPhone 17 Pro Max | Slight difference |
| Last Place | iPhone Air | 6 hours 39 minutes |
04:23 - 05:32
4. 🌡️ Heat Comparison Results
· At the start of the test, most products were at temperatures of 24-25 degrees Celsius.
· For light tasks like YouTube viewing or Instagram Reels, most stayed in the late 20s to early 30s, with no significant perceived difference.
· 4K Video Recording: The Flip 7 reached the highest temperature at 44 degrees Celsius. This appears to be largely influenced by its thin structure and internal space constraints.
· High-Performance Gaming Environment: All products exceeded 40 degrees Celsius, with the Fold 7 and iPhone Air reaching the highest at 44 degrees Celsius. The iPhone 17 Pro Max maintained a relatively stable temperature in the early 40s.
· Although the S26 series is known to have improved heat dissipation structures compared to its predecessor, this test did not show a significant enough difference to be noticeable. In particular, the S26 Standard model measured 5 degrees higher than its predecessor during recording. However, it's possible that optimization has not yet been completed as it's still early in its usage.
· For light tasks like YouTube viewing or Instagram Reels, most stayed in the late 20s to early 30s, with no significant perceived difference.
· 4K Video Recording: The Flip 7 reached the highest temperature at 44 degrees Celsius. This appears to be largely influenced by its thin structure and internal space constraints.
· High-Performance Gaming Environment: All products exceeded 40 degrees Celsius, with the Fold 7 and iPhone Air reaching the highest at 44 degrees Celsius. The iPhone 17 Pro Max maintained a relatively stable temperature in the early 40s.
· Although the S26 series is known to have improved heat dissipation structures compared to its predecessor, this test did not show a significant enough difference to be noticeable. In particular, the S26 Standard model measured 5 degrees higher than its predecessor during recording. However, it's possible that optimization has not yet been completed as it's still early in its usage.
| Test Item | Highest Heat Model | Temperature |
|---|---|---|
| 4K Video Recording | Flip 7 | 44°C |
| High-Performance Gaming | Fold 7, iPhone Air | 44°C |
| High-Performance Gaming | iPhone 17 Pro Max | Early 40s (Relatively stable) |