Smartphone Battery Life Showdown | Who Lasts Longest?

Battery life is a quality that many consumers consider essential in today’s smartphone industry. What happens to flagship devices that have impressive displays and state-of-the-art processors when they are overworked? The Samsung Galaxy Z Fold 7, Apple iPhone 16 Pro Max, OnePlus Open, Google Pixel 9 Pro XL, and Samsung Galaxy S25 Ultra are the five high-end smartphones evaluated in a recent experiment to determine which one has the most extended battery life. The following chart displays the results, which provide some unexpected revelations.

The Contenders

Here’s a quick look at the smartphones tested:

• Samsung Galaxy Z Fold 7: A foldable powerhouse with a 4400mAh battery, Snapdragon 8 Elite chipset, and a high-resolution display with a 120Hz LTPO refresh rate. Its dual-screen design makes it a unique contender.
• Apple iPhone 16 Pro Max: Apple’s flagship, known for its seamless hardware-software integration, features a large battery and the latest A-series chip for top-notch efficiency.
• OnePlus Open: A foldable device with a Snapdragon 8 Gen 2 chip and a high-resolution display, aimed at users seeking a premium foldable experience.
• Google Pixel 9 Pro XL: Powered by Google’s Tensor chip, this phone excels in AI-driven features but has faced scrutiny for battery performance.
• Samsung Galaxy S25 Ultra: Samsung’s non-foldable flagship, also equipped with the Snapdragon 8 Elite chipset, boasts a large, vibrant display and robust performance.

Experiment Performed

The battery drain test was designed to mimic real-world usage, ensuring a fair comparison across these flagship devices. The experiment included five stages:

1. Gaming: A 3-hour session of PUBG with maximum graphics settings, pushing the processors and GPUs to their limits.
2. Streaming: 3 hours of YouTube playback at 1080p 60fps, simulating video consumption every day among Pakistani users.
3. Browsing: 1.5 hours of web browsing using Safari or Chrome, reflecting typical internet usage for work or leisure.
4. Social Media: 1.5 hours of Instagram usage, including scrolling, posting, and interacting, to test battery drain during social networking.
5. Camera Usage: Continuous video recording at 4K 60fps until all devices were depleted entirely, evaluating endurance under high-power tasks.

Each stage was carefully chosen to represent activities Pakistani users engage in daily, from gaming in Karachi’s bustling cafes to streaming dramas in Lahore or browsing in Islamabad’s offices.

Experiment Results

The test tracked the remaining battery percentage after each stage and the total time each device lasted until it was depleted. Here’s how they performed:

Stage	Z Fold 7	iPhone 16 Pro Max	S25 Ultra	OnePlus Open	Pixel 9 Pro XL
After Gaming (3h)	66%	81%	72%	58%	59%
After Streaming (3h)	46%	67%	55%	33%	39%
After Browsing (1.5h)	34%	60%	47%	19%	23%
After Social Media (1.5h)	21%	54%	36%	2%	4%
Total Battery Life	10h 50m	13h 6m	11h 30m	10h 11m	10h 14m

Final Rankings:

1. Apple iPhone 16 Pro Max: 13 hours 6 minutes
2. Samsung Galaxy S25 Ultra: 11 hours 30 minutes
3. Samsung Galaxy Z Fold 7: 10 hours 50 minutes
4. Google Pixel 9 Pro XL: 10 hours 14 minutes
5. OnePlus Open: 10 hours 11 minutes

Analysis and Insights

The results reveal fascinating trends in battery performance, offering valuable lessons for Pakistani buyers:

Apple iPhone 16 Pro Max
With an astonishing 13 hours and 6 minutes, the iPhone 16 Pro Max dominated the test. Its superior performance is likely due to Apple’s optimized A-series chip and iOS, which work together to maximize battery efficiency. This makes it a top choice for users who need a phone that lasts through long days, whether for work, travel, or entertainment.

Samsung Galaxy S25 Ultra
Securing second place with 11 hours and 30 minutes, the S25 Ultra proved its worth as a non-foldable flagship. The Snapdragon 8 Elite chipset, renowned for its balance of power and efficiency, enabled it to perform strongly across all tasks, making it a reliable option for Pakistani professionals and tech enthusiasts.

Samsung Galaxy Z Fold 7
Despite its smaller 4400mAh battery, the Z Fold 7 lasted an impressive 10 hours and 50 minutes. For a foldable device with a large, high-resolution display, this is a remarkable achievement. Its performance suggests that foldables are becoming viable for users who want innovation without sacrificing battery life. Using the cover screen could potentially extend its endurance further, a boon for multitasking users in Pakistan.

Google Pixel 9 Pro XL
Lasting 10 hours and 14 minutes, the Pixel struggled, likely due to the Tensor chip’s less efficient power management. While it excels in AI and camera capabilities, its battery life lags behind that of competitors, which may disappoint users who prioritize longevity.

OnePlus Open
The OnePlus Open was the first to deplete at 10 hours and 11 minutes. Its high-resolution displays and possibly less optimized software contributed to its quicker drain, particularly during browsing and social media usage. As a two-year-old device, its performance is still respectable but falls short of newer flagships.

Interesting Facts and Discussions

Battery Size Isn’t Everything: The iPhone 16 Pro Max’s dominance shows that battery capacity alone doesn’t determine longevity. Its software optimization and efficient chipset play a massive role, a lesson for Pakistani buyers looking beyond specs sheets.

Foldables Are Catching Up: The Z Fold 7’s performance is a game-changer for foldable phones. Its ability to last nearly as long as traditional flagships makes it a compelling choice for tech-savvy users in Pakistan who want a device that stands out.

Chipset Efficiency Matters: The Snapdragon 8 Elite in Samsung devices (Z Fold 7 and S25 Ultra) has proven its worth, striking a balance between power and efficiency. In contrast, the Tensor chip in the Pixel 9 Pro XL and the older Snapdragon 8 Gen 2 in the OnePlus Open struggled to keep up, highlighting the importance of chipset advancements.

Real-World Relevance: The test’s diverse activities, gaming, streaming, browsing, social media, and camera usage mirror how Pakistani users interact with their phones. For instance, gaming is popular among younger users, while streaming and social media are staples for many older users. The iPhone’s lead in these tasks suggests it’s well-suited for Pakistan’s dynamic lifestyle.

Which feature matters more to you—battery life or innovative design like a foldable screen? Would you choose the iPhone 16 Pro Max for its longevity or the Z Fold 7 for its futuristic appeal? Share your thoughts!

Who Should Buy Which Phone?

Battery Life Enthusiasts: The iPhone 16 Pro Max is the clear winner for users who need a phone that lasts through long days, whether for work, travel, or binge-watching dramas.

Foldable Fans: The Samsung Galaxy Z Fold 7 strikes an outstanding balance of innovation and battery performance, making it an ideal choice for those seeking a cutting-edge device with respectable endurance.

Samsung Loyalists: The Galaxy S25 Ultra is a fantastic choice for users who prefer a traditional flagship with top-tier battery life and performance.

AI and Camera Buffs: The Google Pixel 9 Pro XL, despite its shorter battery life, may appeal to those prioritizing AI-driven features and exceptional camera quality.

Budget-Conscious Innovators: The OnePlus Open, although not the longest-lasting, offers a foldable experience at a potentially lower price point, appealing to users willing to trade battery life for a more stylish design.

Conclusion

The battery drain test highlights the Apple iPhone 16 Pro Max as the undisputed leader, with the Samsung Galaxy S25 Ultra and Z Fold 7 following closely. For Pakistani users, these results offer valuable guidance when choosing a flagship device. Whether you prioritize raw battery life or innovative features like foldable displays, there’s a device for every need.

Watch the detailed battery drain test video to observe the entire experiment and these cellphones in operation. Click here