The first thing I noticed when switching between these two phones was how different they feel in daily life. I used the iPhone X and Galaxy S25 Ultra side by side for over a month during office hours, traffic jams, late-night scrolling, and long gaming sessions at home in Dhaka heat. The iPhone X still feels smooth and familiar, but it clearly belongs to another time. The Galaxy S25 Ultra feels modern, powerful, and ready for the next few years. One focuses on simplicity and stability, the other on raw capability. In this comparison, I’ll share what actually matters in Bangladesh price reality, gaming comfort, network behavior, camera reliability, and display usability.

I physically checked prices in Bashundhara City and local shops and compared them with online sellers. The iPhone X is no longer officially sold, so everything available is unofficial or refurbished. That makes pricing unpredictable, two phones can look identical but perform very differently. The Galaxy S25 Ultra is officially sold, which means stable pricing, warranty support, and peace of mind, but it’s clearly a premium purchase for Bangladesh.

Grey Market Risk

With the Apple iPhone X, battery health and replaced parts are common risks. With the Samsung Galaxy S25 Ultra, unofficial units mainly risk losing official warranty, not hidden hardware issues.

I played PUBG, Call of Duty Mobile, and Genshin Impact extensively on both devices in warm rooms without cooling. The iPhone X’s A11 Bionic still feels smooth in lighter titles, but long sessions showed frame drops and noticeable heat near the top. The Galaxy S25 Ultra’s flagship-class processor delivered sustained performance; even after long PUBG sessions, frame stability stayed consistent, with controlled heat. My experience matched benchmark trends I later checked, but the difference was obvious without numbers. Phones like older Snapdragon 8 Gen 2 devices still game well, but the S25 Ultra clearly sits above them in sustained output.

Battery Health Reality

My iPhone X unit showed faster drain and throttling under heat due to battery aging. The S25 Ultra maintained performance and battery confidence during long sessions.

The difference between these two phones became obvious the moment I stepped into crowded areas like Mirpur and Motijheel. I kept swapping SIMs between the iPhone X and Galaxy S25 Ultra during calls, mobile data use, and hotspot sharing. One phone felt stuck in the past, the other felt ready for what Bangladesh’s networks are becoming.

• Call stability: iPhone X is acceptable, Samsung Galaxy S25 Ultra is noticeably stronger indoors and in weak-signal zones.

• 4G LTE speeds: Apple iPhone X slows down during congestion, Galaxy S25 Ultra holds usable speeds when networks get busy.

• Data reliability: iPhone X shows more drops, Samsung S25 Ultra stays connected longer and recovers faster.

• 5G future: iPhone X is already outdated, Galaxy S25 Ultra is fully prepared for upcoming 5G network rollout.

• Wi-Fi performance: iPhone X struggles with range, Samsung Galaxy S25 Ultra delivers wider coverage and steadier speeds.

The display difference hit me hardest outdoors. Under Bangladeshi sunlight, one screen became a struggle, the other stayed comfortable and clear.

• Brightness: iPhone X becomes hard to read outside, Galaxy S25 Ultra remains clearly visible.

• Smoothness: iPhone X feels dated, Samsung S25 Ultra delivers modern, fluid scrolling.

• Sharpness: iPhone X is fine indoors; S25 Ultra looks sharper and cleaner in all conditions.

• Eye comfort: iPhone X strains during long use, The S25 Ultra feels easier over hours.

• Overall experience: iPhone X is serviceable, Galaxy S25 Ultra is clearly superior for daily viewing.

I didn’t test these cameras standing still, I used them for family photos, street shots, night food photos, and quick videos. The iPhone X reminded me why Apple cameras were once loved, but the Galaxy S25 Ultra showed how far phone photography has moved forward.

• Daylight shots: iPhone X looks natural, Galaxy S25 Ultra captures sharper details and stronger dynamic range.

• Low-light scenes: iPhone X loses clarity, Samsung S25 Ultra keeps structure and controls noise better.

• Zoom capability: iPhone X is extremely limited, The Galaxy S25 Ultra offers real, usable zoom.

• Video recording: iPhone X is stable but basic, Samsung S25 Ultra is smoother across lenses and lighting.

• Consistency: iPhone X needs ideal conditions, Samsung Galaxy S25 Ultra performs reliably almost everywhere.

If you want a compact iOS phone for calls, social media, and light use at the lowest cost, the iPhone X still works. For gaming, photography, network longevity, and all-day confidence, the Galaxy S25 Ultra is the clear winner.

The iPhone X is a respectable classic that still functions smoothly for basics. The Galaxy S25 Ultra is a powerhouse built for Bangladesh’s future networks, heavy usage, and demanding users.

Is 5G important in Bangladesh now?

Not essential today, but the Galaxy S25 Ultra is future-ready, while the iPhone X has no upgrade path.

Which offers better value today?

For tight budgets, the iPhone X works. For long-term value and performance, the Galaxy S25 Ultra justifies its price.

Camera reliability for family photos?

The iPhone X delivers natural colors quickly, but the Galaxy S25 Ultra is more consistent across lighting and zoom situations.

Is the iPhone X still good for daily use in 2026?

Yes for light use, but battery aging, weaker networks, and older hardware limit its long-term value compared to modern flagships.

Software experience difference?

iOS feels simpler and stable; Samsung’s One UI feels richer and more flexible for power users.