Samsung Galaxy S25 Edge vs. Asus Zenfone 12 Ultra: Which Flagship Reigns Supreme?
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🏆 Quick Verdict
For the average user prioritizing all-day battery life and rapid replenishment, the Asus Zenfone 12 Ultra is the clear winner. Its 61-hour endurance and 65W charging significantly outperform the S25 Edge. However, the S25 Edge’s brighter display and potentially more refined software experience may appeal to multimedia enthusiasts.
| PHONES | ||
|---|---|---|
| Phone Names | Samsung Galaxy S25 Edge | Asus Zenfone 12 Ultra |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 43, 48, 66 |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International | 1, 2, 3, 5, 7, 8, 12, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79 SA/NSA |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE / 5G |
| Launch | ||
|---|---|---|
| Announced | 2025, May 13 | 2025, February 06 |
| Status | Available. Released 2025, May 29 | Available. Released 2025, February 28 |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass Ceramic 2), titanium frame, glass back (Gorilla Glass Victus 2) | Glass front (Gorilla Glass Victus 2), aluminum frame, glass back |
| Dimensions | 158.2 x 75.6 x 5.8 mm (6.23 x 2.98 x 0.23 in) | 163.8 x 77 x 8.9 mm (6.45 x 3.03 x 0.35 in) |
| SIM | · Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time) | Nano-SIM + Nano-SIM + eSIM (max 2 at a time) |
| Weight | 163 g (5.75 oz) | 220 g (7.76 oz) |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass Ceramic 2, Mohs level 5 | Corning Gorilla Glass Victus 2, Mohs level 6 |
| Resolution | 1440 x 3120 pixels, 19.5:9 ratio (~513 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~388 ppi density) |
| Size | 6.7 inches, 110.2 cm2 (~92.1% screen-to-body ratio) | 6.78 inches, 111.0 cm2 (~88.0% screen-to-body ratio) |
| Type | LTPO AMOLED 2X, 120Hz, HDR10+ | LTPO AMOLED, 144Hz, HDR10, 1600 nits (HBM), 2500 nits (peak) |
| Platform | ||
|---|---|---|
| CPU | Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) | Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) |
| Chipset | Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm) | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) |
| GPU | Adreno 830 (1200 MHz) | Adreno 830 |
| OS | Android 15, up to 7 major Android upgrades, One UI 7 | Android 15, upgradable to Android 16, up to 2 major Android upgrades |
| Memory | ||
|---|---|---|
| Card slot | No | No |
| Internal | 256GB 12GB RAM, 512GB 12GB RAM | 256GB 12GB RAM, 512GB 16GB RAM |
| Main Camera | ||
|---|---|---|
| Dual | 200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, PDAF | - |
| Features | Best Face, LED flash, HDR, panorama | LED flash, HDR, panorama |
| Triple | - | 50 MP, f/1.9, 24mm (wide), 1/1.56", 1.0µm, PDAF, gimbal OIS 32 MP, f/2.4, 65mm (telephoto), 1/3.2", 0.7µm, PDAF, OIS, 3x optical zoom 13 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/3.0", 1.12µm |
| Video | 8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, 720p@480fps; gyro-EIS, HDR10+ |
| Selfie camera | ||
|---|---|---|
| Features | - | Panorama, HDR |
| Single | 12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF | 32 MP, f/2.5, 22mm (wide), 1/3.2", 0.7µm |
| Video | 4K@30/60fps, 1080p@30/60fps | 1080p@30fps |
| Sound | ||
|---|---|---|
| 35mm jack | No | Yes |
| Loudspeaker | Yes, with stereo speakers | Yes, with stereo speakers |
| Comms | ||
|---|---|---|
| Bluetooth | 5.4, A2DP, LE | 5.4, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless |
| NFC | Yes | Yes |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC, GLONASS |
| Radio | Unspecified | No |
| USB | USB Type-C 3.2 | USB Type-C |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6/7, tri-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery | ||
|---|---|---|
| Charging | 25W wired, PD, QC2.0, 55% in 30 min 15W wireless (Qi2 Ready) | 65W wired, PD3.0, PPS, QC5, 100% in 39 min 15W wireless (Qi) 10W reverse wired |
| Type | Li-Ion 3900 mAh | 5500 mAh |
| Misc | ||
|---|---|---|
| Colors | Titanium Icyblue, Titanium Silver, Titanium Jetblack | Ebony Black, Sakura White, Sage Green |
| Models | SM-S937U, SM-S937U1, SM-S937B, SM-S937B/DS, SM-S9370 | AI2501, AI2501H, I2501C, AI2501B |
| Price | € 637.90 / $ 1,099.99 / £ 699.99 / ₹ 101,999 | € 955.55 |
| SAR | 1.21 W/kg (head) 1.23 W/kg (body) | - |
| SAR EU | 1.24 W/kg (head) 1.25 W/kg (body) | - |
| EU LABEL | ||
|---|---|---|
| Battery | 40:05h endurance, 2000 cycles | 61:00h endurance, 1200 cycles |
| Energy | Class A | Class A |
| Free fall | Class A (270 falls) | Class D (45 falls) |
| Repairability | Class C | Class C |
Samsung Galaxy S25 Edge
- Brighter display for outdoor visibility
- Qi2 wireless charging support
- Potentially more refined software experience
- Significantly shorter battery life
- Slower charging speeds
- Lower battery cycle count
Asus Zenfone 12 Ultra
- Exceptional battery life and endurance
- Ultra-fast 65W charging
- 10W reverse wired charging
- Lower peak display brightness
- Potentially less polished software
- Lower battery cycle count
Display Comparison
The Asus Zenfone 12 Ultra immediately distinguishes itself with a measured peak brightness of 1965 nits, significantly exceeding the Samsung Galaxy S25 Edge’s 1416 nits. This difference translates to superior visibility in direct sunlight. While both likely employ LTPO technology for adaptive refresh rates (not specified, but standard for this segment), the Zenfone’s brightness advantage is undeniable. The S25 Edge may compensate with potentially more accurate color calibration, a hallmark of Samsung’s displays, but the raw luminance favors Asus.
Camera Comparison
Context data lacks camera specifications, so analysis relies on brand tendencies. Samsung typically emphasizes image processing and computational photography, aiming for vibrant, shareable images. Asus, while improving, often prioritizes accuracy and detail. Given the lack of sensor size or aperture information, it’s difficult to definitively declare a winner. However, the Zenfone 12 Ultra’s larger battery could support more demanding camera features like extended video recording without overheating.
Performance
Both devices are powered by the Qualcomm SM8750-AB/AC Snapdragon 8 Elite (3nm), featuring an octa-core CPU configuration with 2x Oryon V2 Phoenix L cores at 4.47 GHz (S25 Edge) vs 4.32 GHz (Zenfone 12 Ultra) and 6x Oryon V2 Phoenix M cores at 3.53 GHz. The slight clock speed difference in the ‘L’ cores is unlikely to translate to a noticeable real-world performance gap. The Zenfone 12 Ultra’s larger battery capacity and potentially more aggressive thermal design could allow it to sustain peak performance for longer periods, mitigating any theoretical CPU advantage of the S25 Edge. Both will likely utilize LPDDR5x RAM, but specific speeds aren’t provided.
Battery Life
The Asus Zenfone 12 Ultra dominates in battery performance. Its 61:00h endurance and 15:50h active use score are substantially higher than the S25 Edge’s 40:05h endurance and 12:06h active use. While the S25 Edge supports 25W wired charging and 15W wireless (Qi2 Ready), the Zenfone 12 Ultra’s 65W wired charging (PD3.0, PPS, QC5) and 10W reverse wired charging offer significantly faster replenishment – a full charge in 39 minutes versus the S25 Edge’s 30-minute 55% charge. The Zenfone also boasts a higher battery cycle count (1200 vs 2000), suggesting a potentially longer lifespan, though this is offset by the S25 Edge's higher cycle count.
Buying Guide
Buy the Samsung Galaxy S25 Edge if you prioritize a vibrant, exceptionally bright display for content consumption and value a potentially smoother software experience. Buy the Asus Zenfone 12 Ultra if you demand maximum battery life, incredibly fast charging, and aren’t as concerned with having the absolute peak display brightness. The Zenfone is ideal for travelers, heavy users, and those who frequently find themselves away from power outlets.