ASUS Zenfone 12 Ultra vs Samsung Galaxy S25
Overall: ASUS Zenfone 12 Ultra. Both use the 8 Elite (flagship). The Zenfone 12 Ultra has the bigger battery (5,500 mAh against 4,000 mAh). The Zenfone 12 Ultra has faster wired charging (65 W against 25 W). The Galaxy S25 has the longer update promise (until about 2032 against until about 2027).
ASUS
Zenfone 12 Ultra
Snapdragon 8 Elite
Samsung
Galaxy S25
Snapdragon 8 EliteWhat matters to you?
Tap what you use your phone for. The overall pick then counts only those.
Overall: ASUS Zenfone 12 Ultra
Better for everyday life. Score: Zenfone 12 Ultra 1, Galaxy S25 0 (clear win 2, slight edge 1, same 0).
Backed by facts100% of areas
Pick this for…
Who wins for each way you use a phone. Tap a card for the evidence.
Social media
Chats, calls, lives and feeds
Same in practiceEither oneBenchmarksOfficialPublic infoWhy? See the evidenceHide the evidence
Social media
Chats, calls, lives and feeds
- Everyday speed: both use the 8 Elite, 5 of 5.
- Memory: 12 GB against 12 GB, so more apps stay open when you switch between chats and feeds.
- Front camera video for calls and lives: 1080p@30fps against 4K@60fps.
Gaming
Light games to heavy 3D, online and offline
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Gaming
Light games to heavy 3D, online and offline
- Gaming power: both use the 8 Elite, 5 of 5.
- Graphics: the same Adreno 830 (3 nm) in both.
- Screen: 120 Hz against 120 Hz.
- Light games run well on both. The gap shows in heavy 3D games. How long a phone holds its speed when hot needs testing, so it is not judged.
Camera and content creation
Photos, video recording and editing
Same in practiceEither oneOfficialBenchmarksPublic infoWhy? See the evidenceHide the evidence
Camera and content creation
Photos, video recording and editing
- Video recording: 8K@24fps against 8K@30fps.
- Front camera video: 1080p@30fps against 4K@60fps.
- Editing and export: both use the 8 Elite, 5 of 5. Storage: not listed for either phone.
- Photo and video quality need side-by-side testing, so we do not judge them from megapixels.
Work, study and AI
Learning, research, writing and AI assistants
Same in practiceEither oneBenchmarksOfficialWhy? See the evidenceHide the evidence
Work, study and AI
Learning, research, writing and AI assistants
- Heavy work: both use the 8 Elite, 5 of 5.
- Memory: 12 GB against 12 GB. On-phone AI features need plenty of memory; most AI assistants run online and work on any phone.
- Screen: 6.78″ AMOLED against 6.2″ LTPO AMOLED.
Movies, music and streaming
YouTube, Netflix, sport, music and podcasts
Same in practiceEither oneOfficialBenchmarksPublic infoWhy? See the evidenceHide the evidence
Movies, music and streaming
YouTube, Netflix, sport, music and podcasts
- Screen: 6.78″ AMOLED against 6.2″ LTPO AMOLED.
- AV1 video decoding (smoother YouTube and Netflix, less battery): yes against yes.
- Sound: stereo speakers, against stereo speakers.
Everyday life
Maps, ride-hailing, payments and banking
Slight edgePick Zenfone 12 UltraOfficialPublic infoWhy? See the evidenceHide the evidence
Everyday life
Maps, ride-hailing, payments and banking
- Tap to pay (NFC): yes against yes.
- Location: dual-band GPS (L1 + L5) against single-band GPS. Dual-band GPS stays accurate between tall buildings.
Phone basics
What every use depends on, side by side.
Battery life
Zenfone 12 Ultra5,500 mAh65 W charging
Galaxy S254,000 mAh25 W charging
Efficiency: 8 Elite 5 of 5, 8 Elite 5 of 5
Storage
Zenfone 12 Ultra256 GB / 512 GBType not published
Galaxy S25128 GB / 256 GBType not published
UFS opens apps and files far faster than eMMC
Speed
Zenfone 12 Ultra8 Elite12 GB / 16 GB RAM
Galaxy S258 Elite12 GB RAM
Everyday speed: 5 of 5 against 5 of 5
Screen
Zenfone 12 Ultra6.78″ AMOLED120 Hz
Galaxy S256.2″ LTPO AMOLED120 Hz
Bigger is not better; pick the size you like
Toughness
Zenfone 12 UltraIP68
Galaxy S25IP68
IP68 survives dust and a dunk in water
Years of updates
Zenfone 12 UltraUntil about 20272 Android upgrades, 2 years of security updates
Galaxy S25Until about 20327 Android upgrades, 7 years of security updates
From the maker’s written update promise
Side by side
Show differences only
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Size | 6.78″ | 6.2″ |
| Type | AMOLED | LTPO AMOLED |
| Resolution | 2400 × 1080 | 1080 × 2340 |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 2500 nits | 2600 nits |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Elite |
| RAM | 12 GB / 16 GB | 12 GB |
| Storage | 256 GB / 512 GB | 128 GB / 256 GB |
| Storage type | — | — |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Zoom | 3x optical | 3x optical |
| Video recording | 8K@24fps | 8K@30fps |
| Front camera | 32 MP | 12 MP |
| Front video | 1080p@30fps | 4K@60fps |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Capacity | 5500 mAh | 4000 mAh |
| Wired charging | 65 W | 25 W |
| Wireless charging | 15 W | 15 W |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| Headphone jack | — | — |
| NFC (tap to pay) | Yes | Yes |
| Dual-band GPS | Yes | No |
| 5G | Yes | Yes |
| eSIM | Yes | Yes |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| Weight | 220 g | 162 g |
| Thickness | 8.9 mm | 7.2 mm |
| Water resistance | IP68 | IP68 |
| Spec | Zenfone 12 Ultra | Galaxy S25 |
|---|---|---|
| At launch | Android 15 | Android 15 |
| OS upgrades | 2 years | 7 years |
| Security updates | Not stated | Not stated |
Quick answers
- Is the Zenfone 12 Ultra or the Galaxy S25 better for social media?
- For social media, there’s no real difference between them. Everyday speed: both use the 8 Elite, 5 of 5.
- Is the Zenfone 12 Ultra or the Galaxy S25 better for gaming?
- For gaming, there’s no real difference between them. Gaming power: both use the 8 Elite, 5 of 5.
- Is the Zenfone 12 Ultra or the Galaxy S25 better for camera and content creation?
- For camera and content creation, there’s no real difference between them. Video recording: 8K@24fps against 8K@30fps.
- Is the Zenfone 12 Ultra or the Galaxy S25 better for work, study and ai?
- For work, study and ai, there’s no real difference between them. Heavy work: both use the 8 Elite, 5 of 5.
- Is the Zenfone 12 Ultra or the Galaxy S25 better for movies, music and streaming?
- For movies, music and streaming, there’s no real difference between them. Screen: 6.78″ AMOLED against 6.2″ LTPO AMOLED.
- Is the Zenfone 12 Ultra or the Galaxy S25 better for everyday life?
- The Zenfone 12 Ultra has a slight edge for everyday life. Tap to pay (NFC): yes against yes.
What we don’t judge on
Security patch level, charging watts, megapixels, benchmark scores and guessed values.
- Security patch level and other software settings change with every update, so one reading can’t judge a phone. We use the maker’s written update promise.
- Charging watts, megapixels, screen size and weight are shown, never scored as better: faster charging doesn’t make a battery last longer, and more megapixels don’t make better photos.
- Chip estimates (1 to 5) come from published design facts: core design and year, graphics, manufacturing and video features. Photo quality and how long a phone holds its speed when hot need testing, so they aren’t judged.
- Values with no source show “not published” and stay out of the verdict.
ASUS Zenfone 12 Ultra specsSamsung Galaxy S25 specsCompare with another phone