Samsung Galaxy S21 vs Samsung Galaxy S25 Plus
Quick Comparison
Samsung Galaxy S25 Plus has better RAM than Samsung Galaxy S21. In terms of display resolution, Samsung Galaxy S25 Plus has better resolution of 3120 x 1440 than Samsung Galaxy S21 which has resolution of 2400 x 1080. Samsung Galaxy S25 Plus has more internal memory than Samsung Galaxy S21
| Name | Samsung Galaxy S21 | Samsung Galaxy S25 Plus |
| RAM | 8 GB | 12 GB |
|---|---|---|
| Display | 6.2 in | 6.7 in |
| Internal Memory | 128 GB | 256 GB |
| Battery | 4000 mAh | 4900 mAh |
| Camera | 64 MP + 12 MP + 12 MP Triple | 50 MP + 12 MP + 10 MP Triple |
| Price | Rs. 69999 | Rs. 99999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is January 14, 2021. The cost of Samsung Galaxy S21 is Rs. 69999. The launch Date of the second phone is January 22, 2025. The cost of Samsung Galaxy S25 Plus is Rs. 99999.
Display comparison
Samsung Galaxy S25 Plus has larger screen size of 6.7 inches in comparison to Samsung Galaxy S21's 6.2 inch screen. Samsung Galaxy S21 has Screen type where as Samsung Galaxy S25 Plus has LTPO AMOLED Screen type. Samsung Galaxy S25 Plus has display density of 513 PPI & Samsung Galaxy S21 has only 421 PPI display density. In terms of screen to body ratio, Samsung Galaxy S25 Plus has better screen to body ratio of ~ 91.8% than Samsung Galaxy S21's ~ 87.2%. Samsung Galaxy S21 has 20:9 aspect ratio where as Samsung Galaxy S25 Plus has 20.5:9 aspect ratio.
Memory comparison
Samsung Galaxy S25 Plus's larger 12 GB RAM is better for playing games and all with respect to Samsung Galaxy S21's lower 8 GB RAM. Samsung Galaxy S25 Plus has more Internal Memory (256 GB) than Samsung Galaxy S21 (128 GB).
Camera comparison
Samsung Galaxy S25 Plus's 50 MP + 12 MP + 10 MP Triple Rear Camera outclasses Samsung Galaxy S21's 64 MP + 12 MP + 12 MP Triple Rear Camera in terms of resolution. Samsung Galaxy S25 Plus will be better choice if you're looking to click lot of selfies as it has better 12 MP Front Camera in comparison to Samsung Galaxy S21's 10 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 10 and the second one on 15 version.
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Full Comparison
| Name | Samsung Galaxy S21 | Samsung Galaxy S25 Plus |
| General | ||
| Model | Galaxy S21 5G | SM-S936B, SM-S936B/DS, SM-S936U, SM-S936U1, SM-S936W, SM-S936N, SM-S9360, SM-S936E, SM-S936E/DS,SM-S936BZSCINS |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | eSIM+eSIM SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | January 14, 2021 | January 22, 2025 |
| In The Box | Handset, Data Cable (Type C to C), Sim Ejection Pin | |
| Design | ||
| Dimensions | 71.2 x 151.7 x 7.9 mm | 75.8 x 158.4 x 7.3 mm |
| Weight | 169 g | 190 g |
| Bezel less | Yes | |
| Colors | Icy Blue, Mint, Navy, Silver Shadow | |
| Display | ||
| Type | Color Dynamic AMOLED 2X (16M Colors) | Color LTPO AMOLED Screen (1B Colors) |
| Touch | Yes | Yes |
| Size | 6.2 inches, 1080 x 2400 pixels, 120 Hz | 6.7 inches, 1440 x 3120 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20.5:9 |
| PPI | ~ 421 PPI | ~ 513 PPI |
| Screen to Body Ratio | ~ 87.2% | ~ 91.8% |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Glass Victus 2 |
| Features | Always-on Display, HDR10+ | HDR10+, 2600 nits (peak) |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 8 GB | 12 GB |
| Storage | 128 GB | 256 GB |
| Storage Type | UFS 3.1 | UFS 4.0 |
| Card Slot | No | No |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.0, A2DP, LE | Yes, v5.4, A2DP, LE |
| USB | Yes, USB-C v3.2 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS, Glonass, Beidou, Galileo, QZSS |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Barometer | Accelerometer, Gyro, Proximity, Compass, Barometer |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1.5 m upto 30 min |
| IP Rating | IP68 | IP68 |
| Dust Resistant | Yes | Yes |
| Extra Features | Photo Assist, Notes Assist, Drawing Assist, Circle to Search, Google Gemini (AI Mobile), 7 Years of Major OS Updates and 7 Years of Security Updates, Titanium Frame, Samsung Care+, Samsung Health, Samsung Wallet | |
| Camera | ||
| Rear Camera | 12 MP ƒ/1.8 (Wide Angle) 64 MP ƒ/2 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide) | 50 MP ƒ/1.8 (Wide Angle) 24mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, OIS 10 MP ƒ/2.4 (Telephoto) 67mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP ƒ/2.2 (Ultra Wide) 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video |
| Auto Focus | Yes | |
| Features | Auto-HDR, Panorama | Bixby Vision, Dual Recording, Food, Hyperlapse, Night, Panorama, Photo, Portrait, Portrait Video, Pro, Pro Video, Single Take, Slow Motion, Video |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 8K @ 30 fps UHD, 4K @ 60 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 10 MP ƒ/2.2 (Wide Angle) Punch Hole | 12 MP ƒ/2.2 (Wide Angle) Punch Hole |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 4K @ 60 fps UHD, 1080p @ 60 fps FHD |
| Technical | ||
| OS | Android v10 | Android v15 |
| Custom UI | One UI 7 | |
| Chipset | Samsung Exynos 2100 | Qualcomm Snapdragon 8Elite |
| CPU | 2.9 GHz, Octa Core Processor | 4.47 GHz, Octa Core Processor |
| Core Details | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M |
| GPU | Mali-G78 MP14 | Adreno 830 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA, DFF, DSF, APE |
| Video | Yes | MP4, M4V, 3GP, 3G2, AVI, FLV, MKV, WEBM |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 4000 mAh, Li-Po Battery | 4900 mAh, Li-ion Battery |
| Fast Charging | Yes, 25W Fast Charging | Yes, 45W |
| Wireless Charging | Yes, 15W | Yes, 15W |
| Reverse Charging | Yes, 4.5W | Yes |
| Reverse Wireless Charging | Yes, 4.5W | |