Samsung Galaxy M51 vs Samsung Galaxy S21+ Specs Comparison
Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.
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| Samsung Galaxy M51 | Samsung Galaxy S21+ | 
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                                    Released
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                                                Sep 11, 2020
                                    
             
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                                    Released
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                                                Jan 29, 2021
                                    
             
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                                                6.7-inch · 2340x1080px
                                    
             
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                                                6.7-inch · 2400x1080px
                                    
             
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                                                Quad camera
                                    
             
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                                                Triple camera
                                    
             
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                                                6GB · 128GB
                                    
             
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                                                8GB · 128GB
                                    
             
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                                                7000 mAh
                                    
             
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                                                4800 mAh
                                    
             
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| Check prices | 
Availability
| Officially announced | |
|---|---|
| Aug 31, 2020 | Jan 14, 2021 | 
| Prices (MSRP) | |
| €360 | 8GB/128GB - $1000 | 
Design
| Dimensions | |
|---|---|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 6.45 x 3.00 x 0.37 inches  163.9 x 76.3 x 9.5 mm  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        6.35 x 2.98 x 0.31 inches  161.5 x 75.6 x 7.8 mm  | 
        
                                    
| Weight | |
| 7.51 oz / 213.0 g | 7.13 oz / 202.0 g | 
| Materials | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Back: Plastic Frame: Plastic  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum  | 
        
                                    
| Resistance | |
| Water, Dust; IP68 | |
| Biometrics | |
| Fingerprint (touch) | 2D Face unlock, Ultrasonic in-screen fingerprint | 
| Keys | |
| Right: Volume control, Lock/Unlock key | Right: Volume control, Lock/Unlock key | 
| Colors | |
| Black, White | Phantom silver, Black, Violet | 
Display
| Size | |
|---|---|
| 6.7-inch, 88.27% screen-to-body | 6.7-inch, 88.63% screen-to-body | 
| Type | |
| Super AMOLED Plus | Dynamic AMOLED, 120Hz, HDR, 1300 nits | 
| Resolution | |
| 2340x1080px, 20:9 ratio, 385 PPI | 2400x1080px, 20:9 ratio, 393 PPI | 
| Protection | |
| Corning Gorilla Glass 3 | Corning Gorilla Glass Victus | 
PhoneArena Display Test
        | Bright Max (20% APL) | |
|---|---|
| Untested | Untested | 
| Bright Min | |
| Untested | 1.5 (Good) | 
                Learn more on our
                PhoneArena Display Test Results page.
            
            Hardware
| System chip | |
|---|---|
| Snapdragon 730 SM7150-AA (8 nm) | Snapdragon 888 (5 nm) | 
| Processor | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Octa-core 2x2.2GHz Kryo 470 6x1.8GHz Kryo 470  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680  | 
        
                                    
| GPU | |
| Adreno 618 | Adreno 660 | 
| Memory | |
| 6GB (LPDDR4)/128GB |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB  | 
        
                                    
| Storage expansion | |
| microSDXC up to 512 GB | not expandable | 
| OS | |
| Android (10) | Android (13, 12, 11) | 
Battery
| Type | |
|---|---|
| 7000 mAh | 4800 mAh, Li - Polymer | 
| Charging | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Fast charging Reverse wired charging  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging  | 
        
                                    
| Charge speed | |
| Wired: 25.0W |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Wired: 25.0W Wireless: 15.0W  | 
        
                                    
Battery Life Estimate
                            Untested
                        Browsing
                            Untested
                        Video
                            Untested
                        Gaming
                            Untested
                        Battery Life Estimate
                            5h 26min
                        Browsing
                            10h 50min
                        Video
                            8h 27min
                        Gaming
                            8h 36min
                        Camera
| Rear | |
|---|---|
| Quad camera | Triple camera | 
| Main camera | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 64 MP (PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 0.8 μm  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm  | 
        
                                    
| Second camera | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 12 MP (Ultra-wide) Aperture size: F2.2  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        12 MP (Ultra-wide, PDAF) Aperture size: F1.8 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm  | 
        
                                    
| Third camera | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 5 MP (Macro) Aperture size: F2.4  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/2.55" Pixel size: 0.8 μm  | 
        
                                    
| Fourth camera | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 5 MP (Depth information) Aperture size: F2.4  | 
        
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| Flash | |
| LED | LED | 
| Video recording | |
| 4K UHD (30 fps), 1080p |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS  | 
        
                                    
| Front | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 32 MP (HDR) Video capture: 1080p  | 
        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)  | 
        
                                    
Connectivity & Features
| Bluetooth | |
|---|---|
| 5.0 | 5.0 | 
| WLAN | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax  | 
        
                                    
| USB | |
| Type-C, USB 2.0 | Type-C, USB 3.2 | 
| Sensors | |
| Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor | Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor | 
| Hearing aid compatible | |
| M3/T3 | |
| Location | |
| GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning | GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning | 
| Other | |
| NFC | NFC, ANT+ | 
Multimedia
| Headphones | |
|---|---|
| 3.5mm jack | No 3.5mm jack | 
| Speakers | |
| Earpiece, Loudspeaker | Earpiece, Multiple speakers | 
| Features | |
| 32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus | |
| Screen mirroring | |
| Wireless screen share | |
| Radio | |
| FM, Stereo, RDS | |
| Additional microphone(s) | |
| Noise cancellation | |
Cellular
| 5G Bands | |
|---|---|
| n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave | |
| 4G (FDD) Bands | |
| 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 66 | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71 | 
| 4G (TDD) Bands | |
| 38, 40, 41 | 38, 39, 40, 41, 46, 48 | 
| 3G Bands | |
| 1, 2, 4, 5, 8 | 1, 2, 4, 5, 8 | 
| Data Speed | |
| LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS | LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS | 
| Dual SIM | |
| Yes | |
| SIM type | |
| Nano SIM | Nano SIM | 
Regulatory Approval
| FCC approval | |
|---|---|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Date approved: Dec 18, 2020 FCC ID value: A3LSMG996U  | |
| Measured SAR | |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Head: 0.65 W/kg Body: 0.95 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.04 W/kg Phablet: 3.97 W/kg  | 
        
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Alternative variants
with 256GB storage
                                    | Memory | 256GB | 
|---|---|
| Prices (MSRP) | $1050 | 
for Europe
                                    | System chip | Samsung Exynos 2100 (5 nm) | 
|---|---|
| Processor |                                                                                                                                 
                                                                                                                                                                                                                                                                    
                                            Octa-core 1x2.91GHz Cortex-X1 3x2.81GHz Cortex-A78 4x2.2GHz Cortex-A55  | 
        
                                                
| GPU | Mali G78 MP14 | 
| Weight | 7.05 oz / 200.0 g | 
| 5G Bands | SA, NSA, Sub-6 | 
| FCC approval |                                                                                                                                 
                                                                                                                                                                                                                                                                    
                                            Date approved: Dec 18, 2020 FCC ID value: A3LSMG996B  | 
| Measured SAR |                                                                                                                                 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
                                            Head: 0.24 W/kg Body: 0.75 W/kg Simultaneous Transmission: 3.59 W/kg Wireless Router: 1.26 W/kg Phablet: 1.95 W/kg  | 
        
                                                
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