Side-by-side technical data
Samsung Galaxy A21 vs LG K51
Comparison between Samsung Galaxy A21 and LG K51: camera, battery, fast charging, display, performance and colors, side by side. More phones from Samsung and LG.
The verdict
Your pick: Samsung Galaxy A21, ahead on Design & display, Performance & hardware and Connectivity. Unless Camera decides it for you.
| Category | Galaxy A21 | K51 |
|---|---|---|
| Design & display | 4.9 | 4.6 |
| Performance & hardware | 2.5 | 2.1 |
| Camera | 4.3 | 6.8 |
| Connectivity | 5.8 | 4.5 |
| Battery & charging | 3.7 | 3.8 |
Which one is for you?
Samsung Galaxy A21, if you care about…
- AnTuTu Score
- 103,115
- against 92,000
- Maximum Storage Capacity
- 64 GB
- against 32 GB
- RAM Type
- LPDDR4X
- against LPDDR3
- Weight
- 193 g
- against 204 g
LG K51, if you care about…
- Geekbench 6 Single-Core
- 233
- against 164
- Max. download speed
- 300 Mbps
- against 150 Mbps
- Max. upload speed
- 150 Mbps
- against 50 Mbps
- Audio Features
- DTS, DTS:X, Stereo Speakers
- against Loudspeaker, A2DP, LE, AVRCP, DIP, HFP, HID, HSP, MAP, PAN, OPP, PBAP/PAB, HOGP
Specification comparison
Performance
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Processor Model | MediaTek Helio P35 | MediaTek Helio P22 |
| Processor Process Size | 12 nm | 12 nm |
| Graphics GPU | PowerVR GE8320 | PowerVR GE8320 |
| Storage Type | eMMC 5.1 | eMMC 5.1 |
| Maximum CPU Clock | 2.35 GHz Best value | 2 GHz |
| Maximum Storage Capacity | 64 GB Best value | 32 GB |
| AnTuTu Score | 103,115 Best value | 92,000 |
| Geekbench 6 Single-Core | 164 | 233 Best value |
| Geekbench 6 Multi-Core | 744 Best value | 723 |
| CPU Description | Octa-core CPU with four Cortex-A53 cores at up to 2.35 GHz and four Cortex-A53 cores at 1.8 GHz. | 4x Cortex-A53 at 2.0 GHz + 4x Cortex-A53 at 1.5 GHz |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 3 GB | 3 GB |
| RAM Type | LPDDR4X Best value | LPDDR3 |
| Expandable Storage | Yes | Yes |
| AnTuTu version | v8 | v8 |
Design
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Body Colors | Black | Grey |
| Body Thickness | 8.1 mm Best value | 8.5 mm |
| Body Width | 76.7 mm | 77.9 mm |
| Body Height | 167.8 mm | 167 mm |
| Weight | 193 g Best value | 204 g |
| Usable Surface | 79.3 % Best value | 79 % |
| Body Materials | Glass, Plastic | Plastic |
| Resistance Features | — | MIL-STD-810G |
Battery
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Battery Capacity | 4,000 mAh | 4,000 mAh |
| Battery Type | Li-Polymer | Li-Ion |
| Fast Charge Power | 15 W | — |
| Battery Features | Non-Removable, Rechargeable, Fast Charging, Battery Level Indicator | Non-Removable, Battery Level Indicator, Rechargeable |
Display
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 19.5:9 |
| Display Technology | IPS LCD | IPS LCD |
| Display Diagonal | 6.5″ | 6.5″ |
| Display Horizontal Resolution | 720 px | 720 px |
| Display Vertical Resolution | 1,600 px Best value | 1,560 px |
| Display Pixel Density | 270 ppi Best value | 264 ppi |
| Display Features | IPS LCD, Hole-Punch Notch, Scratch Resistant, Capacitive Touch, Multi-Touch, Frameless, Touchscreen | Water Drop Notch, Capacitive Touch, Multi-Touch, Always-On Display, Touchscreen |
Sensors
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Fingerprint Sensor Placement | Rear | Rear |
Sensor
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, Hall Sensor | Fingerprint Sensor, Accelerometer, Gyroscope, Light Sensor, Proximity Sensor, Compass |
Software
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Operating System | Android 10 | Android 9 |
| OS Family | Android | Android |
| OS Version | 10 Best value | 9 |
| OS Update Support | 2 years | — |
| Google Services | Yes | Yes |
Connectivity
| Specification | Galaxy A21 | K51 |
|---|---|---|
| SIM Configurations | Single Nano-SIM, Dual Nano-SIM, Dual SIM Dual Standby, Single SIM Best value | Single Nano-SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B2, 3G UMTS B5, 3G UMTS B8, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 3G UMTS B850, 3G UMTS B900, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B12, 4G LTE B13, 4G LTE B17, 4G LTE B20, 4G LTE B25, 4G LTE B26, LTE B28, 4G LTE B30, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B66, 4G LTE B71 | 2G CDMA BC0, 2G CDMA BC1, 2G CDMA BC10, 2G GSM B2, 2G GSM B3, 2G GSM B5, 2G GSM B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 4G LTE B2, 4G LTE B4, 4G LTE B12, 4G LTE B13, 4G LTE B25, 4G LTE B26, 4G LTE B41, 4G LTE B66, 4G LTE B71 |
| Cellular Technologies | GSM, CDMA, HSPA, UMTS, EVDO, LTE, 4G | 4G, LTE |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 802.11a/b/g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Direct, Wi-Fi Hotspot | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 |
| Bluetooth Profiles | A2DP, LE, AVRCP, DIP, HFP, HID, HSP, MAP, PAN, OPP, PBAP/PAB, HOGP | A2DP, AVRCP, GAVDP, GATT, HFP, HID, HSP, MAP, PAN, SPP, OPP, PBAP/PAB, HOGP, GOEP |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, Galileo Best value | GPS, A-GPS |
| Connectivity Features | 3.5 mm Audio Jack, NFC, FM Radio, Computer Sync, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage, USB OTG, USB Type-C | 3.5 mm Audio Jack, Computer Sync, DLNA, NFC, OTA Sync, FM Radio, Tethering, USB Charging, USB Mass Storage, USB OTG, USB Type-C |
| USB Version | USB 2.0 | — |
| SAR American Head | 1.27 W/kg | 1 W/kg Best value |
| SAR American Body | 0.6 W/kg Best value | 0.97 W/kg |
| SAR (EU) head | 0.23 W/kg | — |
| SAR (EU) body | 1.38 W/kg | — |
| Max. download speed | 150 Mbps | 300 Mbps Best value |
| Max. upload speed | 50 Mbps | 150 Mbps Best value |
Audio
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Microphone Count | 2 Best value | 1 |
| Audio Features | Loudspeaker, A2DP, LE, AVRCP, DIP, HFP, HID, HSP, MAP, PAN, OPP, PBAP/PAB, HOGP | DTS, DTS:X, Stereo Speakers Best value |
Technical
| Specification | Galaxy A21 | K51 |
|---|---|---|
| Model numbers | SM-A215U, SM-A215U1, SM-S215DL, SM-A215W | — |
