Samsung Galaxy A51 vs O2 XDA Atom
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| PHONES | ||
|---|---|---|
| Phone Names | Samsung Galaxy A51 | O2 XDA Atom |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 | - |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 | - |
| EDGE | - | Class 10 |
| GPRS | - | Class 10 |
| Speed | HSPA, LTE | - |
| Technology | GSM / HSPA / LTE | GSM |
| 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 - SM-A515U | - | |
| Launch | ||
|---|---|---|
| Announced | 2019, December 12. Released 2019, December 16 | 2005, November |
| Status | Discontinued | Discontinued |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 3), plastic back, plastic frame | - |
| Dimensions | 158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in) | 102 x 58 x 18.5 mm (4.02 x 2.28 x 0.73 in) |
| SIM | · Nano-SIM· Nano-SIM + Nano-SIM | Mini-SIM |
| Weight | 172 g (6.07 oz) | 140 g (4.94 oz) |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 3 | - |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~405 ppi density) | 240 x 320 pixels, 4:3 ratio (~148 ppi density) |
| Size | 6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio) | 2.7 inches, 22.6 cm2 (~38.2% screen-to-body ratio) |
| Type | Super AMOLED | TFT resistive touchscreen, 256K colors (65K effective) |
| - | Handwriting recognition | |
| Platform | ||
|---|---|---|
| CPU | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) | Intel PXA272 416 MHz |
| Chipset | Exynos 9611 (10 nm) | - |
| GPU | Mali-G72 MP3 | - |
| OS | Android 10, upgradable to Android 13, One UI 5 | Microsoft Windows Mobile 5.0 PocketPC |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | miniSD |
| Internal | 64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM | 64MB RAM, 128MB ROM |
| UFS 2.0 | - | |
| Main Camera | ||
|---|---|---|
| Features | LED flash, panorama, HDR | LED flash |
| Quad | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP (macro) Auxiliary lens | - |
| Single | - | 2 MP |
| Video | 4K@30fps, 1080p@30/120fps; gyro-EIS | Yes |
| Selfie camera | ||
|---|---|---|
| Features | HDR | - |
| Single | 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm | - |
| Video | 4K@30fps, 1080p@30fps | - |
| - | No | |
| Sound | ||
|---|---|---|
| 3.5mm jack | Yes | No |
| 35mm jack | Yes | No |
| Alert types | - | Vibration; Downloadable polyphonic, MP3, AAC ringtones |
| Loudspeaker | Yes | Yes, with stereo speakers |
| Comms | ||
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | 1.2 |
| Infrared port | - | Yes |
| NFC | Yes | - |
| Positioning | GPS, GLONASS, GALILEO, BDS | No |
| Radio | FM radio | FM radio |
| USB | USB Type-C 2.0, OTG | miniUSB |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11b |
| Features | ||
|---|---|---|
| Browser | - | WAP 2.0/xHTML, HTML (PocketIE) |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, compass | - |
| Virtual proximity sensing ANT+ | Pocket Office MP3/AAC/AAC+/WMA/OGG/AMR player WMV/MP4 player | |
| Battery | ||
|---|---|---|
| Charging | 15W wired | - |
| Stand-by | - | Up to 150 h |
| Talk time | - | Up to 5 h 30 min |
| Type | Li-Po 4000 mAh, non-removable | Removable Li-Po 1530 mAh battery |
| Misc | ||
|---|---|---|
| Colors | Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink | Silver |
| Models | SM-A515F, SM-A515F/DSN, SM-A515F/DS, SM-A515F/DST, SM-A515F/DSM, SM-A515F/N, SM-A515U, SM-A515U1, SM-A515W, SM-A515X, SM-S515DL | - |
| Price | About 100 EUR | About 260 EUR |
| SAR | 0.80 W/kg (head) 0.67 W/kg (body) | - |
| SAR EU | 0.37 W/kg (head) 1.59 W/kg (body) | - |
| Pricing | ||
|---|---|---|
| 128GB 4GB RAM | $ 299.99 | - |
| 128GB 6GB RAM | $ 674.99 | - |
| 64GB 4GB RAM | $ 211.50 | - |
| RENEWED | £ 179.00 | - |
| Tests | ||
|---|---|---|
| Audio quality | Noise -93.1dB / Crosstalk -87.3dB | - |
| Battery life | Endurance rating 86h | - |
| Camera | Photo / Video | - |
| Display | Contrast ratio: Infinite (nominal) | - |
| Loudspeaker | -28.6 LUFS (Average) | - |
| Performance | AnTuTu: 113051 (v7), 175363 (v8) GeekBench: 5401 (v4.4), 1294 (v5.1) GFXBench: 5.6fps (ES 3.1 onscreen) | - |
| OUR TESTS | ||
|---|---|---|
| Audio quality | Noise -93.1dB / Crosstalk -87.3dB | - |
| Battery (old) | Endurance rating 86h | - |
| Camera | Photo / Video | - |
| Display | 636 nits max brightness (measured) | - |
| Loudspeaker | -28.6 LUFS (Average) | - |
| Performance | AnTuTu: 113051 (v7), 175363 (v8) GeekBench: 5401 (v4.4), 1294 (v5.1) GFXBench: 5.6fps (ES 3.1 onscreen) | - |