Google Pixel 4a (G025J) vs Quantum Sky
Side by side comparison between Google Pixel 4a vs Quantum Sky phones, differences, pros, cons and full specifications. What's the better?
,
5.81"
OLED
OLED
1080x2340
12.2
MP
MP
8mp
6GB
RAM
RAM
Octa-core
3140
mAh
mAh
(Non removable)
vs
5.5"
IPS
IPS
1080x1920
13
MP
MP
16mp
4GB
RAM
RAM
Octa-core
4010
mAh
mAh
(Non removable)
What's the better phone? Google Pixel 4a (G025J)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
26 Advantages 
9 Advantages | 19 Common items in both devices |
| 60Hz |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| HDR photo/video on both cameras / HDR photo on both cameras |
| 4G LTE-A / 4G LTE |
| Capacitive |
| +12 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Model | Pixel 4a (G025J) | Quantum Sky |
| Other model names | Google Pixel 4a G025J, HTC Sunfish | Positivo Quantum Sky 4G 64GB, Quantum Sky QX1 |
| Country or region available |  USA |  Brazil |
| Brand | Quantum | |
| Release date | 8/20/2020, Announced: 8/3/2020 | 8/29/2017 |
| Depth | 8.2 millimeters (0.32 inches) | 8.3 millimeters (0.33 inches) |
| Size (width x height) | 69.4 x 144 millimeters (2.73 x 5.67 in) | 76.5 x 154.5 millimeters (3.01 x 6.08 in) |
| Weight | 143 grams (5.01 ounces) | 182 grams (6.37 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front, aluminum back with plastic ends |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Display type | OLED | TFT IPS LCD |
| Screen size | 5.81" inches | 5.5" inches |
| Screen-to-body ratio | ~82.9% (screen-to-body ratio) | ~70.6% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 1080x1920 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 444 PPI | 401 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 3 |
| Refresh rate | 60Hz | 60Hz |
| Display features | HDR8 Always-On Display | 2.5D glass |
🤖 Operating System | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| System version | Android 10 | Android 7.0 Nougat |
| Firmware update | Android 13 | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Chipset | 64bit: Qualcomm Snapdragon 730G (SM7150-AB) (8nm) | 64bit: MediaTek Helio P10 (MT6755) (28nm) |
| CPU | Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core) | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.2GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 618 (700MHz) | ARM Mali-T860 MP2 (700MHz) |
| Performance (benchmark) | AnTuTu: 268714 (v8) Geekbench: 6426 (v4.4), 1626 (v5.1) GFXBench: 17fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| RAM memory | 6GB LPDDR4X | 4GB LPDDR3 |
| Internal storage | 128GB (109GB available) UFS 2.1 | 64GB (53GB available) eMMC 5.1 |
| External storage | Not supported | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 2 slots (Dual-SIM) micro-SIM (3FF) and nano-SIM (4FF) |
| Maximum Download / Upload | 600/75 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Tri-Band 850/1800/1900 |
| Primary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/1900/2100 |
| Primary 4G network | LTE Cat12/5 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41) VoLTE | LTE Cat6 (1, 2, 3, 4, 5, 7, 28) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | Not supported | GSM 850/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Back camera (main camera) | 12.2 megapixels | 13 megapixels |
| Main camera resolution | 4032x3024 pixels | 4128x3096 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash on both cameras |
| Focal aperture | f/1.7 (aperture) | f/2.0 (aperture) |
| Focal length | 27mm lens | feature not registered |
| Sensor size | 1/2.55" inches | feature not registered |
| Pixel size | 1.4µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo/video on both cameras | HDR photo on both cameras |
| Camera extras | 1080p@120fps | Sony IMX258 (back) Samsung S5K3P3 (front) |
📸 Front camera | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Front camera (secondary) | 8 megapixels | 16 megapixels |
| Front camera resolution | 3264x2448 pixels | 4608x3456 pixels |
| Video recording (secondary) | Full HD (1920x1080) | HD (1280x720) |
| Front flash | Not supported | LED |
| Focal aperture | f/2.0 (aperture) | f/2.0 (aperture) |
| Focal length | 24mm lens | feature not registered |
| Sensor size | 1/4" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Loudspeaker | Stereo sound | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| USB | USB 3.1 Type-C reversible connector | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, QZSS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Pedometer Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3140 mAh | 4010 mAh |
| Charger, watts | 18W Wired fast charging USB Power Delivery 2.0 | 10W Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 28 hours (1.2 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Just Black, Barely Blue • Google Pay • Google Cast | • Colors: Silver, Gold • Screen protector included • Silicon case included |
☢️ Radiation rate | ||
| Google Pixel 4a (G025J) | Quantum Sky | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |