Google Pixel 3a vs Google Pixel 4a
A spec-by-spec comparison of the Google Pixel 3a and the Google Pixel 4a, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Google Pixel 3a | Google Pixel 4a |
|---|
| Price | £95 | £99 |
| Our rating | 8/10 | 8/10 |
| Battery | 3,000 mAh | 3,140 mAh |
| Wired charging | 18W | 18W |
| RAM (max) | 4 GB | 6 GB |
| Storage (max) | 64 GB | 128 GB |
| Screen size | 5.6 in | 5.81 in |
| Main camera | 12.2 MP | 12.2 MP |
| Weight (lower is lighter) | 147 g | 143 g |
| Released | May 2019 | Aug 2020 |
Summary: Google Pixel 4a is ahead on battery, ram (max), storage (max), screen size.
★ Which should you buy? Google Pixel 4a is the stronger overall pick on the measured specs. If budget matters more than the extra capability, Google Pixel 3a is the cheaper option.
Researched with AI assistance by infozme.com from manufacturer and retailer sources — see how we research & rate phones.
Display
| Google Pixel 3a | Google Pixel 4a |
|---|
| Type | OLED | OLED, HDR |
| Size | 5.6 inches, 79.6 cm2 (~75.0% screen-to-body ratio) | 5.81 inches, 84.4 cm2 (~80.4% screen-to-body ratio) |
| Resolution | 1080 x 2220 pixels, 18.5:9 ratio (~441 ppi density) | 1080 x 2340 pixels, 19.5:9 ratio (~443 ppi density) |
| Protection | Dragontrail Glass | Corning Gorilla Glass 3 |
Platform
| Google Pixel 3a | Google Pixel 4a |
|---|
| OS | Android 9.0 (Pie), upgradable to Android 12 | Android 10, upgradable to Android 13 |
| Chipset | Qualcomm Snapdragon 670 (10 nm) | Qualcomm Snapdragon 730G (8 nm) |
| CPU | Octa-core (2x2.0 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver) | Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver) |
| GPU | Adreno 615 | Adreno 618 |
Memory
| Google Pixel 3a | Google Pixel 4a |
|---|
| Card slot | No | No |
| Internal | 64GB 4GB RAM | 128GB 6GB RAM (UFS 2.1) |
Main Camera
| Google Pixel 3a | Google Pixel 4a |
|---|
| Single | 12.2 MP, f/1.8, 28mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS | — |
| Features | Dual-LED flash, HDR, panorama, Night Sight, Top Shot, Portrait Mode, Super Res Zoom | LED flash, Auto-HDR, panorama, Night Sight, Top Shot, Portrait Mode, Live HDR+, Motion Auto Focus, Frequent Faces |
| Video | 4K@30fps, 1080p@30/60/120fps | 4K@30fps, 1080p@30/60/120fps, 720p@240fps; gyro-EIS |
| Modules | — | 12.2 MP, f/1.7, 27mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS |
Selfie Camera
| Google Pixel 3a | Google Pixel 4a |
|---|
| Single | 8 MP, f/2.0, 24mm (wide), 1.12µm | — |
| Features | HDR | Auto-HDR |
| Video | 1080p@30fps | 1080p@30fps |
| Modules | — | 8 MP, f/2.0, 24mm (wide), 1.12µm |
Battery
| Google Pixel 3a | Google Pixel 4a |
|---|
| Type | Li-Po 3000 mAh, non-removable | Li-Po 3140 mAh, non-removable |
| Charging | 18W wired | 18W wired, PD2.0 |
Body
| Google Pixel 3a | Google Pixel 4a |
|---|
| Dimensions | 151.3 x 70.1 x 8.2 mm (5.96 x 2.76 x 0.32 in) | 144 x 69.4 x 8.2 mm (5.67 x 2.73 x 0.32 in) |
| Weight | 147 g (5.19 oz) | 143 g (5.04 oz) |
| Build | Polycarbonate unibody (plastic back) | Glass front (Gorilla Glass 3), plastic back, plastic frame |
| SIM | Single SIM (Nano-SIM and/or eSIM) | Nano-SIM and/or eSIM |
Comms
| Google Pixel 3a | Google Pixel 4a |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE, aptX HD |
| Positioning | GPS, GLONASS, Galileo | GPS, GLONASS, GALILEO, QZSS |
| NFC | Yes | Yes |
| Radio | No | No |
| USB | USB-C 2.0 | USB Type-C 3.1 |
Launch
| Google Pixel 3a | Google Pixel 4a |
|---|
| Announced | 2019, May 07 | August 3, 2020 |
| Status | Available. Released 2019, May 15 | Released August 20, 2020 |
Frequently asked questions
Which has the better battery, Google Pixel 3a or Google Pixel 4a?
Google Pixel 4a — 3,000 mAh for the Google Pixel 3a versus 3,140 mAh for the Google Pixel 4a.
Which has more RAM, Google Pixel 3a or Google Pixel 4a?
Google Pixel 4a — 4 GB for the Google Pixel 3a versus 6 GB for the Google Pixel 4a.
Which is lighter, Google Pixel 3a or Google Pixel 4a?
Google Pixel 4a — 147 g for the Google Pixel 3a versus 143 g for the Google Pixel 4a.
Which is newer, Google Pixel 3a or Google Pixel 4a?
Google Pixel 4a — May 2019 for the Google Pixel 3a versus Aug 2020 for the Google Pixel 4a.
Is the Google Pixel 3a or the Google Pixel 4a rated higher?
We rate the Google Pixel 3a 8/10 and the Google Pixel 4a 8/10.
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