Samsung Galaxy A9 Star vs Xiaomi Mi A2
A spec-by-spec comparison of the Samsung Galaxy A9 Star and the Xiaomi Mi A2, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Our rating | 7/10 | 7/10 |
| Battery | 3,700 mAh | 3,000 mAh |
| Wired charging | — | 18W |
| RAM (max) | — | 6 GB |
| Storage (max) | 256 GB | 128 GB |
| Screen size | 6.28 in | 5.99 in |
| Main camera | 24 MP | 20 MP |
| Weight (lower is lighter) | 188 g | 166 g |
| Released | Jun 2018 | Jul 2018 |
Summary: Samsung Galaxy A9 Star is ahead on battery, storage (max), screen size, main camera. Xiaomi Mi A2 is ahead on weight (lower is lighter).
★ Which should you buy? Samsung Galaxy A9 Star is the stronger overall pick on the measured specs.
Researched with AI assistance by infozme.com from manufacturer and retailer sources — see how we research & rate phones.
Display
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Type | Super AMOLED, Infinity Display | IPS LCD |
| Size | 6.28 inches | 5.99 inches, 92.6 cm2 (~77.4% screen-to-body ratio) |
| Resolution | 1080 x 2220 pixels | 1080 x 2160 pixels, 18:9 ratio (~403 ppi density) |
| Aspect Ratio | 18.5:9 | — |
| Pixel Density | ~393 ppi | — |
| Protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 |
Platform
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| OS | Android 8.0 (Oreo), Samsung Experience 9.0 | Android 8.1 (Oreo), Android One, upgradable to Android 10 |
| Chipset | Qualcomm Snapdragon 660 | Qualcomm SDM660 Snapdragon 660 (14 nm) |
| CPU | Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260) | Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
| GPU | Adreno 512 | Adreno 512 |
Memory
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| RAM | 4GB | — |
| Internal Storage | 64GB | — |
| Card Slot | microSDXC (dedicated slot), up to 256GB | — |
| Card slot | — | No |
| Internal | — | 32GB 4GB RAM, 64GB 4GB RAM, 128GB 6GB RAM |
Main Camera
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Modules | Dual: 16 MP, f/1.7, PDAF + 24 MP, f/1.7 | — |
| Features | LED flash, HDR, panorama | Dual-LED dual-tone flash, HDR, panorama |
| Video | 4K@30fps (3840x2160 pixels) | 4K@30fps, 1080p@30fps (gyro-EIS) |
| Dual | — | 12 MP, f/1.75, 1/2.9", 1.25µm, PDAF
20 MP, f/1.75, 1/2.8", 1.0µm, PDAF |
Selfie Camera
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Modules | Single: 24 MP, f/2.0 | — |
| Features | HDR | LED flash, HDR |
| Video | 1080p@30fps | 1080p@30fps |
| Single | — | 20 MP, f/2.2, 1/3", 0.9µm |
Battery
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Type | Li-Ion 3700 mAh, non-removable | Li-Po 3000 mAh, non-removable |
| Charging | Fast charging (proprietary) | 18W wired, Quick Charge 4+ |
Body
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Dimensions | 162.4 x 77 x 7.5 mm | 158.7 x 75.4 x 7.3 mm (6.25 x 2.97 x 0.29 in) |
| Weight | 188 g | 166 g (5.86 oz) |
| Build | Glass front (Gorilla Glass 5), glass back, aluminum frame | Glass front (Gorilla Glass 5), aluminum back, aluminum frame |
| Colors | Black, White | — |
| SIM | — | Dual SIM (Nano-SIM, dual stand-by) |
Comms
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS, BDS |
| NFC | Yes | No |
| Radio | FM radio | No |
| USB | USB Type-C | USB Type-C 2.0 |
| Infrared port | — | Yes |
Launch
| Samsung Galaxy A9 Star | Xiaomi Mi A2 |
|---|
| Announced | June 2018 | July 2018 |
| Status | Available | Released July 2018 |
Frequently asked questions
Which has the better battery, Samsung Galaxy A9 Star or Xiaomi Mi A2?
Samsung Galaxy A9 Star — 3,700 mAh for the Samsung Galaxy A9 Star versus 3,000 mAh for the Xiaomi Mi A2.
Which is lighter, Samsung Galaxy A9 Star or Xiaomi Mi A2?
Xiaomi Mi A2 — 188 g for the Samsung Galaxy A9 Star versus 166 g for the Xiaomi Mi A2.
Which is newer, Samsung Galaxy A9 Star or Xiaomi Mi A2?
Xiaomi Mi A2 — Jun 2018 for the Samsung Galaxy A9 Star versus Jul 2018 for the Xiaomi Mi A2.
Is the Samsung Galaxy A9 Star or the Xiaomi Mi A2 rated higher?
We rate the Samsung Galaxy A9 Star 7/10 and the Xiaomi Mi A2 7/10.
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