Side-by-side technical data
Ulefone Armor X31 Pro vs vivo Y39
Comparison between Ulefone Armor X31 Pro and vivo Y39: camera, battery, fast charging, display, performance and colors, side by side. More phones from Ulefone and vivo.
The verdict
Neither runs away with it: each wins something.
| Category | Armor X31 Pro | Y39 |
|---|---|---|
| Design & display | 5.2 | 5.7 |
| Performance & hardware | 5.3 | 5.5 |
| Camera | 4.5 | 3.8 |
| Connectivity | 6.7 | 6.3 |
| Battery & charging | 6.6 | 7.1 |
Which one is for you?
Ulefone Armor X31 Pro, if you care about…
- Bluetooth Version
- Bluetooth 5.2
- against Bluetooth 5.0
- Resistance Features
- IP68, IP69K, IP69, Drop Resistant Up to 2 m, MIL-STD-810H
- against IP64, MIL-STD-810H
- Expandable Storage
- Yes
- against No
- Rugged Build
- Yes
- against No
vivo Y39, if you care about…
- Battery Capacity
- 6,500 mAh
- against 6,050 mAh
- AnTuTu Score
- 456,552
- against 406,666
- Peak Display Brightness
- 1,000 nits
- against 800 nits
- Weight
- 205 g
- against 306 g
Specification comparison
Performance
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Processor Model | MediaTek Dimensity 6300 | Qualcomm Snapdragon 4 Gen 2 |
| Processor Process Size | 6 nm | 4 nm Best value |
| Graphics GPU | Mali-G57 MC2 | Qualcomm Adreno 613 |
| Storage Type | UFS 2.2 | UFS 2.2 |
| Maximum CPU Clock | 2.4 GHz Best value | 2.2 GHz |
| Maximum Storage Capacity | 256 GB | 256 GB |
| AnTuTu Score | 406,666 | 456,552 Best value |
| Geekbench 6 Single-Core | 782 | — |
| Geekbench 6 Multi-Core | 2,012 | — |
| CPU Description | Octa-core CPU with 2 Cortex-A76 cores at 2.4 GHz and 6 Cortex-A55 cores at 2.0 GHz. | Octa-core CPU with 2x2.2 GHz Cortex-A78 and 6x1.95 GHz Cortex-A55 |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 8 GB | 8 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | v10 | v10 |
Design
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Body Colors | Black, Green, Orange | Purple, Blue |
| Body Thickness | 13.7 mm | 8.3 mm Best value |
| Body Width | 82 mm | 76.3 mm |
| Body Height | 173.8 mm | 165.7 mm |
| Weight | 306 g | 205 g Best value |
| Usable Surface | 72.5 % | 84.9 % Best value |
| Body Materials | Polycarbonate | Glass, Plastic |
| Resistance Features | IP68, IP69K, IP69, Drop Resistant Up to 2 m, MIL-STD-810H Best value | IP64, MIL-STD-810H |
| Waterproof Depth | 1.5 m | — |
| Drop Resistance Class | A | — |
| Repairability Class | C | — |
| Rugged Build | Yes Best value | No |
| Drop Test Count | 270 | — |
Battery
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Battery Efficiency Rating | A | — |
| Battery Capacity | 6,050 mAh | 6,500 mAh Best value |
| Battery Type | Li-Polymer | Si-Carbon Li-Ion Best value |
| Fast Charge Power | 18 W | 44 W Best value |
| Battery Features | Fast Charging, Reverse Charging, Non-Removable, Battery Level Indicator, Rechargeable | Fast Charging, Reverse Charging, Non-Removable, Battery Level Indicator, Charger Included, Rechargeable |
| Battery Endurance | 81 h 30 min | — |
| Charge cycles | 1,000 | — |
Display
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | IPS LCD | IPS LCD |
| Peak Display Brightness | 800 nits | 1,000 nits Best value |
| Display Diagonal | 6.56″ | 6.68″ Best value |
| Display Horizontal Resolution | 720 px | 720 px |
| Display Vertical Resolution | 1,612 px Best value | 1,608 px |
| Display Pixel Density | 269 ppi Best value | 264 ppi |
| Display Refresh Rate | 120 Hz | 120 Hz |
| Touch Sampling Rate | 240 Hz | — |
| Display Contrast Ratio | — | 1,500 :1 |
| Display Features | Gorilla Glass 5, Mohs Level 4, Hole-Punch Notch, Scratch Resistant, Capacitive Touch, Multi-Touch | Hole-Punch Notch, SGS Certified, Color LED Notifications, Scratch Resistant, Capacitive Touch, Frameless |
Sensors
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Fingerprint Sensor Placement | Side | Side |
Sensor
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, Thermometer Sensor | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Cooling System |
Software
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Operating System | Android 14 | Android 15 |
| OS Family | Android | Android |
| OS Version | 14 | 15 Best value |
| OS Update Support | — | 1 year |
| Google Services | Yes | Yes |
Connectivity
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS 800, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B6, 3G UMTS B8, 3G UMTS B19, 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 B18, 4G LTE B19, 4G LTE B20, 4G LTE B25, 4G LTE B26, 4G LTE B28A, 4G LTE B28B, LTE B28, 4G LTE B32, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B66, 4G LTE B71, 5G NR n1, 5G NR n2, 5G NR n3, 5G NR n5, 5G NR n7, 5G NR n8, 5G NR n20, 5G NR n25, 5G NR n28a, 5G NR n28b, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n66, 5G NR n71, 5G NR n77, 5G NR n78, 5G NR n79 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B2, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B18, 4G LTE B19, 4G LTE B20, 4G LTE B26, 4G LTE B28A, 4G LTE B28B, 4G LTE B34, 4G LTE B38, 4G LTE B40, 4G LTE B41, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n7, 5G NR n8, 5G NR n20, 5G NR n28a, 5G NR n28b, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n77, 5G NR n78 |
| Cellular Technologies | GSM, CDMA, HSPA, LTE, 5G | GSM, HSPA, UMTS, LTE, 5G |
| Wi-Fi Standards | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 802.11a/b/g | Wi-Fi 802.11a/b/g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.2 Best value | Bluetooth 5.0 |
| Bluetooth Profiles | A2DP, LE | A2DP, LE, EDR, HID |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou, QZSS, Galileo, NavIC Best value | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| Connectivity Features | 3.5 mm Audio Jack, Infrared, NFC, FM Radio, Computer Sync, OTA Sync, Tethering, VoLTE, VoNR, USB Charging, USB Mass Storage, USB Host 2.0, USB OTG, USB Type-C | USB Charging, USB Mass Storage, USB OTG, USB Host 2.0, USB Type-C, NFC, 3.5 mm Audio Jack, Computer Sync, OTA Sync, Tethering, Infrared, VoLTE, VoWiFi, USB 2.0 |
| USB Version | USB 2.0 | USB 2.0 |
| SAR American Head | — | 0.99 W/kg |
| SAR American Body | — | 0.98 W/kg |
| Max. download speed | 3,300 Mbps Best value | 2,500 Mbps |
| Max. upload speed | — | 900 Mbps |
Audio
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Audio Features | A2DP, LE, Loudspeaker | Stereo Speakers, Hi-Res Audio, DTS, DTS:X Best value |
Technical
| Specification | Armor X31 Pro | Y39 |
|---|---|---|
| Model numbers | — | V2443, V2436 |
