Ulefone Armor X31 vs Ulefone Armor X13
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP68, IP69K | IP68, IP69K |
| Dimensions | 173.78 x 82.00 x 13.65 mm | 173.00 x 83.00 x 13.55 mm |
| Weight | 305.50 g | 300.00 g |
| Display size | 6.56" | 6.52" |
| Display | Color / IPS TFT 16,7M colors 90 Hz 720 x 1612 px (6.56") 269 ppi | Color / IPS TFT 16M colors 60 Hz 720 x 1600 px (6.52") 269 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 4G: 2040 min. (34.0 h) | 4G: 1740 min. (29.0 h) |
| Stand-by (max.) | 4G: 336 h. (14.0 days) | 4G: 294 h. (12.3 days) |
| Playback time (max.) | Audio: 25 h (1.0 days) Video: 8 h (0.3 days) | Video: 13 h (0.5 days) |
| Standard battery | Li-Po 6050 mAhBuy powerbank
| Li-Po 6320 mAhBuy powerbank
|
| Quick battery charging | USB Power Delivery | |
| Wireless battery charging | | |
| Internal memory | 128 GB | 64 GB |
| RAM memory | 6 GB | 6 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 2000 GBBuy memory card | microSD, microSDHC, microSDXC up to 256 GBBuy memory card |
| Operating system | Android 14 | Android 13 |
| Processor | MediaTek Helio G91 MT6769K | MediaTek Helio G36 MT6765X |
| Processor clock | 2000 MHz | 2200 MHz |
| GPU | ARM Mali-G52 MC2 | IMG PowerVR GE8320 @680 MHz |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | nanoSIM, microSD | |
| Announced | 1Q 2025 | 3Q 2023 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1700 1900 2100 | 850 900 1700 1900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1900, 1800, 1700, 1500, 900, 850, 800, 700, 600 TDD LTE: 2600, 2500, 2300, 2100, 1900 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300, 2100, 1900 |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | Standard |
| Photo sensor model | OmniVision OV48B | Samsung S5KJN1 |
| Photo matrix | 48 Mpx | 50 Mpx |
| Sensor size | 1/2,25 | 1/2,76 |
| Pixel size | 0,801 µm | 0,64 µm |
| Resolution | 8032x6032 px | 8160x6144 px |
| Optical zoom | | |
| Number of lenses | 6 | 5 |
| Field of view | 79 ° | 79 ° |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 2560x1080 px | 1920x1080 px |
| Video formats | H.264, H.265, MPEG4 - 30 fps | H.264, MPEG4 - 30 fps |
| Additional | AF, f/1.8 | AF, f/1.8 |
| Second camera | | |
| Photo sensor model | Sony IMX350 | OmniVision OV24A1B |
| Photo matrix | 20 Mpx | 24 Mpx |
| Sensor size | 1/2,78 |  |
| Pixel size | 1 µm | |
| Resolution | 5184x3880 px | |
| Optical zoom | | |
| Field of view | 77 ° | 78 ° |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | | H.264, MPEG4 - 30 fps |
| Additional | FF, f/1.8 | FF, f/1.8 |
| Third camera | | |
| Camera type | Macro | nd |
| Photo sensor model | OmniVision OV02B | nd |
| Photo matrix | 2 Mpx | nd |
| Sensor size | 1/5 | nd |
| Pixel size | 1,75 µm | nd |
| Resolution | 1600x1200 px | nd |
| Optical zoom | | nd |
| Flash | LED | nd |
| Dual-colour LED flash | | nd |
| Additional | FF, f/2.4 | nd |
| Fourth camera | | |
| Photo sensor model | Samsung S5K3P8 | nd |
| Photo matrix | 16 Mpx | nd |
| Sensor size | 1/3,1 | nd |
| Pixel size | 1 µm | nd |
| Resolution | 4640x3488 px | nd |
| Optical zoom | | nd |
| Number of lenses | 5 | nd |
| Field of view | 73 ° | nd |
| Flash | | nd |
| Dual-colour LED flash | | nd |
| Additional | f/2.25 | nd |
CAMERAS - FRONT
| First camera | | |
| Camera type | nd | Portrait |
| Photo sensor model | nd | GalaxyCore GC08A3 |
| Photo matrix | nd | 8 Mpx |
| Resolution | nd | 3264x2448 px |
| Optical zoom | nd | |
| Number of lenses | nd | 4 |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video resolution | nd | 1920x1080 px |
| Video formats | nd | H.264, MPEG4 - 30 fps |
| Additional | nd | FF, f/2.0 |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 42.20 Mbit/s | 42.20 Mbit/s |
| HSUPA | 11.52 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.2 | v5.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 Type-C | v2.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, FLAC, MID, MKA, OGG, WAV, eAAC+ | AAC, AAC+, AMR, MID, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |