The Desire 12 comes loaded with a 5.5-inch HD+ display running at a resolution of 1440×720 pixels and an aspect ratio of 18:9. Under the hood, there is a quad-core MediaTek MT6739 Processor clocked at 1.3GHz. The phone is backed by a 3GB of RAM with 32GB onboard storage. The memory can be further expanded up to 2TB via micro SD card slot.
| Type | HD+, Full View display with 18:9 aspect ratio |
| Resolution | 1440 x 720 pixels |
| Screen Size | 5.5 inches |
| Processor | Quad Core 1.3 GHz, MediaTek MT6739 processor |
| Operating System | Android 8.0, Oreo, HTC Sense |
| RAM | 3 GB |
| Internal Memory | 32 GB |
| Expandable | 2 TB, Micro SD Card Slot |
| Rear Camera | 13 MP, Phase-Detection Autofocus, BSI sensor, f/2.2 aperture, Selfie timer up to 10 seconds, Face detection, HDR mode, Panorama |
| Front Camera | 5 MP, BSI sensor, f/2.4 aperture, Selfie timer up to 10 seconds, HD 720p video recording, Face detection |
| Image Stablizer | No |
| Flash | Yes, LED |
| Video Recording | Yes, 1080p@30fps |
| Design | Bar |
| Size | 148.5 x 70.8 x 8.2 mm |
| Weight | 137 grams |
| Capacity | 2730 mAh, Charging (5V/1.5A) |
| Type | Non Removable |
| Radio | Yes |
| Media Player | Yes, AAC, AAC+, AAC+ Enhanced, OGG Vorbis, WAV, MP3, Midi |
| Video Player | Yes, H.264, H.263, MPEG-4 |
| Network | 2G, 2G/2.5G - GSM/GPRS/EDGE 850/900/1800/1900 MHz; 3G UMTS 850/900/1900/2100 (B1/B2/B5/B8), HSDPA 42, HSUPA 5.76; 4G LTE (#DUGL) FDD: Bands 1, 3, 5, 7, 8, 20 TDD: Bands 40 |
| GSM/CDMA | GSM |
| Bluetooth | 4.2 |
| WiFi | Yes, 802.11 a/b/g/n/ac |
| Internet | EDGE |
| GPS | With A-GPS |
| USB | Micro |
| HDMI | No |
| Headphone Connector | 3.5 mm |
| SIM | Dual |
| NFC | No |
| DLNA | No |
| Sensors | |
| Built in Applications | Yes, Google Play Store, Google Docs, YouTube, Calendar, Calculator, Contacts, FM Radio |
| Warrenty | 1 Year |
| Dustproof | No |
| Shockproof | No |
| Water Resistant | No |
| Keypad | Touchscreen |
| Water Proof | No |