OnePlus Ace 5 Ultra vs HTC Desire 21 Pro 5G
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP65 | |
| Dimensions | 163.41 x 77.04 x 8.10 mm | 167.10 x 78.10 x 9.40 mm |
| Weight | 206.00 g | 205.00 g |
| Display size | 6.83" | 6.70" |
| Display | Color / AMOLED 1,07G colors 144 Hz 1272 x 2800 px (6.83") 450 ppi | Color / IPS TFT 16M colors 90 Hz 1080 x 2400 px (6.70") 393 ppi |
| Display protection | ||
| Additional display | ||
| Protection of the secondary display | ||
| Standard battery | Si-Car 6700 mAhBuy powerbank
| Li-Ion 5000 mAhBuy powerbank
|
| Quick battery charging | Quick Charge 4.0+ | |
| Wireless battery charging | ||
| Internal memory | 256 GB, 512 GB, 1000 GB | 128 GB |
| RAM memory | 12 GB, 16 GB | 8 GB |
| Memory cards | microSD, microSDHC, microSDXC | |
| Operating system | Android 15 | Android 10 |
| Interface | ColorOS 15.0 | - |
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 690 |
| Processor clock | 3730 MHz | 2000 MHz |
| GPU | ARM Immortalis-G925 | Adreno 619L |
| Touchscreen | ||
| DualSIM | ||
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | ||
| Announced | 2Q 2025 | 1Q 2021 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 | 850 900 1800 1900 |
| UMTS | 850 900 1700 2100 | 850 900 1900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 1700, 900, 850, 700 TDD LTE: 3600, 3500, 2600, 2500, 2300, 2100, 1900 | FDD LTE: 2600, 2100, 1800, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300, 1900 |
| Standard 5G | FDD 5G: 2100, 1800, 900, 850, 700 TDD 5G: 3700, 3500, 2600, 2500, 2300 | FDD 5G: 2600, 2100, 1800, 850, 700 TDD 5G: 3500, 2500 |
| CDMA | ||
| Standard TD-SCDMA | ||
| UMA |

