Oppo K13x 5G vs Redmi K40
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP65 | |
| Dimensions | 165.71 x 76.24 x 7.99 mm | 163.70 x 76.40 x 7.80 mm |
| Weight | 194.00 g | 196.00 g |
| Display size | 6.67" | 6.67" |
| Display | Color / IPS TFT 16,7M colors 120 Hz 720 x 1604 px (6.67") 264 ppi | Color / AMOLED 16M colors 120 Hz 1080 x 2400 px (6.67") 395 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
| Corning Gorilla Glass Buy screen protector
|
| Additional display | ||
| Protection of the secondary display | ||
| Standard battery | Li-Po 6000 mAhBuy powerbank
| Li-Po 4520 mAhBuy powerbank
|
| Quick battery charging | SuperVOOC | Quick Charge 3.0 |
| Wireless battery charging | ||
| Internal memory | 128 GB | 128 GB, 256 GB |
| RAM memory | 4 GB, 6 GB, 8 GB | 6 GB, 8 GB, 12 GB |
| Memory cards | microSD, microSDHC, microSDXC | |
| Operating system | Android 15 | Android 11 |
| Interface | ColorOS 15.0.1 | MIUI 12 |
| Processor | MediaTek Dimensity 6300 MT6835T | Qualcomm Snapdragon 870 SM8250 |
| Processor clock | 2400 MHz | 3200 MHz |
| GPU | ARM Mali-G57 MC2 | Adreno 650 |
| Touchscreen | ||
| SAR (10g) | 1,184 W/kg | |
| DualSIM | ||
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | nanoSIM, microSD | |
| Announced | 2Q 2025 | 1Q 2021 |
| Other names | CPH2735 | M2012K11AC; Xiaomi Redmi K40 |
| GSM frequencies | 900 1800 | 850 900 1800 1900 |
| UMTS | 900 2100 | 850 900 1700 1900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 900, 850, 700 TDD LTE: 2500, 2300 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 700 TDD LTE: 3500, 2600, 2500, 2300, 2100, 1900 |
| Standard 5G | FDD 5G: 2100, 1800, 900, 850, 700 TDD 5G: 3700, 3500, 2500, 2300 | FDD 5G: 2100, 1800, 700 TDD 5G: 3700, 3500, 2500 |
| CDMA | ||
| Standard TD-SCDMA | ||
| UMA |

