Doogee S51 vs E-TEN M550
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP68, IP69K | |
| Dimensions | 167.40 x 81.40 x 14.60 mm | 111.70 x 60.70 x 22.00 mm |
| Weight | 266.00 g | 165.00 g |
| Display size | 6.00" | 2.80" |
| Display | Color / IPS TFT 16M colors 60 Hz 720 x 1440 px (6.00") 268 ppi | Color / TFT 64k colors 240 x 320 px (2.80") 143 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
| |
| Additional display | ||
| Protection of the secondary display | ||
| Talk time (max.) | 3G: 1440 min. (24.0 h) | 2G: 240 min. (4.0 h) |
| Stand-by (max.) | 3G: 360 h. (15.0 days) | 2G: 200 h. (8.3 days) |
| Standard battery | Li-Ion 5180 mAhBuy powerbank
| Li-Ion 1440 mAhBuy powerbank
|
| Quick battery charging | ||
| Wireless battery charging | ||
| Internal memory | 64 GB | 128 MB |
| RAM memory | 4 GB | 64 MB |
| Memory cards | microSD, microSDHC, microSDXC up to 512 GBBuy memory card | SD, MMC, SDIO |
| Operating system | Android 12 | MS Windows Mobile 5.0 |
| Processor | MediaTek Helio G25 MT6762V | Samsung S3C2440 |
| Processor clock | 2000 MHz | 400 MHz |
| GPU | PowerVR GE8320 @650 MHz | - |
| Touchscreen | ||
| DualSIM | ||
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | nd | |
| Announced | 3Q 2022 | |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1700 1900 2100 | |
| LTE standard | 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 |

