BenQ-Siemens EF81 vs CryptoPhone 100
| Type | Clamshell | Touch |
| Dimensions | 94.00 x 51.00 x 15.90 mm | 129.00 x 73.00 x 18.00 mm |
| Weight | 110.00 g | 193.00 g |
| Display size | 2.20" | - |
| Display | Color / TFT 256k colors 240 x 320 px (2.20") 182 ppi | Color / TFT 4k colors 240 x 320 px |
| Display protection | ||
| Additional display | Color / TFT 256k colors 120 x 160 px (1.30") | |
| Protection of the secondary display | ||
| Talk time (max.) | 2G: 270 min. (4.5 h) 3G: 210 min. (3.5 h) | 2G: 210 min. (3.5 h) |
| Stand-by (max.) | 2G: 300 h. (12.5 days) 3G: 250 h. (10.4 days) | 2G: 150 h. (6.3 days) |
| PDA mode work time | nd | 18 h (0.8 days) |
| Standard battery | Li-Ion 950 mAhBuy powerbank
| Li-Po 1500 mAhBuy powerbank
|
| Quick battery charging | ||
| Wireless battery charging | ||
| Phonebook memory | 1000 places | |
| Internal memory | 64 MB | 32 MB |
| RAM memory | 64 MB | |
| Memory cards | microSD up to 1 GBBuy memory card | SD, MMC |
| Operating system | - | MS Windows Mobile 2002 |
| Processor | Qualcomm MSM6250 | StrongARM |
| Processor clock | 180 MHz | 206 MHz |
| GPU | - | - |
| Touchscreen | ||
| SAR (10g) | 0,37 W/kg | |
| DualSIM | ||
| Other names | - | - |
| GSM frequencies | 900 1800 1900 | 900 1800 |
| UMTS | 2100 | |
| LTE standard | ||
| CDMA | ||
| Standard TD-SCDMA | ||
| UMA |

