Grundig G402i vs Ulefone Gemini Pro
| Type | Slide | Touch |
| Dimensions | 87.00 x 44.00 x 23.00 mm | 155.00 x 76.90 x 8.45 mm |
| Weight | 89.00 g | 181.00 g |
| Display size | - | 5.50" |
| Display | Color / TFT 64k colors 128 x 160 px | Color / IPS TFT 16M colors 1080 x 1920 px (5.50") 401 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 150 min. (2.5 h) |  |
| Stand-by (max.) | 2G: 250 h. (10.4 days) | 2G: 450 h. (18.8 days) |
| Playback time (max.) | nd | Audio: 25 h (1.0 days) Video: 9 h (0.4 days) |
| Standard battery | Li-Ion 700 mAhBuy powerbank
| Li-Ion 3680 mAhBuy powerbank
|
| Quick battery charging | | Pump Express +2.0 |
| Wireless battery charging | | |
| Internal memory | 8 MB | 64 GB |
| RAM memory | | 4 GB |
| Memory cards | |  microSD, microSDHC, microSDXC up to 256 GBBuy memory card |
| Operating system | - | Android 7.1.1 Nougat |
| Processor | - | MediaTek Helio X27 MT6797X |
| Processor clock | - | 2600 MHz |
| GPU | - | ARM Mali-T880 MP4 @875 MHz |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | nanoSIM, microSD |
| Announced | | 2Q 2017 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | | 850 900 1900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1800, 900, 800 TDD LTE: 2600, 2500, 2300, 1900 |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo sensor model | | Sony IMX258 |
| Photo matrix | 0.3 Mpx | 13 Mpx |
| Resolution | 640x480 px | 4128x3096 px |
| Optical zoom | | |
| Digital zoom | 4x | |
| Flash | LED | 4x LED |
| Dual-colour LED flash | | |
| Video formats | | MPEG4, H.263, H.264 |
| Additional | - | f/2.0 |
| Second camera | | |
| Photo sensor model | nd | Sony IMX258 |
| Photo matrix | nd | 13 Mpx |
| Resolution | nd | 4128x3096 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video formats | nd | MPEG4, H.263, H.264 |
| Additional | nd | f/2.0 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 8 Mpx |
| Resolution | nd | 3264x2448 px |
| Optical zoom | nd | |
| Flash | nd | LED |
| Dual-colour LED flash | nd | |
| Video formats | nd | MPEG4, H.263, H.264 |
| Additional | nd | - |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | | v2.0 |
| HSCSD | | |
| HSDPA | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | class 10 | |
| EDGE | | |
| Bluetooth | | v4.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | v802.11 a/b/g/n/ac |
| WiFi frequencies | | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | v2.0 Type-C |
| GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | XT9 |
| Swype | | |
| e-mail client | | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | AMR, MIDI, SMF | AAC, AAC+, AMR, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 1.0 DoJa 1.5 | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |