Nokia 6788i
| Type | Slide |
| Dimensions | 105.60 x 54.90 x 18.90 mm |
| Weight | 158.00 g |
| Display size | 2.80" |
| Display | Color / TFT 16M colors 240 x 320 px (2.80") 143 ppi |
| Display protection |   |
| Additional display | |
| Protection of the secondary display | |
| Talk time (max.) | 2G: 200 min. (3.3 h) 3G: 250 min. (4.2 h) |
| Video talk time (max.) | 150 min. (2.5 h) |
| Stand-by (max.) | 2G: 200 h. (8.3 days) 3G: 210 h. (8.8 days) |
| Playback time (max.) | Audio: 15 h (0.6 days) Video: 6 h (0.3 days) |
| Standard battery | Li-Ion 1200 mAhBuy powerbank
|
| Quick battery charging | |
| Wireless battery charging | |
| Internal memory | 4 GB |
| RAM memory | 128 MB |
| Memory cards |  microSD, microSDHC up to 8 GBBuy memory card |
| Operating system | Symbian 9.3 |
| Interface | Series 60 3rd Edition |
| Processor | ARM9 |
| Processor clock | 264 MHz |
| GPU | - |
| Touchscreen | |
| SAR (10g) | 0,37 W/kg |
| DualSIM | |
| Announced | 2Q 2010 |
| Other names | - |
| GSM frequencies | 900 1800 1900 |
| UMTS | |
| LTE standard | |
| CDMA | |
| Standard TD-SCDMA | 1900 2000 |
| UMA | |
CAMERAS - BACK
| First camera | |
| Photo matrix | 5 Mpx |
| Resolution | 2592x1944 px |
| Optical zoom | |
| Digital zoom | 3x |
| Flash | 2x LED |
| Dual-colour LED flash | |
| Video resolution | 640x480 px |
| Video formats | MPEG4, H.263, H.264 - 30 fps |
| Additional | AF, EIS |
CAMERAS - FRONT
| First camera | |
| Photo matrix | 0.3 Mpx |
| Resolution | 640x480 px |
| Optical zoom | |
| Flash | |
| Dual-colour LED flash | |
| Video formats | MPEG4, H.263, H.264 - 30 fps |
| Additional | - |
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 | |
| WIMAX+ | |
| GPRS | class 10 |
| EDGE | class 10 |
| Bluetooth | v2.0 EDR |
| A2DP Profile | |
| HDMI | |
| WiFi | |
| WiFi frequencies | |
| WiFi Direct | |
| WiFi Display | |
| DLNA | |
| Miracast | |
| WiFi hotspot | |
| IrDA | |
| USB | v2.0 |
| GPS | |
| A-GPS | |
| Beidou | |
| NFC | |
COMMUNICATION AND MESSAGING
| Call waiting | |
| Conferency | |
| Call forwarding | |
| Push To Talk | |
| Instant Messenger | |
| SMS | |
| EMS | |
| MMS | v1.2 |
| Dictionary | T9 |
| Swype | |
| e-mail client | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | |
| RSS Reader | |
Multimedia
| Radio | z RDS |
| MP3 | |
| Stereo speakers | |
| Audio Jack | 3.5 mm |
| HD Voice | |
| Sound formats | AAC, AAC+, WMA, eAAC+ |
| Polyphony | 64 voices |
| Video ringtone | |
| Ring composer | |
| Games | |
| Java | MIDP 2.1 |
| Videophone | |
| DVB-H television | |
| TV-Out | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | |
| Stopwatch | |
| Alarm | |
| Calculator | |
| Currency converter | |
| Organizer | |
| Calendar | |
| Flight mode | |
| SyncML | v1.2 |
| Data and fax | |
| Themes | |
| Interchangeable covers | |
| Speakerphone | |
| Recorder | |
| Vibrations | |