LG BL40 Chocolate vs LG BL20 Chocolate
| Type | Touch | Slide |
| Dimensions | 127.60 x 50.30 x 10.90 mm | 106.90 x 50.80 x 12.30 mm |
| Weight | 129.00 g | 115.00 g |
| Display size | 4.00" | 2.40" |
| Display | Color / TFT 16M colors 346 x 800 px (4.00") 218 ppi | Color / TFT 256k colors 240 x 320 px (2.40") 167 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 360 min. (6.0 h) 3G: 300 min. (5.0 h) | 2G: 600 min. (10.0 h) 3G: 282 min. (4.7 h) |
| Stand-by (max.) | 2G: 400 h. (16.7 days) 3G: 370 h. (15.4 days) | 2G: 390 h. (16.3 days) 3G: 300 h. (12.5 days) |
| Standard battery | Li-Ion 1000 mAhBuy powerbank
| Li-Ion 900 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 1000 places | 1000 places |
| Internal memory | 336 MB | 130 MB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD, microSDHC up to 8 GBBuy memory card |
| Processor | Qualcomm MSM7200A | - |
| Processor clock | 528 MHz | 184 MHz |
| Touchscreen | | |
| SAR (10g) | 0,842 W/kg | 1,45 W/kg |
| DualSIM | | |
| Announced | 4Q 2009 | 4Q 2009 |
| Other names | KU6300 | New Chocolate |
| GSM frequencies | 900 1800 1900 | 900 1800 1900 |
| UMTS | 2100 | 2100 |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA |  | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 5 Mpx |
| Resolution | 2560x1920 px | 2582x1944 px |
| Optical zoom | | |
| Digital zoom | 4x | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 640x480 px | 320x240 px |
| Video formats | | H.263, MPEG4 - 15 fps |
| Additional | - | - |
CAMERAS - FRONT
| First camera | | |
| Optical zoom | | nd |
| Flash | | nd |
| Dual-colour LED flash | | nd |
| 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 | v2.0 |
| HSCSD | | |
| HSDPA | 7.20 Mbit/s | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | class 12 | class 12 |
| EDGE | class 10 | class 10 |
| Bluetooth | v2.1 | v2.1 EDR |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g | |
| WiFi frequencies | 2,4 GHz | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | v1.2 | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | z RDS | z RDS |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, WAV, WMA | AAC, AAC+, AMR, WAV, WMA, eAAC+ |
| Polyphony | 64 voices | 64 voices |
| Ring composer | | |
| Games | | |
| Java | MIDP 2.1 | MIDP 2.0 |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | v1.1.2 |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |