Sony Ericsson K550i vs Nokia 6303i classic
| Type | Bar (classic) | Bar (classic) |
| Dimensions | 102.00 x 46.00 x 14.00 mm | 108.80 x 46.20 x 11.70 mm |
| Weight | 95.00 g | 96.00 g |
| Display size | 1.96" | 2.20" |
| Display | Color / TFD 256k colors 176 x 220 px (1.96") 144 ppi | Color / TFT 16M colors 240 x 320 px (2.20") 182 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 420 min. (7.0 h) | 2G: 480 min. (8.0 h) |
| Stand-by (max.) | 2G: 350 h. (14.6 days) | 2G: 515 h. (21.5 days) |
| Standard battery | Li-Po 950 mAhBuy powerbank
| Li-Ion 1050 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 1000 places | 2000 places |
| Internal memory | 64 MB | 55 MB |
| Memory cards |  Memory Stick Micro (M2) up to 2 GBBuy memory card | microSD, microSDHC up to 8 GBBuy memory card |
| Operating system | SE A100 | Nokia OS |
| Interface | - | Series 40 6th Edition |
| Touchscreen | | |
| SAR (10g) |  | 1,11 W/kg |
| DualSIM | | |
| Announced | 1Q 2007 | 1Q 2010 |
| Other names | K550; Li | - |
| GSM frequencies | 850 900 1800 1900 | 900 1800 1900 |
| UMTS | | |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 2 Mpx | 3.2 Mpx |
| Resolution | 1600x1200 px | 2048x1536 px |
| Optical zoom | | |
| Digital zoom | 2,2x | 4x |
| Flash | LED | 2x LED |
| Dual-colour LED flash | | |
| Video resolution | 176x144 px | 320x240 px |
| Video formats | H.263, MPEG4 | MPEG4, H.263 - 8 fps |
| Additional | - | - |
CAMERAS - FRONT
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 | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | class 10 | class 32 |
| EDGE | class 10 | class 32 |
| Bluetooth | v2.0 | v2.1 EDR |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | |
| WiFi frequencies | | |
| 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 | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | z RDS | z RDS |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | 3GPP, AAC, AAC+, AMR, M4A, MIDI, MXMF, RHZ, RA8, WAV, WMA, XMF, eAAC+ | AAC, AAC+, AMR, WAV, WMA, eAAC+ |
| Polyphony | 72 voices | 64 voices |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 2.0 | 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 | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |