Panasonic KX-TU550 vs Panasonic KX-TU400
| Type | Clamshell | Clamshell |
| Dimensions | 109.00 x 58.00 x 23.00 mm | 103.00 x 53.00 x 20.00 mm |
| Weight | 110.00 g | 106.00 g |
| Display size | 2.80" | 2.40" |
| Display | Color / TFT 64k colors 240 x 320 px (2.80") 167 ppi | Color / TFT 256k colors 240 x 320 px (2.40") 167 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 444 min. (7.4 h) 3G: 420 min. (7.0 h) 4G: 276 min. (4.6 h) | 2G: 240 min. (4.0 h) |
| Stand-by (max.) | 4G: 300 h. (12.5 days) | 2G: 450 h. (18.8 days) |
| Standard battery | Li-Ion 1400 mAhBuy powerbank
| Li-Ion Buy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Phonebook memory | 2000 places | 300 places |
| Internal memory | 128 MB |  |
| RAM memory | 64 MB | |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD, microSDHC up to 32 GBBuy memory card |
| Operating system | Mocor | - |
| Processor | Unisoc T117 | - |
| Processor clock | 1000 MHz | - |
| GPU | - | - |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | SingleSIM(nanoSIM) | |
| Other names | KX-TU550EX | KX-TU400EXC, KX-TU400EXR, KX-TU400EXG |
| GSM frequencies | 900 1800 | 900 1800 |
| UMTS | 900 2100 | |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 800 TDD LTE: 2600 | |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | |
| Photo matrix | | 0.08 Mpx |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Additional | FF | FF |
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 | |
| HSCSD | | |
| HSDPA | 21.10 Mbit/s | |
| HSUPA | 5.76 Mbit/s | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | |
| LTE UP | 51.00 Mbit/s | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.0 | v3.0 |
| HDMI | | |
| WiFi | | |
| WiFi frequencies | | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v1.1 Type-C | |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | 200 places | |
| EMS | | |
| MMS | | |
| Dictionary | | |
| Swype | | |
| e-mail client | | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | | |
| 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 | | |