TP-Link Neffos X9 vs Xiaomi Redmi 4X
| Type | Touch | Touch |
| Dimensions | 159.47 x 76.31 x 7.85 mm | 139.24 x 69.96 x 8.65 mm |
| Weight | 168.00 g | 150.00 g |
| Display size | 5.99" | 5.00" |
| Display | Color / IPS TFT 16M colors 720 x 1440 px (5.99") 269 ppi | Color / IPS TFT 16M colors 720 x 1280 px (5.00") 294 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Standard battery | Li-Ion 3060 mAhBuy powerbank
| Li-Ion 4100 mAhBuy powerbank
|
| Quick battery charging | Fast Charging | |
| Wireless battery charging | | |
| Internal memory | 32 GB, 64 GB | 16 GB, 32 GB, 64 GB |
| RAM memory | 3 GB, 4 GB | 2 GB, 3 GB, 4 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 128 GBBuy memory card | microSD, microSDHC, microSDXC up to 128 GBBuy memory card |
| Operating system | Android 8.1 Oreo | Android 6.0.1 Marshmallow |
| Interface | - | MIUI 8 |
| Processor | MediaTek MT6750 | Qualcomm Snapdragon 435 8940 |
| Processor clock | 1500 MHz | 1400 MHz |
| GPU | ARM Mali-T860 MP2 @520 MHz | Adreno 505 |
| Touchscreen | | |
| SAR (10g) |  | 1,5 W/kg |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(microSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | | microSIM, microSD |
| Announced | 3Q 2018 | 1Q 2017 |
| Other names | TP913A | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 900 1700 1900 2100 | 850 900 1900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800 | FDD LTE: 2600, 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300, 1900 |
| CDMA | | 850 1900 CDMA2000 1X |
| Standard TD-SCDMA | | 1900 2000 |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo sensor model | | Samsung S5K3L8 |
| Photo matrix | 13 Mpx | 13 Mpx |
| Resolution | | 4208x3120 px |
| Optical zoom | | |
| Flash | 2x LED | LED |
| Dual-colour LED flash | 1+1 | |
| Video resolution | 1920x1080 px | 1920x1080 px |
| Video formats | MPEG4, H.263, H.264 - 30 fps | MPEG4, H.264, H.265 - 30 fps |
| Additional | AF, f/2.0 | AF, f/2.0 |
| Second camera | | |
| Photo matrix | 5 Mpx | nd |
| Optical zoom | | nd |
| Flash | 2x LED | nd |
| Dual-colour LED flash | 1+1 | nd |
| Video formats | MPEG4, H.263, H.264 - 30 fps | nd |
| Additional | - | nd |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 8 Mpx | 5 Mpx |
| Resolution | | 2592x1944 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | MPEG4, H.263, H.264 - 30 fps | MPEG4, H.264, H.265 - 30 fps |
| Additional | - | f/2.2 |
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 | | |
| EDGE | | |
| Bluetooth | v4.1 | v4.2 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | XT9 | XT9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | 3GP, AAC, AMR, AWB, FLAC, IMY, M4A, MP4, OGA, OGG, OTA, RTTTL, RTX, WAV, XMF | AAC, AAC+, AMR, FLAC, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Java | ART | 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 | | |