Meizu Note 21 vs Redmi Turbo 4
| Type | Touch | Touch |
| Waterproofness & dust-resistance |  | IP68 |
| Dimensions | 167.80 x 77.40 x 9.10 mm | 160.95 x 75.24 x 8.06 mm |
| Weight | | 203.50 g |
| Display size | 6.74" | 6.67" |
| Display | Color / IPS TFT 16,7M colors 90 Hz 720 x 1600 px (6.74") 260 ppi | Color / OLED 68,7G colors 120 Hz 1220 x 2712 px (6.67") 446 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 4G: 2316 min. (38.6 h) | |
| Stand-by (max.) | 4G: 456 h. (19.0 days) | |
| Playback time (max.) | Video: 10,8 h (0.4 days) | nd |
| Standard battery | Li-Po 6000 mAhBuy powerbank
| Li-Po 6550 mAhBuy powerbank
|
| Quick battery charging |  | USB Power Delivery 3.0 |
| Wireless battery charging | | |
| Internal memory | 256 GB | 256 GB, 512 GB |
| RAM memory | 4 GB, 8 GB | 12 GB, 16 GB |
| Memory cards | microSD, microSDHC, microSDXC | |
| Operating system | Android 14 | Android 15 |
| Interface | Flyme | HyperOS 2 |
| Processor | Unisoc Tiger T606 UMS9230 T7200 | MediaTek Dimensity 8400 |
| Processor clock | 1600 MHz | 3250 MHz |
| GPU | Mali-G57 MP1 @650 MHz | ARM Mali-G720 MC7 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | nd | dual standby |
| Hybrid DualSIM | nd | |
| Announced | 3Q 2024 | 1Q 2025 |
| Other names | M41H | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 |
| UMTS | 850 900 1900 2100 | 850 900 1700 2100 |
| LTE standard | | FDD LTE: 2100, 1800, 1700, 900, 850, 700 TDD LTE: 3500, 2600, 2500, 2300, 2000, 1900 |
| Standard 5G | | FDD 5G: 2100, 1800, 1700, 900, 850, 700 TDD 5G: 3700, 3500, 2600, 2500, 2300 |
| CDMA | | 850 |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | Standard |
| Photo sensor model | | Sony LYT600 |
| Photo matrix | 50 Mpx | 50 Mpx |
| Sensor size | | 1/1,953 |
| Pixel size | | 0,8 µm |
| Resolution | | 8192x6144 px |
| Optical zoom | | |
| Number of lenses | | 6 |
| Flash | LED | 2x LED |
| Dual-colour LED flash | | 1+1 |
| Video resolution | | 3840x2160 px |
| Video formats | H.264, H.265, MPEG4 | H.264, H.265, MPEG4 |
| Additional | AF | AF, EIS, OIS, f/1.5 |
| Second camera | | |
| Camera type | Depth of field | Wide-angle |
| Photo matrix | 2 Mpx | 8 Mpx |
| Optical zoom | | |
| Flash | LED | 2x LED |
| Dual-colour LED flash | | 1+1 |
| Additional | FF | FF |
CAMERAS - FRONT
| First camera | | |
| Camera type | Portrait | Portrait |
| Photo sensor model | | OmniVision OV20B |
| Photo matrix | 8 Mpx | 20 Mpx |
| Sensor size | | 1/4 |
| Optical zoom | | |
| Number of lenses | | 4 |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | | 1920x1080 px |
| Additional | FF | FF, 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 | 42.20 Mbit/s | 42.20 Mbit/s |
| HSUPA | 5.76 Mbit/s | 11.52 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | |
| LTE UP | - | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.0 | v6.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac/ax |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 Type-C | v2.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| 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 | | |
| MP3 | | |
| Stereo speakers | | 2 |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, MID, WAV, eAAC+ | AAC, AAC+, AMR, AWB, FLAC, MID, OGG, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| 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 | | |