esto es lo que pone como informacion del Mi4 en minideal:
te he puesto en rojo las bandas que lleva...¿verdad o mentira? eso ya no lo sé. pregunta y que te lo confirmen en minideal
Xiaomi Mi4 Smartphone Basic Information
Model
Xiaomi Mi4
Band
2G: GSM 850/900/1800/1900MHz
3G: WCDMA 850/900/1900/2100MHz
Sim Card Single Micro-SIM Card Single Standby
Service Provide Unlocked
Style Bar
Color black
Shell Material Alloy
OS MIUI V5(based on Android 4.4.3)
CPU Qualcomm Snapdragon 801 Quad-core 2.5GHz
ROM 16GB
RAM 3GB
Display Size 5.0 Inch
Type SHARP JDI screen, capacitive screen
Resolution 1920 x 1080 pixels FHD screen, 441PPI
Camera Dual Cameras, Front Camera: 8.0MP Sony camera, 5P lens; f/1.8, face beauty, etc
Back camera: 13.0MP Sony Lens, f/1.8, Blue glass infrared filter
Smart LED Flashlight, HDR, Panorama, face detection, etc
Support 4K UHD video recording
Xiaomi Mi4 Mobile Phone Basic Function
Ringtones Type Polyphonic/MP3
Audio File Format MP3/WAV/AMR/AWB
Video File Format 3GP/MPEG4
Image File Format JPEG/BMP/GIF/PNG/GIF
E-book Format TXT/CHM/DOC/HTML
FM Radio Yes, earphone needed
Earphone Port 3.5mm
Data transfer USB/Bluetooth
Mobile internet WAP/WiFi
Message SMS/MMS
Input Handwrite/Keypad
GPS Yes, built in,also support GPS, A-GPS & GLONASS
WIFI Yes
Bluetooth Yes,V4.0, Bluetooth HID
Gravity Sensor Yes
Standby Time About 280hours
Language mulit-lanuage
Other Feature 4G, 3G, WIFI, GPS, FM, Bluetooth, Ebook, Email, Messaging, wallpapers, calendar, calculator, clock, camera,
tethering & portable hotspot, Play Store, etc
Xiaomi Mi4 Smartphone Size: 139.2 x 68.5 x 8.9mm/5.48 x 2.69 x 0.35 inch(2.63mm narrow bezel)
Xiaomi Mi4 Smartphone Weight: 149g
Xiaomi Mi4 Mobile Phone Accessories:
1 x 3080mAh Battery
1 x USB Cable
1 x Charger
1 x User Manual