Infinix
Surf Bravo (X503) Specification and Features
DEVICE
NAME
Infinix
Surf Bravo (X503)
GENERAL
DIMENSION
145.7*73.4*9.18
mm (Black)
145.7*73.4*9.25
mm (White)
OPERATING
SYSTEM
Android
4.2.2, Jelly Bean
PROCESSOR
TYPE
1.3 Ghz Dual Core
NETWORK
2G
Yes
3G
Yes
HSPA
Yes
WiFi
Yes
BLUETOOTH
Yes, 3.0
DISPLAY
(SCREEN)
TYPE
5.0” FWVGA Capacitive Touch Screen (HVGA)
MEMORY
ROM
4GB
RAM
1GB
CAMERA
REAR/BACK
5.0MP , AF, BSI
FRONT
0.3MP
MULTIMEDIA
AUDIO
PLAYER
MP3, MIDI, AMR, WAV, AAC
VIDEO
PLAYER
MP4, 3GP,AVI
BATTERY
2000mAh
SENSORS
G-sensor
Light Sensor
Proximity Sensor

the 'back' press button at the bottom of the screen recently stopped responding. is there any remedy?
If the warranty is still in place, it can be replaced. But if not, check out one of their care centers for proper fixing of the problem. Actually, the problem can be fixed.
Can't seem to get the volume up
check on the side of the phone, a button is present, use it to control the volume.
Please Can it handle heavy phone using? Does it freeze or hang when multiple applications are running?
It can handle Multiple application, that is it is involved in multi-tasking and handle lot of application due to the availability of the 1GB RAM
Is it dual or mini sim?
The Infinix Surf Bravo X503 is dual SIM