Lenovo A7-50 A3500 Android big problem not work not heard reset preview video



The tablet is not difficult to correct me if you have any solution to this tablet is definitely telling me to wait for your answer Please solution would be to tell me how I solve this problem۔۔۔۔
NETWORK Technology
GSM / HSPA
LAUNCH Announced 2014, April
Status Available. Released 2014, June
BODY Dimensions 198 x 121.2 x 9.9 mm (7.80 x 4.77 x 0.39 in)
Weight 320 g (11.29 oz)
SIM Micro-SIM
DISPLAY Type IPS LCD capacitive touchscreen, 16M colors
Size 7.0 inches (~59.2% screen-to-body ratio)
Resolution 800 x 1280 pixels (~216 ppi pixel density)
Multitouch Yes
PLATFORM OS Android OS, v4.2.2 (Jelly Bean), upgradable to v4.4.2 (KitKat)
Chipset Mediatek MT8382
CPU Quad-core 1.3 GHz Cortex-A7
GPU Mali-400MP2
MEMORY Card slot microSD, up to 32 GB (dedicated slot)
Internal 8/16 GB, 1 GB RAM
CAMERA Primary 5 MP
Features Geo-tagging
Video Yes
Secondary 2 MP
SOUND Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
COMMS WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth v4.0
GPS Yes, with A-GPS
Radio FM radio
USB microUSB v2.0
FEATURES Sensors Accelerometer, proximity
Messaging SMS(threaded view), MMS, Email, Push Mail, IM
Browser HTML
Java No
- MP3/WAV/WMA/AAC player
- MP4/H.264 player
- Document viewer
- Photo viewer/editor
BATTERY Non-removable Li-Ion 3450 mAh battery

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