Symphony W21 3g Official firmware (Flash file)
This File is 100% Tested by KHUSHI TELECOM original Symphony W21Official firmware (Flash file), You can easily Download from our link. Giving you fresh Firmware Download link. There is a short Description of your important File.
Hardware info: Cpu: MT 6572_S00, Operating System: Android OS v4.4.2 KitKat, CPU:1.3 GHz Dual Core, Memory: Card Slot: microSD up to 32 GB, Interanl[ROM]: 512 MB ( User available 120 MB), RAM: 256 MB (Use 104 MB), Camera: Primary: 1.3 MP, Secondary: 0.3 MP.

Below the direct link to download the Symphony W21 Firmware (flash file) from mega storage.Downloaded file contains the firmware file, flash tool & Driver.
Download Here

Important Notes:[*] Take a Backup of your smartphone data before flashing, upgrading or instaling the firmware on your smartphone. This Backup can help you to recover the personal data whenever any thing wrong happens.

How to to flash stock rom using by Sp flash tool 
For more info or face any problem please contact me on-
Facebook fanpage: facebook.com/khushitelecom
My personel Facebook: facebook.com/laninimtiaz
Subscribe my Youtube: youtube.com/c/GsmLanin1
Follow on Twitter: twitter.com/khushi_telecom
we are trying to give our best but use this at your risk, We don,t responsible if there will be something get wrong with you.Thanks for choosing US & All the best.

You may also like:
Micromax A093 Canvas Fire Official Firmware (Flash file)
LAVA IRIS X1+ Official Firmware (flash file)