Here is the Tutorial How to create Virtual Softkey for your Zenfone ( Credit to Gril Leld and Play Sta Tion )
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PS: Zenfone must Root
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1. Install root explorer.
2. In the file system hold build.prop and select "open in text editor"
Note: you should copy/backup the build.prop (to your memory card if something goes wrong)
3. Add this line to
qemu.hw.mainkeys = 0
save it
4. Reboot the machine and enjoy.
DWYOR (Do it With Your Own Risk)
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