Hi, the title says it. I'm trying to push an apk into /system/app but it returns"no space left on device" so I ran a df and it showed me that all partitions have free space except for the system. My device is a boyue rk3026 running Android 4.2.

I'd appreciate if you could help me with this issue.
Hi amin021023.

Sadly there isn't an easy way to extend system partition without breaking your device. You'll need to delete other applications that you installed before.
I see, but I only have a simple e-ink launcher and the pocket app and kinguser other than the apps that come with the device when I hit adb shell pm list packages -f

There are 2 apps that I think I could remove, one is a Bluetooth which I don't know why they put it there because my device doesn't even have Bluetooth... And the other is gmail (I could access my emails through browser)
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I solved it by backing up the apps then removing them, so far so good.