I really need more internal space, so I tried several things
1. Pheonix Rom and tick the option to swap memory.
Result: After installation, I reboot, but I got lots of "unfortunately,...." popups just like many people has encountered, I really don't know why and how to solve this
2. nitol (nice and patient guy, thank you) told me I should try agni kernel now, because it ever offer the option in kernel control app. So I did it
Result: After turned on the option "int2ext", I reboot. I can get into system normally, but when I check the storage through setting. The internal space is still 16gb, looked exactly the same as it did before rebooting. The difference is the external sd card is only 10gb left. I think this means the internal space has been successfully set as external one. But my external one is not set as internal one. I also check the folders through ES file, and I found my external sd space is actually is under a folder named "0" under my root.
I don't know why is it like this so can anyone help me?