I know the feeling of not being able to install more than a single game in your android (I am talking about HD games) device that is, with all respect, Karbonn ST8 or ST10 if you are reading this article. I searched the internet and found a 100% working solution which I have obviously tried and succeeded.
Follow the following simple steps-
1. Root your device- I know that you may have felt dreary due to the first step Itself, but believe me that it is safe and secure if (and only if) you follow the instructions given –
a)
b) Switch off the device and press volume down button (the one that decreases volume) and the power button together.
c) A blue screen will show up where you can navigate across different options using the volume up and down button.
d) Select -apply update through SD card- and choose Crystal_Root.zip in the screen that follows.
e) Wait for some time and that is it, you have successfully rooted your Device and without any error.
2. Download vold.zip. from here
3. Copy vold.fstab (the file that you get after extraction) and press back in the explorer until you reach the root files. Go To- system-etc and paste vold.fstab in it.
4. Restart your device and viola! You have internal memory equal to the memory of your SD.
Now that is on hell of a reason that will exalt the feeling of buying a bigger memory card in you. I have 16 GB internal memory.
Any questions from your side would meet an agile answer from mine, thus you can freely report any problem or impart your experiences to help others. Good Luck and happy new year(For those who are reading this article in December, never mind if you are not)