I have successfully downloaded Google Play store, but I'm not able to download apps of Google Play in HCL ME U1 through 3G dongle. Does it require only WiFi?
The installation of applications has nothing to do with your connection. The fact is that the tablet has low compatibility with programs you want to install.
On the other hand, many users reported that after installing Fix Permissions application, everything worked well. Note: The tablet needs root in order to use the mentioned software.