Sony Xperia E3 Dual

users questions

I have Sony Xperia E3 Dual, frequently I receive the warning notifications about storage space to running out and some systems function may not running correct. Other Notification requires to transfer data from internal storage to SD card, but the option can't allow data transmission. So now I can't even update the applications due to lack of enough internal storage space. Please tell me what to do so that I can solve the problem.

I recently buy Sony Xperia E3 Dual D2212. Its Interal Memory 4GB. But In phone Storage that shows nly 1.72GB(2GB). Is it problem of the Phone? And how can I clear this problem?

I saw that E3 Dual has been released in India. Any chance to have it in Europe?