I bought this mobile last year at very reasonable rate but now its working is very worst because of their processor and speed the only reason behind this is shortage of random access memory.if company is manufacturing this type of product then why don’t they provide all the esentail features of this mobile.the main problem is battery bad the other is hanging problem which is very annoying.random access memory is the very big problem of this phone .i request samsung company to increase the RAM of this phone