my mobile model no. is sony ericsson cyber-shot k790i and this mobile problem is in to the setting menu are five options in this five option one of the conectivity option.
in to the so many options as like bluetooth, data conectvity etc. this options are not display in my mobile.
so please, solve the my mobile problem.
Bluetooth is not a software. It is a hardware. As it is with any accessory, you need to install the necessary driver. This is what you can download from the internet. Bluetooth USB adaptor is cheap these days and you will get the driver along with that. Hope it clarifies.