Yes, you can connect the JioPhone with computer.You can also charge it via computer.
Yes, the JioPhone does have FM radio. In fact, it is wireless FM radio. You do not require to use the earphones to use the fm radio.
No. You cannot use CDMA sim card in the JioPhone.
Yes, You can type in Malayalam language in JioPhone. JioPhone supports 22 Indian vernacular languges.