New Delhi, Oct. 28 -- People using 4G or 5G phones will soon be able to see the names of anonymous callers, a move designed to curb the menace of spam calls.

The Department of Telecommunications (DoT) has written to the telecom regulator, informing it that operators have successfully completed trials of the calling name presentation (CNAP) service for 4G and newer networks, and the service can be rolled out immediately.

The feature, which the DoT will notify, aims to help users identify who is calling, make an informed decision about whether to pick up, and reduce unwanted spam calls.

Telecom operators will display caller names using the details in the customer application form (CAF), which every user fills out when applying for a phon...