New Delhi: Mobile users in India could soon find it easier to identify incoming calls, with the Department of Telecommunications (DoT) directing telecom service providers to introduce Calling Name Presentation (CNAP) from November 1, 2026. The system is designed to display the caller’s name alongside their phone number, including when the number is not saved in the recipient’s contacts.
Under the directive, CNAP will be enabled by default for users on 4G and higher-generation mobile networks, including 5G. The initiative is intended to help subscribers identify callers and make it easier to distinguish legitimate calls from unwanted or potentially fraudulent ones.
However, the change does not mean that every caller will automatically be identifiable in every situation. The name displayed will depend on the information available through telecom operators’ subscriber databases, while international calls will be labelled separately. Users who have opted for Calling Line Identification Restriction will also have their names withheld under the specified rules.
The rollout follows trials on 4G and 5G networks and recommendations from the Telecom Regulatory Authority of India (TRAI) on introducing a verified caller identification system.
How will CNAP caller ID work?
Calling Name Presentation is designed to show two pieces of information when a call arrives: the caller’s phone number and their name.
If the caller’s number is already saved in the recipient’s contacts, the phone can display the locally saved contact name. If the number is not saved, CNAP can show the caller’s name as recorded in the originating telecom operator’s subscriber database for domestic calls.
For international calls, the system will display the words “International Call”, according to the DoT order.
The process will involve telecom operators maintaining databases that map subscribers’ names to their mobile numbers. When a call reaches a recipient, the receiving operator will retrieve the relevant name through the prescribed query-response mechanism and present it to the called user.
This approach differs from caller identification apps that may rely on crowdsourced contact lists, user reports or other external databases. CNAP is intended to use subscriber information held by telecom operators, providing a name linked to the caller’s registered connection.
The accuracy of the displayed name will therefore depend on the quality and currency of the operator’s records.
CNAP to be enabled by default on 4G and 5G
The DoT directive specifies that CNAP will be enabled by default for users on 4G and higher-generation mobile networks.
This means eligible subscribers will not need to activate the feature individually under the prescribed rollout.
The order also addresses the possibility of extending the service to older networks. However, implementation on 2G and 3G networks, as well as public switched telephone networks, will be considered separately.
The initial focus on 4G and 5G reflects the networks on which the system has been trialled. Telecom operators will need to establish and maintain the infrastructure required to retrieve and display caller names reliably.
The November 1 date marks the scheduled introduction under the directive. The practical experience for individual users may depend on operator implementation and the network conditions involved.
How CNAP could help identify unwanted calls
Unwanted calls and phone-based fraud remain concerns for mobile subscribers. A caller may contact someone from a number that is not saved in their phone, making it difficult to determine who is calling before answering.
CNAP is intended to address part of this problem by displaying the name associated with the calling number through telecom subscriber records.
For example, a user receiving a domestic call from an unsaved number may see the registered subscriber name rather than just a sequence of digits. This could help users make a more informed decision about whether to answer.
The system may also make it easier to identify calls that appear inconsistent with the displayed subscriber information.
However, CNAP should not be treated as a guarantee that a call is genuine or safe. A displayed name identifies the subscriber information associated with a connection; it does not independently establish the caller’s intentions or verify every claim made during a conversation.
Users should continue to exercise caution when callers ask for banking details, passwords, one-time passwords or money transfers.
Privacy safeguards under the new system
The DoT order also sets out requirements intended to protect subscriber information.
Telecom operators must follow a security-by-design approach. Under the specified mechanism, a caller’s name cannot be retained through the query-response process after the incoming call ends.
The rules also provide for the names of subscribers who have opted for Calling Line Identification Restriction (CLIR) to remain undisplayed.
These provisions are intended to limit the exposure and retention of caller information while enabling the service to function.
The requirement for operators to establish and maintain subscriber-name databases will nevertheless make data accuracy and security important aspects of implementation. Operators will need to ensure that the information used to identify callers is handled according to the prescribed safeguards.
Businesses may display registered trade names
The directive also provides for a separate arrangement for business and bulk connections.
Telecom operators may allow eligible business subscribers to display a preferred name instead of the name recorded in their subscriber database. The preferred name must meet specified registration requirements.
It must either be a trademark registered in the subscriber’s name with the Trade Marks Registry or a trade name registered on the Goods and Services Tax portal.
Operators will be required to verify the proposed name and supporting documents before allowing it to be displayed. Existing subscribers who want to update their preferred names will have to apply to their operators.
This provision could help businesses display a recognised registered name when contacting customers, rather than a name that may be unfamiliar to recipients.
The verification requirement is also intended to prevent subscribers from simply choosing an arbitrary business identity without supporting documentation.
How CNAP differs from caller identification apps
Caller identification apps are already used by many smartphone owners to identify unknown numbers, flag suspected spam and report unwanted calls.
CNAP takes a different approach by relying on information recorded by telecom operators rather than depending primarily on crowdsourced databases.
The systems may serve overlapping purposes, but they are not identical. Caller identification apps can offer additional features, such as spam reports and community-based warnings, depending on the service. CNAP’s central function is to display the caller’s name associated with the telecom subscriber record.
Because the two approaches use different sources of information, the names displayed by an operator’s CNAP service and a third-party app may not always be identical.
CNAP’s effectiveness will depend on the accuracy of subscriber records, the reliability of the technical implementation and the extent to which eligible calls are covered.
TRAI recommendations paved the way
The directive follows earlier regulatory discussions about introducing a standard caller-name display system in India.
TRAI issued recommendations on CNAP in February 2024. Its original proposal favoured making the service available to subscribers who requested it.
In October 2025, TRAI agreed with the DoT’s proposal to make CNAP available by default, according to the information cited in the directive’s background.
The latest order sets out the planned implementation for 4G and higher-generation networks, while leaving the arrangements for older networks and public switched telephone networks for separate consideration.
What mobile users should know
From November 1, the planned CNAP rollout is expected to make caller names available by default on eligible 4G and 5G connections, alongside phone numbers.
Users should understand that the displayed name will generally come from the operator’s subscriber records when a number is not saved in their contacts. International calls will receive a separate label, and subscribers using the specified number-restriction facility will have their names withheld.
The system could improve transparency around incoming calls, but it will not eliminate every unknown call or prevent all forms of fraud. A caller’s displayed name should be treated as useful identification information rather than a guarantee of legitimacy.
As telecom operators implement the directive, the key questions will be how accurately names are displayed, how consistently the service works across networks and how effectively the prescribed privacy safeguards are maintained.