Spam calls can be a significant annoyance, often interrupting daily activities and leading to potential scams. Here is a step-by-step guide to help you block these unwanted calls on Android phones.

• Register with the National Customer Preference Register (NCPR) to block telemarketing calls
• Activate DND services through telecom operators
• You can also block spam numbers using Android's built-in spam filter feature

Spam calls are always an annoyance. The marketing and promotional calls often interrupt daily activities and sometimes even lead to scams. These unwanted calls can come from telemarketers, robocallers, or scammers. While spam calls are irritating, you cannot just ignore them or keep your phone silent for longer. You can also not turn on your DND mode for longer as you may end up missing important calls from delivery companies or others. So what to do then?

Here is a short guide on how to block spam calls on Android phones:

Register with the national Do Not Call registry

One of the most straightforward ways to block spam calls is by registering your number with the National Customer Preference Register (NCPR), formerly known as the National Do Not Call Registry (NDNC). This service allows users to opt-out of receiving telemarketing calls.

👉 To activate the DND service:

• Open your SMS app and type "START" and send it to 1909.
• You will receive a list of categories, such as Banking, Hospitality, etc., each with a unique code.
• Respond with the code corresponding to the category of calls you wish to block.
• After processing, you will receive a confirmation message, and the DND service will be active within 24 hours.
• This service effectively blocks unsolicited commercial calls from third parties without affecting essential alerts from banks or service providers.

Activate DND service by telecom operators

You can also activate DND services directly through your telecom provider:

Jio: Go to the MyJio app > Settings > Service settings > Do not disturb. Select the categories you want to block.

Airtel: Visit airtel.in/airtel-dnd, enter your mobile number and OTP, then select the categories you want to block.

Vi (Vodafone Idea): Visit discover.vodafone.in/dnd, enter your details, and choose the categories to block.

BSNL: Send "start dnd" to 1909 from your BSNL number, then select the categories you want to block.

Manually block spam calls

You can also manually block individual numbers. On an Android phone:

• Open the Phone app and go to the call history.
• Tap and hold the spam contact, then select "Block" or "Report."
• This method is useful but can be limited, as spam callers frequently change numbers.
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