When the call of a unknown number appears on your screen cellularthe first thing you probably do is reject it immediately to avoid interruptions or possible scams; However, that reaction might not be helping as much as you think. As explained by Nona, a specialist in the use of tools artificial intelligencecertain actions taken against spam calls can be interpreted by automated systems as signals that a telephone line is active, which could help the number continue to be part of future contact campaigns. Did you know this? Here we explain everything in detail.

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Why does rejecting spam calls increase in frequency?

The companies that carry out massive telephone campaigns They usually use systems capable of processing large numbers of calls in a short time. These platforms, in addition to being in charge of dialing numbers, also collect information about the behavior of each telephone line.

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According to Nona, reject a call It can become a form of interaction that allows these systems to detect activity. Even if there is no conversation, the fact that the user responds in some way to the call generates data that can be stored and analyzed.

Automatic dialers record different scenarios: calls answered, rejected, ignored or interrupted after several rings. Using this information, the platforms build profiles that help determine which numbers appear to be in use.

The specialist indicated that, within this process, a active line may be more attractive for future telephone campaigns. As a consequence, some numbers continue to be contacted repeatedly by different commercial or promotional services.

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The problem is also related to the circulation of personal data. Many people share their telephone number when registering for applications, participating in promotions or using digital services. That information may end up being part of databases used for actions marketing.

YOU’VE BEEN BLOCKING SPAM CALLS BADLY THIS WHOLE TIME.

Every time you reject a call, you confirm that your number is active.
The calls multiply.

This is what really works:

— Nona (@Nona_xai) January 9, 2026

Why do I receive spam calls?

The spam calls They are usually related to the use of databases that contain contact information collected through different channels. He telephone number You can join these lists after completing online registrationsparticipate in promotions, download applications or use services that request personal data during the registration process.

In many cases, companies use this information to make commercial campaigns aimed at potential clients. There are also situations where data is shared between companies or used by authorized third parties for promotional activities.

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What to do to avoid receiving spam calls?

To reduce the amount of unwanted callsNona recommends avoiding any interaction with suspicious numbers. He also advised paying attention to the way personal data is shared in Internet and periodically review the permissions granted to different digital platforms.

Among the actions that can help reduce spam calls are found:

• • Do not answer unknown numbers when a call is not expected.
• • Do not return missed calls from suspicious numbers.
• • Do not interact with automated recordings.
• • Do not press keys to request the deletion of telephone lists.
• • Avoid sharing your cell phone number on unreliable sites.
• • Review the privacy settings of applications and services.
• • Activate call filters available on the device.
• • Use caller identification tools.
• • Block numbers that make repetitive contacts.
• • Submit reports or complaints when possible fraud attempts are detected.

How to block spam calls on my cell phone STEP BY STEP

In addition to taking preventive measures, users can restrict directly the unwanted calls using the functions included in most smart phoness.

For block a number From your cell phone, follow these steps:

• 1. Open the calling app.
• 2. Enter the recent call history.
• 3. Locate the number you want to block.
• 4. Access the number or contact information.
• 5. Select the “Block” option.
• 6. If available, mark the number as spam.
• 7. Confirm the action.

In addition to the basic procedure of blockademany devices incorporate additional tools to strengthen protection.

Among the most common functions are:

• • Automatic filtering of suspicious calls.
• • Identification of possible commercial calls.
• • Silence of unknown numbers.
• • Alerts related to possible telephone fraud.
• • Blocking based on reports made by other users.

Likewise, there are specialized applications that use updated databases to detect spam calls before they are attended and block them automatically.

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