Why Are They Always Taking Calls in Private? Private Investigator Singapore Insights Into Secretive Phone Habits

Clarissa
7 hours ago
4 min read

It used to be different—your partner would answer calls in front of you, talk openly, and maybe even put it on speaker. But now? Every call is taken in another room. They lower their voice. They say, “It’s work” or “Just a friend,” and quickly hang up when you walk by. It’s hard not to feel like something’s changed.

At Top Private Investigator Singapore, we’ve seen how communication patterns, especially with phones, are often the first sign of emotional distance—or something more. While not all private phone calls point to dishonesty, changes in phone behaviour can tell you a lot about what might be happening beneath the surface.

In this article, we dive into the red flags, behavioural shifts, and real insights from local investigation cases in Singapore to help you better understand when secretive calls might mean more than they appear.

1. They Never Take Calls Around You Anymore

This is often the first major change.

Before:

Casual phone chats on the couch
Conversations with friends or colleagues out in the open

Now:

Always walking away to answer
Taking calls in the toilet or balcony
Lowering their voice or whispering

Private Investigator Singapore Insight: In several local cases, this shift in phone behaviour marked the beginning of concealed communication with someone else—especially when paired with increased emotional distance.

2. Sudden Increase in Phone Activity

If your partner is suddenly glued to their phone, especially during odd hours, it could signal a change in priorities or relationships.

Watch for:

Late-night or early-morning calls
Frequent messaging followed by quick phone calls
Always keeping the phone face-down or on silent

Singapore Private Investigator Case Note: In many infidelity-related investigations, clients first noticed how their partners became more protective of their devices during periods of increased secrecy.

3. Vague Explanations for Who’s Calling

When someone has nothing to hide, they usually don’t hesitate to say who called. But if your partner:

Responds with “Just work stuff” or “Nobody important”
Gets defensive when you ask
Rushes off without saying anything

…it’s worth paying closer attention.

Local Insight: We’ve found that people who avoid giving names often do so not because of work privacy, but because the real identity would raise questions.

4. Phone Locked, Double Passworded, and Always With Them

A locked phone is normal. But if they’ve recently:

Changed their passcode
Activated hidden chat apps
Keep their phone on them even in the shower or bathroom

…it’s often a sign of heightened secrecy.

Tip: A sudden shift in digital habits often lines up with the start of a new, undisclosed relationship.

5. Ending Calls Quickly When You Walk In

This one stings—and it’s very common.

Signs Include:

They say “Gotta go” and hang up instantly when you appear
They look startled or annoyed if you walk in mid-call
They ask, “How long were you standing there?”

Private Detective Observation: Quick call terminations often reveal that the caller’s identity or conversation topic isn’t something the partner wants you to know.

6. Changes in Voice Tone or Mood After Certain Calls

Pay attention to how they sound before vs. after these private calls.

Examples:

They suddenly seem flustered or distracted
They become extra distant, moody, or emotionally charged
They start fights shortly after a call

What This Could Mean: These calls may not just be conversations—they could be emotional triggers, especially in cases involving secret relationships or emotional affairs.

7. You’re Told You’re “Overthinking” Every Time You Ask

When someone becomes secretive, they often gaslight or dismiss the other person’s concerns.

Common Phrases:

“Why are you being so insecure?”
“It’s just work, calm down.”
“You don’t need to know everything.”

But Here’s the Truth: If something feels off, it probably is. Brushing off your instincts is often a defence mechanism to avoid explaining the real situation.

8. Decreased Communication Between the Two of You

Oddly enough, as they talk more to “someone else,” you may find they talk less with you.

Watch for:

No more “How was your day?” conversations
Withholding of everyday updates
Becoming emotionally unavailable or checked out

Singapore Private Investigator Insight: This “replacement” of emotional connection is a tell-tale pattern we see in both emotional and physical affair investigations.

9. Friends or Colleagues Know More Than You Do

Sometimes, the people around them know about the secret caller—but you don’t.

Examples:

Friends saying things like “Oh, that’s probably so-and-so again”
You notice inside jokes or references you’re not part of
A new name keeps popping up—but never from your partner

This kind of disconnect can indicate a parallel social life that you’re being kept out of.

10. Your Intuition Won’t Let It Go

This point matters more than people think. If the behaviour:

Makes you feel anxious
Feels deliberately sneaky
Keeps happening despite your concerns

…it’s time to acknowledge the pattern.

Your gut often picks up on shifts long before concrete proof appears.

Final Thoughts from Top Private Investigator Singapore

Secretive phone habits don’t always mean betrayal. But when there’s a sudden and sustained shift in how, when, and where someone uses their phone—especially when paired with emotional changes—it’s worth paying attention.

At Top Private Investigator Singapore, we’ve supported individuals through some of the toughest moments in their relationships. One of the most common first clues? Private phone calls that didn’t used to be private.

You deserve clarity. Whether through open conversations or simply staying aware of behavioural changes, trust that your concerns are valid.