whowho - Caller ID & Block

whowho - Caller ID & Block

com.ktcs.whowho by VP (Inc)
4.0 (262,460)
10M+
COMMUNICATION
88.2 MB
Updated Oct 14, 2025
View on Google Play

Screenshots

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Ad slot: Top Leaderboard

About this app

▶대한민국 3천만 이용자가 경험한 국민 전화 앱
1. Get informed on numbers as the calls come in
Choose to reject useless spam, and never miss the calls that matter.
WhoWho tells you all you need to know about unknown numbers in real time
- both the good and the spam.

2. Convenient Number Management
Use your smartphone more efficiently by recording important information,
such as whether numbers are safe or spam.

3. Make Community Reports as One
Share information on unknown numbers with other users,
creating a service that’s helpful to all users.

4. Use WhoWho as your default caller on your smartphone
The app allows you to use frequently dialed numbers faster and with more convenience,
and offers several other functions, including friendliness stats on each contact, memos, schedule management, call recording, and others.
In addition, make use of a variety of convenient widgets, including call logs, frequent contacts, and keypad.

5. Block useless numbers for good!
You can identify bad numbers (spam, voice phishing, etc.) before accepting calls,
and you can completely block useless calls using a variety of blocking options.
! However Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS) in accordance with Google’s service policy.

6. WhoWho on Wearables
Use WhoWho on a smart watch by making a simple adjustment to settings.

* WhoWho is a totally free service
* Wireless internet(3G or WiFi) is required for WhoWho to work normally
* Starting From Android 4.4(Kitkat), WhoWho will not be able to block text message(SMS, MMS).
* If you have any questions, please let us know by e-mail : [email protected]

What's New

주요 업데이트 사항
ㆍ 앱 사용성과 안정성을 강화하고 버그를 개선했어요.

App Information

Version Name
4.9.1
Version Code
190433783
File Size
88.2 MB
Minimum OS
Android 7.0+
Target SDK
Android 33
Developer
VP (Inc)
Contact
Website
Content Rating
Everyone
Package Name
com.ktcs.whowho

Permissions Required

This app may request the following permissions:

  • retrieve running apps
  • read your Web bookmarks and history
  • find accounts on the device
  • read your contacts
  • modify your contacts
  • approximate location (network-based)
  • precise location (GPS and network-based)
  • read your text messages (SMS or MMS)
  • receive text messages (MMS)
  • receive text messages (SMS)
  • receive text messages (WAP)
  • send SMS messages
  • directly call phone numbers
  • reroute outgoing calls
  • read call log
  • read phone status and identity
  • write call log
  • record audio
  • view Wi-Fi connections
  • view network connections
  • change network connectivity
  • connect and disconnect from Wi-Fi
  • full network access
  • run at startup
  • draw over other apps
  • control vibration
  • prevent device from sleeping
  • modify system settings
  • write web bookmarks and history
  • receive data from Internet

Recent Reviews

P AE
1.0★
Interface completely in Korean and cannot be changed. Intrusive ads throughout the app. Does not detect spam or previously blocked calls at all. Wants overreaching access to your data and provides virtually nothing but ads in return. TPhone app is hands down better in every way. Hate that Fold 4 with current carrier forces this down your throat to use the Bixby Call feature. Horrid app. Uninstalled a 3rd time. Keep hoping it will improve, only to be seriously disappointed. 😔
Richard Luijten
2.0★
UI looks horrible and cluttered, and only 1/4th of the app is translated (it would literally cost less than 10만원 to get these simple words and sentences translated) but I'm interested in the features so I'm reserving judgment for now. Off to a bad start though.
A Google user
1.0★
It was already installed on my new Samsung phone. Right after I enabled it by following instructions, granting access to my phone's contacts, microphone, usb storage,... it sent an install message to my contacts, and installed itself on my contact's phone. It behaves like a malware. Also, it is popping up advertisements on my screen. I did not have time to experience if this app is useful or not. I am uninstalling this right away due to obvious security issue and lack of privacy respect. bye bye.
rtnunes20
1.0★
I uninstalled a few seconds after installed....too many permissions asked, too many data they want to collect from us. I just wanted to be informed of the damn unknown number...why do they need to know my email address on this case?
이도령
4.0★
Mamy nice features. A little less clear how to greenlight previously flagged numbers, e.g. kt english service gets all kinds of warnings but I really wanted to talk to them and they were legit!
Gene Oh
5.0★
Fantastic app that really proves useful in Korea. It really filters out the riff raff and helps me block unwanted spam. I hope to see this in other countries!
Ad slot: In-Content