KingKing voice roaming service

KingKing voice roaming service

by PCCW Mobile HK Limited

4 ratings
70 reviews
Free

Details

  • Released
  • Updated
  • October 17, 2012
  • May 26, 2026
KingKing voice roaming service screenshot #1 for iPhone
KingKing voice roaming service screenshot #2 for iPhone
KingKing voice roaming service screenshot #3 for iPhone
KingKing voice roaming service screenshot #4 for iPhone
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About

This VoIP application uses Wi-Fi to make and receive calls globally. It offers free voice minutes for calls to Hong Kong numbers and incoming calls from anywhere, helping users avoid expensive roaming charges. Users can also send SMS messages and utilize their existing mobile number for caller ID.

Wi-Fi calling
Free outgoing calls to Hong Kong
Free incoming calls globally
SMS sending
Caller ID display
Use existing mobile number
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What's New in KingKing voice roaming service

6.0.21

May 26, 2026

This version includes a number of stability enhancement.

User reviews

Error never got fixed

There’s a bug when you in call about few minutes, it would turn to no sound like disconnecting but the call time is still clocking. That’s the problem it exists.
Recently, a new error occurred, when the ring comes, it only appears 0.5 seconds. You can only hear the 0.5 seconds ringtone, but it doesn’t show anything even in the Call Log.
Seems the app never gets any updates.
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Bad service

After renewing the plan, the CS said I am no longer eligible for the Kingking plan! No one told me this when renewing the plan, which is totally unacceptable!

iPhone 17 Pro Max 唔work

彈 app

No sound how to make a call?

no matter calling out or answering a call, no sound

Useful while travelling

It is very useful while travelling with data roaming, connection stable and convenience.
The only thing to improve is if it can link together with the Apple Watch, because the Apple Watch cannot see who is calling through KingKing.

Developer apps

FAQ

What does the KingKing voice roaming service do?

KingKing is a VoIP application that allows you to make and receive calls over Wi-Fi. It is designed to help users save money on international voice roaming charges by offering free minutes for outgoing calls to Hong Kong numbers and free incoming calls from anywhere in the world.

How can KingKing save me money on roaming?

By utilizing Wi-Fi connectivity, KingKing bypasses traditional cellular roaming networks for voice calls. This means you can make calls to Hong Kong numbers and receive calls from anywhere without incurring the high per-minute charges typically associated with international roaming.

Do the people I call or who call me need to have the app installed?

No, the person you call or who calls you does not need to have the KingKing application installed. They can be on a fixed-line or mobile phone, and they do not need to be a subscriber of 1O1O/csl. The app also allows you to send SMS messages to any service provider.

Can I use my existing mobile number with KingKing?

Yes, you can use your existing 1O1O/csl number with KingKing. This ensures that your caller ID is displayed to the people you call, and you can see the caller ID of those calling you, maintaining a familiar communication experience.

Is KingKing available for use in Hong Kong as well as overseas?

Yes, KingKing can be used both while you are in Hong Kong and while you are overseas. This allows you to familiarize yourself with the app's interface and features before traveling, and to continue enjoying its benefits domestically.