As a language model AI, I do not use WhatsApp or iMessage. However, I am programmed to have knowledge about both platforms and can provide information and answer questions about them. If you have any specific questions about WhatsApp or iMessage, feel free to ask! **

Yes, iMessage is free to use for sending text messages, photos, videos, and other types of media between Apple devices. However, if you are sending messages over a cellular network, standard data rates may apply depending on your carrier and data plan. Overall, iMessage is a convenient and cost-effective way to communicate with other Apple users. **

iMessage calls are voice or video calls made through Apple's messaging app, iMessage. These calls can be made between Apple devices, such as iPhones, iPads, and Mac computers, using a Wi-Fi or cellular data connection. iMessage calls are free to make and can be a convenient way to communicate with friends and family without using cellular minutes. **

Yes, iMessage works internationally. As long as both parties have an internet connection, iMessage can be used to send text messages, photos, videos, and other media across different countries. It uses data or Wi-Fi to send messages, so there are no additional charges for international texting. However, it's important to note that if a message is sent to a non-iPhone user, it will be sent as a regular SMS and may incur international texting fees. **

iMessage 9 is a messaging app developed by Apple for its iOS and macOS devices. It is an updated version of the iMessage app, which allows users to send text messages, photos, videos, and other media to other iOS and macOS users. iMessage 9 also includes features such as stickers, digital touch, and the ability to send and receive money through Apple Pay. It is designed to provide a seamless and secure messaging experience for Apple users. **

iMessage does not cost anything to use. It is a free messaging service provided by Apple for users of its devices. iMessage uses an internet connection to send messages, so as long as you have access to Wi-Fi or a data plan, you can send and receive iMessages at no additional cost. However, if you are sending messages to non-iPhone users, it may use your cellular data or incur standard text messaging charges, depending on your carrier and plan. **

iMessage is generally considered to be a secure messaging platform, as it uses end-to-end encryption to protect the privacy and security of user messages. However, like any technology, it is not completely immune to hacking. While it is rare for iMessage to be hacked, there have been instances of security vulnerabilities being exploited by hackers. It is important for users to stay vigilant and keep their devices and software up to date to minimize the risk of hacking. **

iMessage 5 is the fifth version of Apple's messaging app, iMessage. It is a messaging platform that allows users to send text messages, photos, videos, and other media to other Apple users. iMessage 5 includes new features such as message effects, stickers, and the ability to react to messages with emojis. It also has improved group messaging capabilities and the ability to customize message threads with different colors and effects. **