Is GB WhatsApp Available for iPhone?
GB WhatsApp APK is designed for Android. iOS does not install APK packages, so there is no direct APK installation process for iPhone.
Why APK Files Do Not Work on iOS
Android and iOS use different application packaging, signing and permission systems. Renaming an APK or downloading it through Safari does not convert it into an iPhone application.
Avoid Risky Jailbreak Claims
Jailbreaking weakens important iOS security controls and can cause compatibility, privacy and warranty problems. Websites that promise a one-click GB WhatsApp iOS APK should be treated cautiously.
Safer iPhone Option
For iPhone, the safer route is the official WhatsApp application from Apple's App Store and the privacy/customization options supported by iOS.