GB WhatsApp is a modified version of the original WhatsApp app. It offers additional features and customization options that are not available in the official WhatsApp. Some of the key features of GB WhatsApp include:

1. Multiple Accounts: You can use two WhatsApp accounts on the same phone, which is helpful if you have both personal and work accounts.

2. Customization: GB WhatsApp allows you to change themes, fonts, and colors to make the app look the way you want.

3. Hide Online Status: You can hide your online status, making it appear as though you are offline even when you’re active on the app.

4. Extra Privacy Options: There are features like hiding blue ticks (read receipts), hiding typing status, and disabling the "last seen" feature.

5. Increased File Sharing Limits: You can send larger files, including videos and documents, compared to the original WhatsApp app.

6. Enhanced Media Sharing: GB WhatsApp allows you to send high-quality photos and videos without compression, which means better quality when shared.

However, keep in mind that GB appsonline is not officially supported by WhatsApp, and using it could potentially lead to your account being temporarily banned. It’s important to download it from a trusted source to avoid security risks.