I cannot uninstall or delete the gmail app on my iphone, it takes up 25GB!

Hello Mallinalli,

We'd like to share a resource that can assist you in managing the storage on your iPhone. Specifically, we believe the following section may help: How to check the storage on your iPhone and iPad - Apple Support

"Use your device to check its storage

1. Go to Settings > General > [Device] Storage. You might see a list of recommendations for optimizing your device's storage, followed by a list of installed apps and the amount of storage each one uses.
2. Tap an app's name for more information about its storage. Cached data and temporary data might not be counted as usage.

In the detailed view you can:

• Offload the app, which frees up storage used by the app, but keeps its documents and data.
• Delete the app, which removes the app and its related data.
• Depending on the app, you might be able to delete some of its documents and data."

If you're still unable to remove information associated with your Gmail app, do you have your Gmail added to any other apps on your device? Here's one way to check: Add an email account to your iPhone, iPad, or iPod touch - Apple Support

We hope this helps!

Cheers.