Salesforce Chatter makes getting to work in the full Salesforce site easier than ever. Just log in to the Salesforce Chatter app and launch the full Salesforce site directly from the app.
Tap Full Site in the left navigation menu to launch your Salesforce
homepage. You can also open a specific Chatter post, file, or image in Lightning Experience
directly in your browser by tapping 
and
Open in browser.