The Gmail team has introduced multiple sign-in for Gmail mobile, a feature in the mobile Web version. Users can now sign into multiple Gmail accounts at once through the mobile Web interface and use a pop-up menu at the bottom of the screen to easily switch between them.
Just like on your desktop, you can now to sign into multiple accounts simultaneously. To sign into an additional account, click on the account switcher at the bottom of the threadlist, then click ”Sign into an another account.” You can quickly switch between accounts by selecting the desired account from the Accounts menu.