How to change your signature in the Gmail app on Android

howtosimply.com/guides/how-to-change-your-signature-in-the-gmail-app-on-android/ · Checked October 2026 · Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

3 of 3 steps with real screenshots · 1 official source below

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Gmail

Path

Gmail › Settings

Real screenshots

3 of 3 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Open Mobile signature

   Gmail, menu, Settings, tap your account and scroll to General. Mobile signature showed Not set on ours.

   Done

2. 

   Type the signature

   The box says: add a mobile signature, or leave blank to use your web signature. Plain text only, no pictures or links with other text.

   Done

3. 

   Tap OK

   New mails from the app on this phone use it from now on. We tapped Cancel, so ours stayed Not set.

   Done

If you do not see this option

• There is no Mobile signature row Gmail Help says to choose the Google Account in Settings first; Mobile signature is on that account's page. Scroll down the menu to reach Settings. Source: Create a Gmail signature (Android)

If this does not work

• Your mails show the signature from the computer Gmail Help says that if you do not create a signature in the app, new messages use the one you made on your computer. Set a Mobile signature to override it. Source: Create a Gmail signature (Android)

About this guide

The Gmail app has its own plain-text signature, separate from the one on your computer. That is why mails from the phone can sign off differently. Our Gmail account is a real one, so addresses, senders and subjects are blurred; the only mail we touched was a test message we sent to ourselves.

The screenshots are from the Gmail app on a Samsung Galaxy A57 5G with Android 16 and One UI 8.5, in dark mode. The app looks the same on other Android phones; only the phone's own settings screens differ by brand.

Good to know

The signature is set per account, so each account in the app can have its own.

For a signature with a logo or links, set it on the Gmail website and leave the mobile signature blank.

In short: Gmail, Settings, account, Mobile signature: type it, OK. Blank uses the web signature.

📷 See real photos from the Galaxy A57 in our Camera Lab, next to 10 other phones.