• Android
• iOS
• Desktop

Android

To change the language:

1. Open Signal.
2. Tap your profile to go to Signal Settings.
3. Select Appearance.
4. Select the last item Language. 
5. Scroll through and select the language for it to apply immediately.

iOS

iOS 13 & iOS 14

To change the language:

1. Follow steps from Apple's support page to ensure the language is enabled in iOS Settings.
2. Go to iOS Settings > Signal.
3. Select Language.
4. Scroll through and select the language for it to apply immediately.

iOS 11 & iOS 12

Signal matches the language on your device. Follow steps from Apple's support page to change the language.

Desktop

Signal Desktop matches the language of your computer's operating system. 

To manage spell check:

1. In Signal, tap your profile >  Preferences...
2. Under General, select or deselect Enable spell check of text entered in message composition box.