You can change the Deliver Mobile App language based on your needs.

D365 F&SCM

Logistics Execution > Setup > Workers > Users

Select your user from the list and click User options in the top ribbon.

Select the Account tab, then the Logistics Execution FastTab.

Turn on the Enable Mobile Translations? toggle.

Enter a Mobile Label File for your preferred language and select your Default Mobile Language.

Generate Label Files

Create a new F&SCM label file using the Wizard (0:04 in video below).
Select the desired languages (0:30 in video below).
1. You should always select en-US as one of the options.
Get a copy of the most recent Deliver Mobile label file from your Avanade support representative.
Paste labels from the generated file into WordPad, then copy and paste into the en-US label file (1:48 in video below).
1. The en-US label file location: PackagesLocalDirectory > {Service F&O Model} > AxLabelFile > LabelResources > en-us > {Label File Name} (0:57 in video below)
Go to LCS and set up a new Label Translation Service (2:26 in video below).
Use the en-US label file as the source and select the desired language to translate to (2:39 in video below).
1. You need to repeat this for each language.
Once the translation is complete, download the translated labels (4:19 in video below).
Unzip the folder and copy and paste the translated label file into the appropriate place (4:30 in video below).
1. You can overwrite the generated label txt file.
2. You need to repeat this for each language.
Run a build on the model that contains the language files (5:30 in video below).

The system pushes this language file to the Deliver Mobile App.

Deliver App

In the Deliver app, tap User Settings, then tap Language.

Select the language you want the app to use and tap Ok.

When you return to the home page, the app should display your selected language.