What Can I Do with Lightning Web Components in the Field Service Field Service Mobile App?
You can create custom components that are accessed from the Actions menu. Actions built
with LWCs can be simple or complex, depending on the problem you’re solving, and can work even
when mobile devices are offline. Use them to add and annotate an image to attach to a service
report, order a part, contact a SME, or create a custom dashboard for your mobile workers. Use
LWCs in Field Service to do pretty much anything Salesforce can do.