---
schema_version: "1"
id: cd1c41f8bb2bed135b8accf522690042792d28fdc04051c73510a177f046b2bb
title: Field Service Mobile App Builder Considerations and Limitations
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/service/264-0-0/mfs_builder_limits.md
canonical_url: https://help.salesforce.com/s/articleView?id=service.mfs_builder_limits.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: ce79da83bc8c0827c35e0af0464d1e04ec7099f2e22ef6c25c629179791612f3
description: Before you start working with the Field Service Mobile App Builder, here are some things to know.
products:
  - Field Service
release: "264"
---
# Field Service Mobile App Builder Considerations and Limitations

Before you start working with the Field Service Mobile App Builder, here are some things to know.

- The Field Service Mobile App Builder is available for Android and iOS.
- Field Service Mobile Builder configurations aren't fully duplicated in Partial Copy, Developer Copy, or Developer Pro Copy sandboxes. To use Mobile Builder configurations in sandboxes, use Full Copy.
- On Android, tabs that are customized using the Field Service Mobile App Builder don’t maintain their current state when switching between tabs and when rotating the mobile device. To avoid this issue, lock the device's screen rotation.
- The maximum number of tabs allowed is 15.
- The Profile tab in the Field Service mobile app is fixed on the right side of the tab bar. Because you can’t modify its location and function, it isn’t shown in the mobile app builder.
- The number of tabs shown in the mobile app builder canvas doesn’t match what the user sees on the actual mobile device. There’s always one additional tab on the device. The Profile tab in the Field Service mobile app is fixed on the tab bar and can’t be modified, so it isn’t shown in the mobile app builder.
- Configuration app names must be unique to all builders. You can't reuse app names that are used in Mobile Builder for Seller-Focused Experience or the Mobile Builder for Salesforce App.