FSL Mobile App build for Summer '19 release

We originally tested the mobile with  Version 5.3.0 Build #1291 (As of 2/26/2019)

5/8/2019 - Currently, the check the app version is V5.4.0 BUILD  #1299

For Summer 2019 – what will be the BUILD we should be watching for ?

We want to have sandbox with SUMMER 2019 with the TESTFLIGHT app, with the latest (?) version of the app.

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