The current versions of the ServiceMax iOS apps (iPhone Classic, iPad Classic, FSA iPad and GO iOS) have been certified against iOS 13.2 and iPadOS 13.2.
FSA 3.6.1 For iPad
iPad Classic 18.0.18
iPhone Classic 18.0.15
ServiceMax Go 1.2.0
ServiceMax recommends customers to upgrade to the latest version of the iOS mobile apps to ensure compatibility and take advantage of iOS's latest security and stability fixes.