i have Enterprise 10.8.1 and want to use Collector for ArcGIS but it gives my untrusted certificate on my smartphone, so i searched for this and reached out that ESRI's said to work on smartphone apps your enterprise must have CA certificate.
then i found that to use CA your machine must be on a public Domain/IP, now i want a workaround to be able to use Collector for ArcGIS and I cannot buy a certificate or offer a public domain.
any WORKAROUND!!
my machine:
Azure VM, Server 2019 Datacenter