Issue with Mobile devices using APM. Getting "Connection Reset / Lost"

The first thing to do when troubleshooting APM session issues like this is to examine the log messages in /var/log/apm. Do this and look for errors that occur that may correspond to the client problems.

SAML errors, from a client perspective, usually result in a "RST" or similar behavior and are only visible on the BIG-IP log files. The logging is quite comprehensive though and usually reveals the source of the problem.