The version of Apple iOS running on the mobile device is prior to 11.2.2. It is, therefore, affected by multiple vulnerabilities as referenced in the HT208401 advisory.
Binary data apple_ios_1122_check.nbin
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5753
support.apple.com/en-us/HT208401