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Topics Map > University of Chicago > IT Services > Phones & Internet Connections > Wireless

Wireless - Common Certificate Errors on Smart Phones

This article provides some examples of the most common certificate errors that users may encounter on smart phones after a certificate update.

Smart phones, depending on the device manufacturer and operating system it is running, may or may not prompt the user to trust or accept the updated certificate. But in most cases, we expect these devices will definitely detect the change the next time they connect and users will get prompted to take an action to "Trust" or "Accept" the new network certificate.

The following details are meant as examples so that you are aware of what to expect and know how to workaround these issues. By no means is this an exhaustive list of errors or workarounds for smart phones.

iOS Devices

  • Most iOS devices will automatically detect the change and will prompt users to "Trust" or "Accept" the certificate.
  • Tap the Trust/Accept option to dismiss this error.
  • Once you have trusted the new certificate, your network settings will save this trust setting.
  • In some cases, you may need to go back to the wireless settings to select the uchicago-secure SSID from the list and then you need to Trust/Accept the new certificate.
    iPhone cert_trust_error

Android Devices

  • Depending on what version of Android OS you are running, you may or may not notice any errors.
  • In our testing we had 3 different devices and 2 out of 3 devices reconnected without issues and without prompting users to acknowledge a certificate change. The third device actually prompted the user for their user name and password.
  • In the worst case scenario, you will need to manually setup the connection. For reference regarding the secure settings for Android devices please refer to the Manual Settings for Android KB article.

Windows 8.1 Devices

  • Similar to iOS devices Windows 8.1 smartphones will also detect the change of the network certificate and will prompt the user to Accept the new certificate or Cancel the connection attempt.
  • This is a similar message that most Win8.1 users will receive after they have setup the connection to uchicago-secure.
  • Once you Accept, the device should save the connection settings and you should be able to connect to the internet after a few seconds.
  • In the worst case you may have to delete the old network settings and setup a new connection profile.

Keywords:uchicago-secure   Doc ID:52067
Owner:Brian N.Group:University of Chicago
Created:2015-06-08 13:33 CDTUpdated:2017-03-27 16:06 CDT
Sites:University of Chicago, University of Chicago - Sandbox
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