If you use the RSA app on your iPhone, you may suddenly get prompted with a message that your token has expired when you open the RSA app.
Token has expired. Contact your administrator for a replacement token.
Your RSA has expired as set by your organization. If you have not already received a replacement RSA token by email, contact your IT Help Desk so they can administer you a new token. Typically, you’ll only have to select the RSA token from an email attachment and it will prompt to install to your iOS device. Also, in most cases, you will be able to use the same PIN to access an RSA token code.