 the security problem
    has been resolved by an operating system update.</p>
<h3 id="integrity-checks">Integrity checks</h3>
<p>Smartphones can be operated with a manipulated operating system
    (so-called “jailbreaking” or “rooting”). Not every affected user is
    aware that their operating system has been manipulated (e.g. with
    devices purchased second-hand) and the security risks associated with
    this. A technical check of the operating system is carried out every
    time the e-prescr