One possibility could be that they store only the first four characters plaintext, and keep a hash of the whole password (which is also bad).
I wonder how this feature came to be? What were those meetings like?
I wonder how this feature came to be? What were those meetings like?
Every T-Mobile (including the US one) is owned by Deutsche Telekom, but most of its subsidiaries are named differently. For example, Macedonian is called "Makedonski Telekom" instead of "T-Mobile Macedonia".