Reception is ok. IPv6 is not.

The device works quite well on my WinXP system. The reception is significantly better than when using the SIM card mitgekauften device. Important note: in the settings in the device manager, select "Computer must disable the device to save power". Otherwise the device is permanently switched off (to me after a few seconds), and Windows reports a driver problem .... Of course, what would you expect otherwise. Anyway: hook off, then it works.
A star's withdrawal due to lack of IPv6 support ... at least it works for me, but could theoretically also be the provider. Who gets along with IPv4 and thus nowadays probably inevitable with DS Lite, which I can recommend this device without reservation.