Edit: As this telephone has a plug that cannot be used in Switzerland, a suitable Schuko adapter is normally supplied. The Telekom Speedphone 12 comes with an EU plug as standard, which generally does not fit directly into Swiss sockets. For use in Switzerland, you therefore need a suitable adapter or a power supply unit with a Swiss plug.

No. This is only an additional handset for a telephone station. It is not a telephone in its own right.

I'm sorry to hear that - perhaps there is a software issue. Please contact our customer support: https://helpcenter.digitec.ch/hc/en-us/requests/new

Unfortunately no, according to my research the Speedphone 12 is designed for wireless use with a Speedport router with DECT-CAT-iq (2.0) base, the Speedphone 12 itself has no physical connections.

According to our information, the phone works with Swisscom.