The best way to do this is to contact our customer service team directly at https://helpcenter.galaxus.de/hc/de/requests/new. Your enquiry can then be checked individually.

Unfortunately, I can't help you. I have a previous version and the problem never occurred for me.

Yes, there are 11 languages to choose from, including French.

Have almost never used the device

I bought it for my parents at the time. Connection to the Swisscom box was possible without any problems.

Thank you for this clarification.

No. You can't. When you pick up the cordless phone, it shows on the base station that the line is busy. If you pick up the handset anyway, the "busy" sign appears. You can't hear anything.

Yes, both devices have a backlight (white). The numbers on the handset are not very legible because the letters and numbers are very high and narrow. The segments themselves are also very narrow.

I can't answer that. I only have a handset. I would not buy the product again today because the writing on both sets is so high and narrow that you can hardly decipher the incoming numbers, etc. The sound quality is not great either. The sound quality is not great either.

We have connected the Doro to a Fritzbox from Sunrise and everything works!!!

Yes, this is possible for up to 5 handsets. This product is compatible with most GAP-supported devices, also from other manufacturers. Check the attached manual for more infomation (Page 10): http://www.doro.ch/fileuploader/download/download/?d=0&file=custom%2Fupload%2FManual_Doro_Comfort_4005_en_v10%28r4907%29.pdf