- Solutionselected by MirkoP
I can only recommend the Internet Box 3, it is better than the standard Internet Box in every respect, especially the better WiFi 6 offers much more WiFi range and throughput when the connection is poor (i.e. the WiFi is faster when you are far away from the router)
What should be taken into account, however: According to swisscom.ch/checker, how fast the internet is available to you. If that is over 100 Mbit/s then gFast is available, so a faster connection to the Internet itself is also possible with the Internet-Box 3. But it is extremely important that the error on the line is corrected; if the line is bad, gFast is very susceptible to failure
If less than 100 Mbit/s is available then it is only VDSL2. But with VDSL2 it is also recommended to correct the line errors