Can I use SIM cards that have a reduced bandwidth?

Yes, it is possible, but not very useful.

Limiting the bandwidth of a SIM card always affects the entire connection. For this reason, you should only use SIM cards that are offered without any bandwidth restrictions.

Experience shows that you should be careful with cards without unlimited data usage and, if necessary, book options such as a “day pass” from Telekom in advance so as not to “run into” traffic restrictions.

If you have the option of an additional connection via Wifi or Lan on site, we always recommend using this.