Is there such a thing as a Sim card for the Nintendo Switch Lite to have internet everywhere?
You could open a Wi-Fi hotspot with a smartphone and go online with the Nintendo Switch Lite. Alternatively, you can buy a portable LTE router, insert a SIM card there and access the Internet via the LTE router's Wi-Fi.
No.
You need an appropriate slot for a SIM card. As far as I know, the Switch doesn't have that. Otherwise any SIM card would be good. Alternative: an LTE router. The SIM card comes in and provides you with a WLAN.
How do you open one?
No, since the switch has no termination for a SIM card and no modem is built in, there's of course also a small matching card.
Alternatively, you can use a cell phone or mobile router to connect to Wi-Fi to be online.
That depends on your smartphone. Below are instructions for Apple's iOS and Google's Android:
https://support.apple.com/...e/HT204023
https://support.google.com/...9108?hl=de
No you can only use a mobile 4g router or your mobile phone but in most cases online gaming will not be possible due to a high ping or you don't get your own ip with d1 you have to use a certain APN to be able to play online
Hey What should be the difference between a mobile hotspot and a home network? I often achieve significantly better data rates via mobile phone than via broadband. The ping is roughly identical