No, it does not have TMC according to TomTom, as the function is taken over by the permanent mobile radio data connection.

Nope, no RDS-TMC (https://de.support.tomtom.com/app...)

And yes, TomTom devices with SIM only have GSM/2G ... so Live Traffic will no longer work if the provider with whom TomTom has the contract (in CH possibly Swisscom) switches off GSM/2G ... as it looks in CH all end of 2020
- why pure GSM/2G devices (even low cost phones) are still being sold, I really don't understand
- why TomTom doesn't equip their sat navs with at least 3G ... no idea ... might still come by the end of 2020 ...
- alternative are the sat navs with Bluetooth (e.g. the current Rider is only available this way), where the smartphone then takes over the data traffic ... of course not optimal for Swiss with data roaming abroad ... nobody really wants that
- in any case, it makes no sense to buy the current TomTom SIM Navis at the moment ... unless you don't care about Live Traffic, which is one of the best things about TomTom ...

as far as I have read, 2g is used for this mobile data connection - so no longer in operation for us from 2020 and therefore I also think TMC is available as a backup.