Excuse me, do you need to pay by text message for parking in both the city and suburbs of Serbia ?

Suburban parking has no requirements! Only urban areas have such requirements.

I don't know what kind of suburban area you're talking about. In the suburbs, I didn't encounter any charging parking lots. I basically just parked on vacant land. There's no charge for things like wooden house cottages.

In the small towns and suburbs in the south, you can basically park anywhere, but in the cities of Beishan and Noshi, you need to pay attention to the parking fee signs. However, after 14:00 on Saturday until Sunday, it's free for all.