I feel like every two years I need to call my carrier and complain if I want a decent deal. They will do things like upgrade my plan on their website to have 10 extra gigabytes of data but won’t upgrade me to it until I contact them. There’s also all the new member exclusive deals that I feel make it impractical to just sit on one plan for an extended period of time.
I do prepaid & get a new plan anually. It’s cheaper this way, less surprising bill-wise, & the rotation of numbers can help with security & privacy. All the carriers suck here equally but coverage is the same so I just see who is offering the best deal.