Tram 28 is so overrated in the guide books. My husband had his wallet stolen on it by what we think were two elderly people who had bumped into him on a crowded tram. We thought we were savvy careful travellers but clearly these people are skilled thieves. At the tourist police station there were 3 other gentlemen who were reporting exactly the same thing...wallets stolen in Lisbon.
I’m guessing the tourist police station must spend the majority of their time processing such incidences. Address for those who needs it is Praça dos Restauradores next to the museum.