What are the options for pre-paid SIM cards in Uruguay (Montevideo)? What are the options for pre-paid data plans/packages?
Data via cellphone is one of the most competitive marketplaces in Uruguay.
In terms of prepaid data plans, there are several available, from Claro, Antel or Movistar. I won't copy and paste verbatim as I'm sure they're likely to change with time, but an up-to-date wiki is maintained at Uruguay Prepaid Plans on APNCharger.org.