In the 32 years I worked for GTE/Verizon as a network engineer I have never seen a cell site go online in a week or less. When a new pre built cell site building arrives and is placed it is no where near ready for turn up. The Telco circuits don't just magically appear. We can not even design the circuits until the building is placed and signed off by the city. It then takes a minimum of three crews before we turn up our circuits (crew to place the cable, crew to mount the and terminate the cable, then our crew to program, test and turn up).
A prebuilt cell site building is only sparsely equipped when it arrives at the site.