Users are currently required to do paperwork with both their current carrier and the new one when switching. The difficulties include customers having to obtain an MNP reservation number with their current carrier. They then must sign a contract for a new subscription with their new carrier using that reservation number. It takes time and work for anyone hoping to switch. Mobile providers also usually try to stem customers' exoduses to other carriers, which would make it difficult for the MNP system to take off. Under the new system starting from late May, however, users will only need to visit the carrier to which they are switching. They can also receive explanations regarding canceling their current provider with their new carrier. This eliminates any need to work with their current carrier, enabling a one-stop transfer.