***ATTENTION***
1) The insertion of the 9th digit is made only in contacts in the phone's internal memory. If your contacts are stored in SIMCARD, use the resources of your schedule to copy the same to the device's internal memory.
2) Timing with remote accounts like Google, Yahoo and Samsung manipulate the contact list. If after inserting the 9 digit number back to the original format "alone", check the timing with these accounts. Samsung account for example usually bounce back into shape after 1 day.

The application 9 digit Leucotron automates the insertion of the ninth digit to mobile numbers in Brazil according to the schedule of Anatel:

The ninth digit is already present in the mobile phones of the following states:
- Sao Paulo (11, 12, 13, 14, 15, 16, 17, 18 and 19)
- Rio de Janeiro (21, 22:24)
- Holy Spirit (27 and 28)
- Pernambuco (81 and 87)
- Alagoas (82)
- Paraíba (83)
- Rio Grande do Norte (84)
- Ceara (85 and 88)
- Piaui (86 and 89)
- Para (91, 93 and 94)
- Amazon (92 and 97)
- Roraima (95)
- Amapá (96)
- Maranhao (98 and 99)
- Minas Gerais (31, 32, 33, 34, 35, 37 and 38)
- Bahia (71, 73, 74, 75 and 77)
- Sergipe (79)
- Federal District (61)
- Goiás (62 and 64)
- Tocantins (63)
- Mato Grosso (65 and 66)
- Mato Grosso do Sul (67)
- Acre (68)
- Rondônia (69)

On 11/06/16 the ninth digit will be added to the mobile phones of the following states:
- Parana (41, 42, 43, 44, 45 and 46)
- Santa Catarina (47, 48 and 49)
- Rio Grande do Sul (51, 53, 54 and 55)