EXHIBIT 4.2







English Language Summary



Authorization Agreement for Radiofrequency Blocks Associated
with Personal Mobile Service (Termo de Outorga de Autorização de Uso de Blocos de Radiofrequências Associadas
do Serviço Móvel Pessoal) No. 113/2016



|Parties:                                 | TIM Celular S.A., as Authorizee, and Agência Nacional de Telecomunicações (Anatel), as Grantor.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
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|Date of Agreement:                       | July 26, 2016.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|Date of Publication in Official Journal: | July 27, 2016.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|Expiration:                              | July 27, 2031 (15 years).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
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|Renewal:                                 | Authorizee has a one-time right to renew, for an equal period.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|Purpose:                                 | Authorization to use blocks of radiofrequency associated with Personal Mobile Service, without exclusivity, in the following sub-bands: 2,500 to 2,510 MHz 2,620 to 2,630 MHz                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|Area:                                    | Personal Mobile Service (SMP) Registration Area (AR) 81 (state of Pernambuco), except the regions of  Agresĕna, Caruaru and São Caitano.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|Amount:                                  | The total amount due for the authorizations conferred by this
        Authorization Agreement, Authorization Agreement No. 113/2016 is R$32,000,000.00 (thirty two million reais), which will
        be payable as follows:
        
        
        ·     The
total amount or 10% (ten percent) of the total amount shall be paid on the date of the signature of the Authorization Agreements,
as adjusted for the IGP-DI at the effective date of payment; and
        
        ·     The
        remaining 90% (ninety percent) of the total amount shall be paid in six equal payments annually, commencing on the 36th (thirty-sixth)
        month from publication of the Authorization Agreements, as adjusted for the IGP-DI at the effective date of payment and, commencing
        12 (12) months from the date of delivery of certain compliance documents, accruing interest of 1.0% (one percent) per month.
        
        Additionally, every two years during the authorization period,
        the Authorizee must pay an amount corresponding to 2% (two percent) of its related revenues for the year preceding payment, net
        of taxes and social contributions. On the 15th year the Authorizee must pay 1% of its revenue for the previous year.
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|Material Terms and Conditions:           | The Authorizee must strictly observe all relevant regulations in respect of the Authorization, including the installation, function and deactivation of related telecommunications stations.  In case of equivalent offers in contracting related to the Authorization Agreement, give preference to national content in the acquisition of its goods, products and technology systems.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
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|Penalty:                                 | Failure to comply with the conditions and obligations in the Authorization Agreement will subject the Authorizee to sanctions established under Anatel regulations, without prejudice to civil and penal sanctions.