Exhibit 10.7

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

PREAMBLE:

CONSIDERING THAT on December 8, 2011, the ISSUER issued in favor of CAIXA, the Bank Credit Note Nr. 21.3150.777.0000001-97, in the principal amount of six hundred forty million Reais (BRL 640,000,000.00) (the “Note”);

CONSIDERING THAT on February 13, 2015, ISSUER and CAIXA entered into the first amendment to the Bank Credit Note Nr. 21.3150.777.0000001-97, amending, among other conditions, the interest rate incurring on the outstanding balance and additional guarantee to compliance with obligations therein (the “First Amendment” and, with the Note, the “CCB”).

CONSIDERING THAT the ISSUER, until this date, made amortizations to the principal in the amount of one hundred twenty eight million Reais (BRL 128,000,000.00) under the CCB;

CONSIDERING THAT ISSUER AND CAIXA intend to amend, with no intention to novate the CCB in order to amend some terms (“Second Amendment”);

THE PARTIES RESOLVE to amend the CCB under this Second Amendment, under the following terms and conditions.

CLAUSE ONE– The Credit Characteristics shall be in effect with the following writing:

CREDIT CHARACTERISTICS:

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

7 – Non-Free Movement Account:

8 - Free Movement Account:

10 - Guarantor:

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

On the Dates of Payment indicated in Clause Two below, by the due date set forth in Field 2 in this Note, in Brazilian currency in this city, I, ISSUER, as issuer and/or, I, GUARANTOR, shall pay to CAIXA or to its order, by this Note that with the bank statements of the account and/or calculation spreadsheet, is acknowledged as a title of enforceable net debt, arising out of the use of funds made available to ISSUER and added with Financial Fees agreed upon in this Note;

The debt represented by this Note includes the amounts of monthly amortization, as indicated in Field 6 in this Note, with respective Financial Fees, calculated considering the effective interest monthly rate, incurring quarterly or on each monthly installment, as indicated in Field 6 in this Note, and the operation statement or the spreadsheet, that complements this Note, shall express the amounts and respective percentage of Financial Fee, under the terms in Law Nr. 10.931, of February 08, 2004 and other current laws.

CLAUSE TWO – Clause Two in the Note shall be in effect with the following writing:

TERM

CLAUSE TWO – This Note shall be in effect for fifty eight (58) months, from the effective date of signature of this amendment to the Note, compliant with the following schedule of payment and amortization:

(a) financial fees will be due on 09/08/2015, 12/08/2015 and 03/08/2016 (“Lock Up Period”)

(b) financial fees and principal will be due starting from 06/08/2016 as above (each date of payment indicated below, a “Date of Payment”):

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

CLAUSE THREE – Clause Eight in the CCB shall be in effect with the following writing:

PAYMENT TERMS

CLAUSE EIGHT – As means for effective payment of the debt arising out of this Note, comprised by the Principal duly added with Financial Fees, ISSUER authorizes CAIXA to debit from the Free Movement Account mentioned in Field 8, on the respective Dates of Payment, irrevocably and irretrievably, amounts sufficient and required on each date, as applicable.

Paragraph One – During the Lock Up Period, ISSUER agrees upon the quarterly payment of the Financial Fees, described in Clause Three, with the first due date being on 09/08/2015, and remaining payments on 12/08/2015, and 03/08/2016.

Paragraph Two – After the Lock Up Period, ISSUER agrees upon the payment of the Principal, duly added with Financial Fees as per Section Two of this Note.

Paragraph Three – If any Date of Payment if not a working day, the respective payment shall be due on the first subsequent working day. For purposes of the terms in this Note, working day means Monday to Friday, except for national holidays or days when, for any reason, banks do not work or the financial market at ISSUER’s registered office location does not work.

Paragraph Four – The ISSUER authorizes CAIXA, regardless of prior notice, to use the balance found deposited in any of the accounts where it appears as title holder, at any unit of CAIXA, as well as other accounts that could be opened, whether to liquidate or for partial amortization of the debt found under the terms in this Note, if the payment is not made according to the terms in the caput of this Clause.

Paragraph Five – Monthly installments are due and calculated according to the Constant Amortization System – SAC, compliant with the terms in Clause Two, and fees according to Clause Three.

CLAUSE FOUR- Clause Twelve in the CCB shall be in effect with the following writing:

SPECIAL OBLIGATIONS

CLAUSE TWELVE – The ISSUER agrees upon, starting on the first half in 2016 (inclusive), to provide document proving that the index found by dividing the Net Debt by EBITDA is equal or lower than four (4.0) for the first half in 2016, three point five (3.5) in the second half in 2016, and two point five (2.5) starting on the first half in 2017 (including), and this index should be calculated by the ISSUER every six months (i) by August 15 based on the accounting closure on June 30; (ii) by the fifth working day after the maximum term provided for applicable regulation to disclose ISSUER’s financial statements and accounting statements; and (iii) based on ISSUER’s consolidated financial statements.

Paragraph One - For purposes of calculation of financial indexes in this Clause, to be calculated according to accounting principles generally accepted in Brazil, the following definitions and criteria should be adopted:

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

“Net Debt” means the amount calculated under consolidated basis at ISSUER, equal to (a) the sum of Liabilities before financial institutions, issued securities representing the debt and the net balance of derivative operations (liabilities less assets from derivative operations); subtracted from (b) available funds (cash, banks, immediately available applications or short term applications, securities issued by itself or third parties, and public and private bonds of any kind) and (e) effects of mark-to-market of derivative operation;

“EBITDA” means ISSUER’s operational profit, under consolidated basis, related to the last twelve (12) months, summed to depreciation and amortization expenses; and

“Liability(ies)” means the principal amount of securities representing the debt, issued before financial institutions registered in the ISSUER’s balance sheet on the calculation dates.

Paragraph Two – If at any audit time of obligations under this clause, ISSUER fails to meet the above mentioned index, ISSUER shall have additional ten (10) working days, from the notification by CAIXA in this sense, to solve the respective default, by any operation under which this index may be reestablished, including, without limitation, the ISSUER´s capital increase in to reduce the Net Debt, with or without partial payment of this Note. In this case, this reestablishment, provided that it occurs within ten (10) working days and accepted by CAIXA upon written notice, shall be deemed as effective on the date of determination of the respective index, with no penalty applicable to the ISSUER.

CLAUSE FIVE - Clause Twenty Two in the CCB shall be in effect with the additional line XXVII below:

XXVII) (i) Upon being in effect, change to the judicial recovery plan of NII Holdings, Inc. that (a) could imply, directly or indirectly, the inability of Nextel or Nextel S.A. to comply with the obligations under this Note and/or (b) contemplates assumption, by Brazilian Affiliates, of no obligation or lien in disagreement or inconsistent with the terms in this Note; or (ii) change or revocation in the competent judicial decision that confirms the judicial recovery plan of NII Holdings, Inc.

CLAUSE SIX - ISSUER shall present this amendment to be registered by the Registry of Titles and Documents in the City of São Paulo, Capital. Registration expenses shall be borne by the ISSUER who, hereby, authorizes the debt of the respective amounts from account Nr. 180-4, maintained at branch 3150, operation 003, CAIXA.

CLAUSE SEVEN – All other clauses and conditions in this CCB, as amended by its First and Second Amendments, that are not expressly amended hereby, are ratified and shall remain in full force for all due purposes.

And, in witness thereof, ISSUER issues this Bank Credit Note duly signed in four (4) copies of equal tenor, and the first copy (bank copy) is negotiable.

São Paulo, June 25, 2015

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

ISSUER:

GUARANTOR:

SECOND AMENDMENT TO THE BANK CREDIT AGREEMENT NR. 21.3150.777.0000001-97, ISSUED BY NEXTEL TELECOMUNICAÇÕES LTDA., IN 12/08/2011, IN FAVOR OF CAIXA ECONÔMICA FEDERAL, IN THE AMOUNT OF R$ 640.000.000,00 (SIX HUNDRED FORTY MILLION REAIS)

CREDITOR: