425

Filed by Starburst II, Inc. Pursuant to Rule 425

Under the Securities Act of 1933

And Deemed Filed Pursuant to Rule 14a-12

Under the Securities Exchange Act of 1934

Subject Company: Sprint Nextel Corporation

Commission File No.: 001-04721


Synergy Overview
SoftBank Corp.
May 2013


Cautionary Statement Regarding Forward Looking Statements
This
document
includes
“forward-looking
statements”
within
the
meaning
of
the
securities
laws.
The
words
“may,”
“could,”
“should,”
“estimate,”
“project,”
“forecast,”
“intend,”
“expect,”
“anticipate,”
“believe,”
“target,”
“plan,”
“providing guidance”
and
similar
expressions
are
intended
to
identify
information
that
is
not
historical
in
nature.
This
document
contains
forward-looking
statements
relating
to
the
proposed
transactions
between
Sprint
Nextel
Corporation
(“Sprint”) and SoftBank Corp. (“SoftBank”) and its group companies, including Starburst II, Inc. (“Starburst II”), and the
proposed acquisition by Sprint of Clearwire Corporation (“Clearwire”). All statements, other than historical facts, including, but
not limited to: statements regarding the expected timing of the closing of the transactions; the ability of the parties to complete
the
transactions
considering
the
various
closing
conditions;
the
expected
benefits
of
the
transactions
such
as
improved
operations, enhanced revenues and cash flow, growth potential, market profile and financial strength; the competitive ability and
position of SoftBank or Sprint; and any assumptions underlying any of the foregoing, are forward-looking statements. Such
statements are based upon current plans, estimates and expectations that are subject to risks, uncertainties and assumptions.
The inclusion of such statements should not be regarded as a representation that such plans, estimates or expectations will be
achieved. You should not place undue reliance on such statements. Important factors that could cause actual results to differ
materially from such plans, estimates or expectations include, among others, that (1) there may be a material adverse change
of SoftBank; (2) the proposed financing may involve unexpected costs, liabilities or delays or may not be completed on terms
acceptable to SoftBank, if at all; and (3) other factors as detailed from time to time in Sprint’s, Starburst II’s and Clearwire’s
filings with the Securities and Exchange Commission (“SEC”), including Sprint’s and Clearwire’s Annual Reports on Form 10-K
for
the
year
ended
December
31,
2012,
and
other
factors
that
are
set
forth
in
the
proxy
statement/prospectus
contained
in
Starburst II’s Registration Statement on Form S-4, which was declared effective by the SEC on May 1, 2013, and in other
materials that will be filed by Sprint, Starburst II and Clearwire in connection with the transactions, which will be available on the
SEC’s web site (www.sec.gov). There can be no assurance that the transactions will be completed, or if completed, that such
transactions will close within the anticipated time period or that the expected benefits of such transactions will be realized.
All forward-looking statements contained in this document and the documents referenced herein are made only as of the date
of
the
document
in
which
they
are
contained,
and
none
of
Sprint,
SoftBank
or
Starburst
II
undertakes
any
obligation
to
update
any forward-looking statement to reflect events or circumstances after the date on which the statement is made or to reflect the
occurrence of unanticipated events except as required by law. Readers are cautioned not to place undue reliance on any of
these forward-looking statements.


1
SoftBank / Sprint Synergy Framework
SoftBank projects more than $2bn of average annual Sprint operating
expense
synergies
from
2014
2017
with
an
annual
run-rate
of
over
$3bn
by 2017
SoftBank also projects Sprint capital expenditure synergies of 32% to 36% of
Sprint’s planned network investment through 2017
SoftBank’s synergy views are informed by 9 months of pre-announcement
diligence and continuing post-closing planning discussions with Sprint
management
Synergy projections are driven by pro forma network and subscriber scale benefits
as well as implementation of SoftBank operational / technology expertise
SoftBank’s synergies plus its $8bn primary investment will accelerate Sprint’s
ongoing turnaround and position it to become the U.S. wireless industry’s
technology and operational leader


2
SoftBank / Sprint OpEx Synergy Drivers
Item
% of 2014 -
2017
OpEx Synergies
Description
Device / Accessory
Procurement
38%
-
Joint development through SoftBank global vendor relationships
-
Develop comprehensive portfolio of emerging products
-
Volume incentives / discounts from joint purchasing power
Network OpEx
19%
-
Implementation of SoftBank traffic management and network technology
best practices
-
Insourcing of network monitoring and maintenance
Churn Improvement
16%
-
Improved credit screening and pricing structures
-
Results in CPGA savings
IT
13%
-
Joint development of cost-efficient IT platform
-
Consolidation of IT development and operations resources
Customer Care
14%
-
Implementation of SoftBank care service structure
-
Improvement of average handling times
Source: SoftBank Projections.
1
Includes
handsets,
connected
devices,
accessories,
insurance
and
related
costs.
SoftBank projects average annual operating expense synergies of more than $2bn
from 2014 –
2017 with an annual run-rate over $3bn by 2017
1


3
SoftBank / Sprint CapEx Synergy Drivers
Item
% of 2014 -
2017
CapEx Synergies
Description
Vendor Scale Benefits
42%
-
Equipment / construction incentives and discounts from joint
purchasing power
Traffic Management
7%
-
Implementation of SoftBank traffic management efficiencies
-
Capacity improvement reduces new sites / network capacity
Core Capacity Build
33%
-
Future network capacity requirements due to growth in
subscriber data traffic
-
Leverage joint purchasing power and SoftBank relationships
8T8R Deployment
18%
-
Implementation of new technology for TDD LTE BTS
-
Reduces required new sites
SoftBank
also
projects
to
generate
capital
expenditure
synergies
of
32%
to
36%
of
Sprint’s planned network investment through 2017
Source: SoftBank Projections.


4
Device / Accessory Procurement OpEx Synergies
(% Discount)
Joint development
through SoftBank
global vendor
relationships
Develop comprehensive
portfolio of emerging
products
Volume incentives /
discounts from joint
purchasing power
Source: SoftBank Projections.
Note: Reflects % discount to projected budget.
1
Includes
handsets,
connected
devices,
accessories,
insurance
and
related
costs.
1
3.3%
5.7%
8.3%
8.4%
2014
2015
2016
2017


5
IT OpEx
(% of Service Revenue)
Consolidation of
development
resources
Independence
from vendors
Joint development
of cost-efficient IT
platform
Source: SoftBank Projections.
1
SoftBank Mobile IT expense as % of SoftBank Mobile service revenue.
Historical Performance
1
Opportunities
1.9%
1.5%
1.2%
1.0%
0.8%
0.7%
0.6%
2006
2007
2008
2009
2010
2011
2012
66%
Improvement since
Vodafone Acquisition


6
Customer Care OpEx
(Customer Care per Subscriber)
Improved handling
times
Enhanced care
service structure
Paperless operations
Collections rate
improvement
Source: SoftBank Projections.
1
SoftBank Mobile customer care expense per subscriber.
Historical Performance
1
Opportunities
$11.8
$11.7
$10.2
$9.5
$8.4
$8.2
$7.0
2006
2007
2008
2009
2010
2011
2012
41%
Improvement since
Vodafone
Acquisition


7
Involuntary Churn OpEx
(% Involuntary Churn)
Source: SoftBank Projections.
1
SoftBank Mobile 3G involuntary churn.
Improved credit
analysis
New pricing
structures
Involuntary churn
reductions
CPGA savings
67%
Improvement since
Vodafone Acquisition
Historical Performance
1
Opportunities
0.24%
0.33%
0.21%
0.15%
0.11%
0.11%
0.08%
2006
2007
2008
2009
2010
2011
2012


8
Network Scale CapEx Synergies
(% Discount)
Network equipment
and construction
incentives / discounts
from joint purchasing
power
Focus on post-Network
Vision build
Source: SoftBank Projections.
Note: Reflects % discount to network investment plan, excluding core network equipment.
26.0%
27.6%
21.1%
18.7%
2014
2015
2016
2017