November 2010

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This presentation has been prepared by KT Corp. This presentation contains forward-looking

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presented solely for your information and is subject to change without notice. No representation or

warranty, expressed or implied, is made and no reliance should be placed on the accuracy, actuality,

fairness, or completeness of the information presented.

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shall form the Basis of or be relied upon in connection with any contract or commitment.

Any decision to purchase shares of the Company should be made solely on the Basis of information,

which has been publicly filed with the Securities and Exchange Commission or the Korea Stock Exchange

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1. olleh kt 3Q10 Financial Summary

3Q10 Financial3Q10 Financial HighlightsHighlights

Revenue

4,821.2

5,233.4

4,986.4

5,233.4

3Q09 3Q10 2Q10 3Q10

8.6% 5.0%

(Unit: KRW bn.) Operating Profit

3Q09 3Q10 2Q10 3Q10

43.9%

-1.2%

413.1

594.5 594.5601.4

(Unit: KRW bn.)

EBITDA

350.6

-0.2%

Net Profit

3Q09 3Q10 2Q10 3Q10 3Q09 3Q10 2Q10 3Q10

3

1,163.8

1,311.7

12.7%

1,314.5 1,311.7-0.2% 351.4 350.6

343.7 2.0%

(Unit: KRW bn.)(Unit: KRW bn.)

2. Business Overview

WCDMA Migration & Subscription TrendWCDMA Migration & Subscription Trend

Wireless Wireless

(Unit: thousand)

14,547 14,712 14,904 15,016 15,368

3,4922,908

2,411

15,594

2,0121,641

A smooth migration to 3G and steady growth in the subscriber base along with escalating smartphone subscribers

Smartphone Subscribers TrendSmartphone Subscribers Trend

280

680

1,090

1,6502,500(E)% of smartphone

subscribers

10%7%

4%

15,831

(Unit: thousand)

Churn Rate & Net Addition TrendChurn Rate & Net Addition Trend

3Q09 4Q09 1Q10 2Q10

3.0%

2.7%

3.5%

Net

Addition(in thousand)

1Q09 2Q09 3Q09 4Q09 1Q10 3Q10

5,315 4,2953,492

9,232

(64%)

10,417

(71%)

11,412

(77%)

12,108

(81%)

12,957

(84%)

191112

352

Churn

Rate

3Q10

226

2.9%

13,582

(87%)

5

237

3.0%

2Q10

14,190

(90%)

2G subscribers 3G subscribers

4Q09 1Q10 2Q10 4Q103Q10

2%

iPhone Subscriber ProfileiPhone Subscriber Profile

Wireless Data Wireless Data –– iPhoneiPhone

(Unit : thousand)

1,150

1,410

% of subscribers with rate plan ofabove KRW 55,000

3Q10 ARPU* Comparison3Q10 ARPU* Comparison

51,000

62%

Positive impact on ARPU from iPhone subscribers while enhancing subscriber mix

(Unit : KRW)

1Q10 2Q10

500

810

Oct.103Q10

42.6%

35.0%

29.6%28.1%

* 3Q10 Average ARPU

excluding activation fee & interconnection charge

Total subscribers iPhone

31,559

8,031

20,064

Data

Data 150%

6

* For iPhone4, as of end of Oct.10,

60% are subscribing to KRW 55,000 or more.

StrategyStrategyNetwork Positioning (~2012) Network Positioning (~2012)

Wireless Data Wireless Data -- NetworkNetwork

Preparing for potential DE(Data Explosion) by dispersing traffics into 3W networks

� Expanding WiFi zones by utilizing strong fixed-line backbones

� 40K zones by 2010 (As of Nov., completed)

� 100K zones expected by 2011

Indoor/Hot Spots

(60%)Anywhere

(20%)

7

� 100K zones expected by 2011

� Improving accessibility of WiFi-WiBro

� Creating mobile WiFi zones

by placing Public Eggs at public transportation

such as subways, buses, etc.

� Extending WiBro coverage,

82 cities nationwide including major highways

(by March 2011)

� LTE scheduled to be launched in 2H 2011Major cites/

Highways/Subways

(20%)

BroadbandBroadband

(Unit: thousand)

Steady increase in subscriber base while reducing churn rate by offering bundling and competitive tariff plans

Subscribers and Churn Rate Subscribers and Churn Rate (Unit: thousand)Broadband BundlingBroadband Bundling

6,8186,953 7,090

7,1897,315

3Q094Q09 1Q10 2Q10 3Q10

3,043 3,403 3,675 3,966

Internet

44.6% 48.9% 51.8% 55.2% 56.9%

4,166

Churn

Rate

1.6% 1.5%1.4%

1.3%1.1%

Net Addition Market Share Net Addition Market Share

3Q09 4Q09 1Q10 2Q10 3Q10

1Q10 2Q10 3Q10

KTKT57.9%57.9%

LGU+

29.5%

SK

12.6%

* As for Jan. to Sept. 2010, MS only for 3 telcos.8

Bundled subscribers % of bundled subscribers

SubscribersSubscribers StrategyStrategy(Unit: thousand)

Fixed Line Telephony Fixed Line Telephony

Maintaining firm telephony (P+V) subscriber base with aggressive VoIP marketingand competitive tariff plans

1,269 1,701 1,972 2,222

19,819 19,753 19,586 19,477

Home Phone

2,490

19,432� Churn rate for PSTN continuously decline

� 1.4%(3Q ’09) � 1.1%(3Q ’10)

� Aggressive in VoIP subscriber acquisition

3Q09 4Q09 1Q10 2Q10 3Q10

18,550 18,052 17,614 17,255

PSTN VoIP PSTN +VoIP9

16,942

� Aggressive in VoIP subscriber acquisition

� No. 1 in subscriber net addition

� Strengthening competitiveness and targeting higher ARPU through introduction of new VoIP devices and contents package

� QOOK Hub Phone (launched in Oct.)

� Media Phone (scheduled in Dec.)

� Media Robot (scheduled in Dec.)

(Unit: thousand)SubscribersSubscribers

IPTVIPTV

Total Subs.

Focus on subscriber expansion with broader number of channels, VOD libraries and HD quality

907

1,172

1,569

1,790

1,183

1,092

1,3171,312

TV

ARPU ARPU (Unit : KRW)

9,269 9,861

10,675 10,5679,394

10,565

1Q09 2Q09 3Q09 4Q09 1Q10 2Q10 3Q10

10,271

Live- TV

Subs.

489

1,007

3Q094Q09 1Q10 2Q10 3Q10

415

1586

148 QOOK TV

Skylife

Subs.

10

322

StrategyStrategy

� Current services � 120 channels, 90K of VOD libraries (as of Nov.)

� Acquire platform Leadership by expanding subscriber base� Targeting 2M subscribers by end of 2010

� Abundant contents with ‘Open IPTV’ strategy� 13 Open TV channels and 3,800 VODs

Appendix

3Q10 Pl3Q10 Pl SummarySummary

(Unit: KRW bn.)

Revenue 5,233.4 4,821.2 8.6% 5,233.4 4,986.4 5.0% 15,042.1

Service Revenue 3,999.1 3,865.1 3.5% 3,999.1 3,991.7 0.2% 11,827.0

Sales of Merchandise 1,234.3 956.1 29.1% 1,234.3 994.7 24.1% 3,215.0

Operating Expense 4,638.9 4,408.1 5.2% 4,638.9 4,385.0 5.8% 13,293.5

Operating Profit 594.5 413.1 43.9% 594.5 601.4 -1.2% 1,748.6

3Q10 3Q09 YoY 3Q10 2Q10 QoQ ’10 Cumm

Operating Profit 594.5 413.1 43.9% 594.5 601.4 -1.2% 1,748.6

EBITDA 1,311.7 1,163.8 12.7% 1,311.7 1,314.5 -0.2% 3,874.5

Non-Operating Income 83.9 302.1 -72.2% 83.9 117.6 -28.7% 430.1

Non-Operating Expense 226.2 259.7 -12.9% 226.2 267.3 -15.4% 796.7

Income before taxes 452.1 455.4 -0.7% 452.1 451.7 0.1% 1,381.9

Net Income 350.6 351.4 -0.2% 350.6 343.7 2.0% 1,066.8

CAPEX 647.2 865.2 -25.2% 647.2 690.4 -6.3% 1,818.4

12

CAPEXCAPEX

1Q(Unit : KRW bn.)

WCDMA 51.9 140.9 124.9 317.7 563.4

FMC & WiBro 2.5 83.2 92.3 178.0 335.1

Internet & IPTV 184.4 117.3 97.4 399.1 557.4

2Q 3Q ’10 Cumm 2010(E)

13

PSTN & VoIP 12.9 30.8 18.6 62.3 261.9

Data & Other fixed services 90.1 120.0 117.9 328.0 421.9

Infrastructure 88.6 99.8 75.5 263.9 720.4

Overhead & others 50.4 98.4 120.6 269.4 339.9

Total 480.8 690.4 647.2 1,818.4 3,200

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