Operating Revenue (Tables)

12 Months Ended

Dec. 31, 2020

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Disaggregation of operating revenue

	2020 Million		2019 Million		2018 Million
Revenue from telecommunications services
Voice services		78,782		88,624		108,083
Data services
-SMS & MMS		29,485		28,648		28,800
-Wireless data traffic		385,679		384,999		383,297
-Wireline broadband		80,808		68,835		54,285
-Applications and information services		101,038		82,543		75,701
Others		19,900		20,743		20,741
		695,692		674,392		670,907
Revenue from sales of products and others		72,378		71,525		65,912
		768,070		745,917		736,819

Summary of Contract Assets

The Group has recognized the following assets related to contracts with customers:

	Note	As of December 31, 2020 Million			As of December 31, 2019 Million
Contract assets	(i)		5,401			6,567
Less: current portion			(3,841	)		(5,003	)
Non-current portion recorded in other non-current assets			1,560			1,564
Contract costs recorded in other non-current assets	(ii)		14,487			15,987
Total other non-current assets related to contracts with customers			16,047			17,551

Summary of Significant Changes in Contract Assets Relating to Contracts with Customers

	Contract assets
	2020 Million			2019 Million
Gross carrying amount:
As of January 1		6,883			6,831
Increase resulting from satisfaction of performance obligation		6,948			6,886
Transfer to accounts receivable		(8,185	)		(6,834	)
As of December 31		5,646			6,883
Loss allowance:
As of January 1		(316	)		(342	)
Changes during the year		71			26
As of December 31		(245	)		(316	)
Net book value:
As of December 31		5,401			6,567

Summary of Significant Changes in Contract Costs Relating to Contracts with Customers

	Contract costs
	2020 Million			2019 Million
As of January 1		15,987			6,975
Addition		18,534			24,149
Amortization for the year		(20,034	)		(15,137	)
As of December 31		14,487			15,987

Summary of contract liabilities

Contract liabilities are presented in deferred revenue in the consolidated balance sheets. Changes in contract liabilities are as follows:

	Contract liabilities
	2020 Million			2019 Million
As of January 1		57,431			62,812
Opening balance recognized in the consolidated statements of comprehensive income for the year		(53,802	)		(56,409	)
Other net changes for the year		76,050			51,028
As of December 31		79,679			57,431