Disclosure of estimated useful lives for property, plant and equipment

The ranges of estimated useful lives are as follows:


Mobile network infrastructure	4–20	years
Fixed network infrastructure	3–25	years
Call center equipment	4–8	years
Buildings	21–25	years
Equipment, fixtures and fittings	2–10	years
Motor vehicles	4 – 6	years
Electricity power plant	20	years
Leasehold improvements	3 – 5	years

Disclosure of estimated useful lives for intangible assets

Amortization is recognized in the statement of profit or loss on a straight-line basis by reference to the license period. The range of estimated useful life for telecommunication licenses are as follows:

Telecommunications licenses

6 – 20 years

Statement

Disclosure of estimated useful lives for intangible assets

Amortization is recognized in the statement of profit or loss on a straight-line basis over the estimated useful lives. The ranges of the estimated useful lives for other intangible assets are as follows:


Indefeasible right-of-use	15	years
Transmission line software	5-10	years
Subscriber acquisition cost	2-7	years
Electricity production license	20	years