Apple Inc. 10-K form for the fiscal year ended 2022-09-24, page 21: 
Products and Services Performance

The following table shows net sales by category for 2022, 2021 and 2020 (dollars in millions):

|    |                                        |        |         |        |     |      |    |        |    |         |    |    |    |        |    |         |
|---:|:---------------------------------------|:-------|:--------|:-------|:----|:-----|:---|:-------|:---|:--------|:---|:---|:---|:-------|:---|:--------|
|  1 |                                        | 2022   |         | Change |     | 2021 |    | Change |    | 2020    |    |    |    |        |    |         |
|  2 | Net sales by category:                 |        |         |        |     |      |    |        |    |         |    |    |    |        |    |         |
|  3 | iPhone (1)                             | $      | 205,489 |        |     | 7    | %  |        | $  | 191,973 |    |    | 39 | %      | $  | 137,781 |
|  4 | Mac (1)                                | 40,177 |         |        | 14  | %    |    | 35,190 |    |         | 23 | %  |    | 28,622 |    |         |
|  5 | iPad (1)                               | 29,292 |         |        | (8) | %    |    | 31,862 |    |         | 34 | %  |    | 23,724 |    |         |
|  6 | Wearables, Home and Accessories (1)(2) | 41,241 |         |        | 7   | %    |    | 38,367 |    |         | 25 | %  |    | 30,620 |    |         |
|  7 | Services (3)                           | 78,129 |         |        | 14  | %    |    | 68,425 |    |         | 27 | %  |    | 53,768 |    |         |
|  8 | Total net sales                        | $      | 394,328 |        |     | 8    | %  |        | $  | 365,817 |    |    | 33 | %      | $  | 274,515 |

(1)Products net sales include amortization of the deferred value of unspecified software upgrade rights, which are bundled in the sales price of the respective product.
(2)Wearables, Home and Accessories net sales include sales of AirPods, Apple TV, Apple Watch, Beats products, HomePod mini and accessories.
(3)Services net sales include sales from the Company's advertising, AppleCare, cloud, digital content, payment and other services. Services net sales also include amortization of the deferred value of services bundled in the sales price of certain products.
iPhone
iPhone net sales increased during 2022 compared to 2021 due primarily to higher net sales from the Company's new iPhone models released since the beginning of the fourth quarter of 2021.

Mac

Mac net sales increased during 2022 compared to 2021 due primarily to higher net sales of laptops.
iPad
iPad net sales decreased during 2022 compared to 2021 due primarily to lower net sales of iPad Pro.

Wearables, Home and Accessories

Wearables, Home and Accessories net sales increased during 2022 compared to 2021 due primarily to higher net sales of Apple Watch and AirPods.

Services

Services net sales increased during 2022 compared to 2021 due primarily to higher net sales from advertising, cloud services and the App Store.

Apple Inc. | 2022 Form 10-K | 21







Question: Compare the year-over-year growth in iPhone sales for Apple Inc. between 2020 and 2021
Answer: The iPhone segment experienced substantial growth between 2020 and 2021. In 2020, iPhone revenue was approximately $137.8 billion. This increased to around $191.9 billion in 2021, reflecting a year-over-year growth of about 39.2%. The growth was primarily driven by the successful launch of the iPhone 12 series, which introduced 5G capabilities. The strong demand for the iPhone 12 in the holiday quarter of 2021 significantly boosted the segment's revenue.