1. Acer Inc.
2. Apple Inc.
3. ASUSTeK Computer Inc.
4. AT&T Inc.
5. Canon Inc.
6. Dell Inc.
7. Hewlett Packard Enterprise Development LP
8. Lenovo
9. OPPO
10. Panasonic Holdings Corporation
11. Samsung Electronics Co. Ltd.
12. Sony Mobile Communications Inc.
13. Toshiba Corporation
14. Vivo Mobile Communication Co. Ltd.
15. Xiaomi Corporation