Didi with its sister company may not be a threat right now but Hwawei is which is placed a distant third in global sales. It has conquered many EU markets by giving them discounts to the networks that use Hwawei network. Hwawei is one of the 3 companies that have the advanced network LTE and they're working on the next generation.
reasons for their success: 1. Huge home market. 2. Cheap and qualified
engineers. 3. Government and local government encourage business. 4. No
need to report to their stock holders.