Xiaomi usually offers a 12-month warranty for its phones to customers in its home country of China. However, this was turned on its head somewhat with the release of the Redmi Note 7. The company gave an extra 6 months' worth for this phone; now, it reportedly intends to roll this out to more of its future devices.
https://www.notebookcheck.net/Xiaomi-plans-to-make-18-month-warranties-a-standard-for-its-smartphones.414592.0.html