I have a brand new Mi 11x Pro and yes it supports dual band GPS - that means it comes with NavIC or Indian Regional Navigation Satellite System (IRNSS) support.
For the uninitiated, GPS - the American satnav (satellite navigation) system was de facto in many devices, and initially it connects over L1 band (single band SatNav) - as a result most Satnav support L1 Band only. Later L2 band was also introduced. L1 band means signals are transmitted over 1575.42 MHz band, while L2 band uses 1227.60 MHz. L2 band was exclusively for the Army.
Later L5 band (1176.45 MHz) came into consideration to use it as a Satnav carrier. The L5 band has a high bandwidth and transmission capability, which results in greatly improved anti-interference capabilities and noise management. GPS can take you within 20 meters of your target, while NaVIC is more precise — it will take you within five meters of the target.