No, the Xiaomi Mi Max 4 does not support 5G as it comes with the Qualcomm Snapdragon 730G processor which is not made for 5G.
5G is a technology which is yet to make a presence in the market and even if it does, the high-end phones would be the first to get it.
And to mention, there are some phones with 5G.
Check Full Device Specifications Xiaomi Mi Note 10 Pro
Xiaomi Mi Note 10 Pro is expected to be launched in India by 25 Dec. 2019.
The device is also expected to release with a hefty price tag of about RS.51,190.
In the meantime,do not forget to find all the detailed specifications and other latest updates regarding Xiaomi Mi Note 10 Pro here.