From A few day ago, my phone  has been fluctuations on the network on 5g to 4g. Even though my phone previously working 5g smoothly at same area where I'm living, but now days my phone has got issue about network and also it is getting trouble for the network speed.

Some time it is turn off all the network like phone has no any network. 

Without turn on flight mode, my phone has not support any network. So that because I'm to irritate from these problem. I would to request the IQOO that give update to IQOO NEO 6 model amd fixed all these issues as possible as.

Hope your answer will soon.