I'm using iQOO neo 10 for the last 20 days and the 5g connectivity was good but  for the last 3 days my 5g is not working properly shifting between 5g and 4g spontaneously. I have talked with the sim card operator they are saying everything is good on their side and also check with my brother's phone he is getting 5g in his iQOO neo 10r properly and not in my neo 10. Please anyone help me