Dear Iqoo support, i like the performance/optimization in Iqoo mobiles so Recently, I bought a new IQOO z9x 5G (4/128GB variant) phone a month ago, after a week there were many lags in UI like apps aren't working/opening fast, UI lags/slow, game lags etc., i thought they will be fixed with an update. But its nearly 50 days, there was no update and the phone has full of laags in UI, issues with performance. Im not bothered about update. But I don't know what to do 😭....there is also a 3y old mobile in my home which is 4/64gb. it is working more efficiently than this new iqoo. So what's the problem??? 
I was literally disappointed with this....