I Have Been Using Various iQOO devices Since 2021 ,Eg. iQOO Z3,iQOO NEO 7 & iQOO 12, Initially It Was Good,But After 2023 Every Month Patch Update Comes With New Issue At All,iQOO Z3 was Performed Too Well Since I Updated It On September Month ,I Even Checked Battery Performance By Calculating It On Various environment Such As Gaming & Photography, Medium Usage Its Battery Was Last Longed For Upto 3 Hours (Max) In 60 Fps Gaming and 2 Hours In Photography And 12 Hours (Max) In Normal Usage But After Updating It To The Latest Version Even it was Last Long for 1:30 Hours (Max) In Gaming & 4 Hours In Normal Usage.It been November Still I Haven't Recieved October Patch Update For iQOO Neo 7...Same Issues Happening With iQOO NEO 7 & iQOO 12 ,Im Facing Many Issues With Software Such As 

*Linux Usb Tethering Issue

*Overheating In A Short Time Of Period

*Huge Battery Draining

*Bluetooth Auto Disconnecting Issue

*Touch Sampling Issue While Gaming

*Blurry Camera & Issue with Auto Focus

Such Features Causing Disappointment To Purchase iQOO Devices In Future 

*Battery Health Option Removed

*Can't Able To Unlock Bootloader

*No Monitoring Feature (FPS, CPU & GPU Usage, Temperature)

*Removal Of YouTube Background Play Feature

*Removal Of Legacy Control Panel Of Fun touch Os (Bottom to Top)

*Many iThemes Features Are Not Supporting For Even High End Devices (iQOO 12)

Conclusion,

However iQOO Devices Are Hardware & Build Quality Wise Performing Good ,I would Rate 9/10 For Hardware, But The Problem Is With Software,Even I Wouldn't Rate 3/10 Definitely Funtouch Os Isn't Suitable For Gaming In My Opinion.Please Improve Software.

Also If You Don't Mind Kindly Vote Below,If You are Satisfied With Software UI & Software Update ,It May Help Them To Improve The Software.