You can fix Samsung Galaxy Note 20 Ultra 5G Touch Lag,Screen Lag problems: 

1. Clean your mobile storage atleast keep half storage free 

Always keep your Samsung Galaxy Note 20 Ultra 5G storage free atleast half of your internal storage, if  128gb then make sure to have 60gb free space and then 512gb 200gb free is minimum needed,while your Samsung Galaxy Note 20 Ultra 5G mobile had increased storage usage it shows its effect on mobile performance,so make sure to have half storage free atleast to get maximum mobile Performance.

2. Never use Samsung Galaxy Note 20 Ultra 5G while charging

Stop using mobile Samsung Galaxy Note 20 Ultra 5G while in Charging mode It is normal for any mobile while charging internal mobile have strong electric field which makes your touch response non response or delay in Samsung Galaxy Note 20 Ultra 5G and its even not safe for your batter while using on charging it decreases your battery life 

3. Always use updated Apps from store 

Touch response may be also lags in Samsung Galaxy Note 20 Ultra 5G due to old version not updated app usage,if you facing lag during using particular app then go to store and once check either app got any update if got them update and it will fix Samsung Galaxy Note 20 Ultra 5G lags,it caused normal In many mobiles due to using of old versions.

4. Make sure to use Samsung Galaxy Note 20 Ultra 5G with dry hands without sweat or water

Touch will not respond if wet particles were present on Samsung Galaxy Note 20 Ultra 5G screen make sure to keep your screen always dry,if you done any work and if have sweat make sure to clean and use to avoid irresponsible touch response.

5. Remove if you were using broken screenguard or low quality

The broken screenguard present on Samsung Galaxy Note 20 Ultra 5G may have many chances to enter air and block in them which it cause touch issues for non response,even it may also cause due to using low quality screen guard on Samsung Galaxy Note 20 Ultra 5G  due to incomplete attach and bubble forming due to low quality.

6. Factory Reset

Even if you have facing any problems in  Samsung Galaxy Note 20 Ultra 5G after doing above things please try to factory Reset you phone and check of it sets right if it not settled then go to near Samsung Galaxy Note 20 Ultra 5G mobile showroom and repair it

7. Stop using while mobile is heated up heavily

After plaing havy games like pubg,Racing,COD etc...in Samsung Galaxy Note 20 Ultra 5G many will go through make it charge fastly without leaving mobile for sometime it leads to many issues like battery fast drainage,Samsung Galaxy Note 20 Ultra 5G  performance decrease, after playing heavy games make sure to wait for 10 minutes to charge 

8. Software update

Software update is the primary reason for many issues faced in mobiles if once Samsung Galaxy Note 20 Ultra 5G  got software update them it starts to stop working fully and we face many problems to fix them we have to check for updates regularly and done for better and fast experience

If you have any questions and comments please feel free to leave them below 😊  for more information gethere