Phone speed and performance

[Bishalkumar]

I bought galaxy m31s before 2 years 

Now my phone performance is slow and lagging 

[NOOB_1ST_ACC]

Try factory data reset .

[rahul2006]

Try the way shown in the link I am also using m31s and it's working well with this method
https://youtu.be/KOIsrDgttoU

If I have solved the problem please mark me solution by clicking on 3 dots of my comment

[iamTstark]

Issue while using phone lagging a lot m32 after one ui 5 update