Friends plz like my post so the Samsung will see it it is Priceless 殺Hello Samsung .. I have recently bought M21 but while I switch from one app to another or open an app the UI lag annoys me and while opening a new window it lags a lot which is dis...

Hello Samsung .. I have recently bought M21 but while I switch from one app to another or open an app the UI lag annoys me and while opening a new window it lags a lot which is annoying please fix it ... 

Hello Samsung .. I have recently bought M21 but while I switch from one app to another or open an app the UI lag annoys me and while opening a new window it lags a lot which is annoying please fix it ...