format reset required after 4.3

[Mostafa3oda]

shall i do format reset after update 4.3 ? 

[_alexdon_]

It helps in some cases(if you have some problems after update).But it is not necessarily to factory reset.

[Mostafa3oda]

my proplem my sp lagging and many system apps working at same time ... 700 mp of ram used  

so what should i do ? 

[Danial-mach1]

if fill your phone is slow and a bit lagy do factory reset...i do factory rest also..and no problem exist

[_alexdon_]

Try either a factory reset or repair via sony update service.

[Mostafa3oda]

hmm ok i did back up for my app data and everything else using Back up & restore app already in phone .... when i do factory reset will i lose my restore ? 

[_alexdon_]

No,the backup is made on the google servers.But I suggest backing up with pc companion also.

[Mostafa3oda]

no i mean i used back up&restore app it's already come with android system and i made restore on sd card .. so when i use format reset will i lose this restore ? thnx for ur help 

[_alexdon_]

You need to restore after the factory reset,not before.