It's really a good method to help you backup your previous data, but it's a double-edged sword-you can't access this backup file or transfer anything to your iphone again.
Kuba ngempela indlela enkulu ukukusiza ugcine idatha yakho yangaphambilini, kodwa inkemba esika nhlangothi zombili - awukwazi ukufinyelela leli ifayela yokusekelayo noma kukhishwe noma yini kulo.