how to access my iPhone to free some space to allow system update to be completed
My phone suddenly shut off and apple logo is on the screen, disappear every 10 minutes then come back to the screen, when I try to plug in to my MAC, it ask me either to update or restore. because system needs 4 GB and the free space is 112 MB only. how to access the iPhone to free some space without loosing my data !
iPhone 6, iOS 12