iPhone 7 Plus service record
problem
Drum battery pack, the screen has been propped up, occasionally crashes suddenly shut down.
analysis
Preliminary analysis of the battery is damaged.
service
Since the battery is not easily double strand after heating the back shell need to remove the battery.
After replacing the battery tested electricity while there, while no charging current is small, the system displays the battery damage.
Is not right, the battery is new.
Reanalysis
ALL