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Hi, while I was removing a swollen battery from my iPhone 5s I involuntarily scratched the aluminium foil underneath it (see photos below). Do you think it is safe if I patch it with electrical tape? If not, what do you recommend? Thanks heaps in advance

Check buttons functionality and flash first, from here I can see a little damage on the flex cable. If something is not working replace it. iPhone 5s Audio Control and Power Button Cable If everything works fine, just use electrical tape to cover the scratched cable.