No way to replace battery of iPhone... 'r'you sure?!?
20 - 30 minutos
I suspected that the battery was not lasting as the first days anymore
I'm used and confident about opening electronics devices, even if sometimes it simply... doesn't work :-}
But I was somehow afraid to open the iPhone, for it is very very compact and robust and you feel you could break it or not be able to close it perfectly...
BUT, with great instructions and detailed notes, evrything was fine and - I'd say - enjoyable!
If I was forgetting anything, some notes popping out from iFixIt reminded it to me!
(not kidding, really!)