My original iPhone (2007) was handed down through my family, with its original battery which was still adequately working for eight years, until it was finally retired after being used as the equivalent of an iPod touch (no cellular phone connection - WIFI connection only for kids games) by my then five year old granddaughter. At that time that original battery would still take an 80% charge which would last about ten hours.
I subscribe to the upgrade program, so will be getting an 11, but I have several older iPhones from before that program that I have used for work because I work with classified information and, since I don’t get the Hillary exemption, if I were sent classified email by mistake I won’t have my personal phone taken and destroyed by the gubmint.
Just last week moved from my iPhone 4 to one of the iPhone 5’s we have for work.
The fact that libtards and chest thumping virtue signalers here preen over upgrading a damn phone I am so glad I am upgrading to an 11!