I'm the Apple user here. Except for iPhones. I prefer the One Plus One phone. Hubby lost his iPhone 5 so 2 years ago quickly bought a new iPhone 5 but that model had been out one year when purchased. As of today, the iPhone 5 is 3 years old. He updated his OS on it on Sept 19th I think it was but only told me last night that his battery was terrible. 100% when he wakes up and about 18% by 3pm where it used to last 2 days. I wish he had told me closer to the day he had updated as i could have reversed it back the the last OS but i understand it's now too late to do so??!! A quick peek online suggests so. I have the necessary file. I believe, for his model, MD293C/A. Don't really have time but I think I might be able to go back if I jailbreak it first but am pretty sure I cannot unless I do so? One reason I got him the iphone was so I didn't have to deal with fixing it every time he had problems with it as he hands all electronics to me to deal with but i am a bit swamped to be playing with fixing phones, etc. iPhone5,2_9.0.1_13A404_Restore.ipsw Have gone through his settings but all I can see that will save his battery is basically losing everything that makes it a good phone. I have often heard that these phones are only good for 3 year cycles and at some point, at 3 years, this happens. An OS update forces you to buy a new model. Can anyone comment as to whether that is essentially true for today it is looking as if that might be so and if that's the case, I am not sure I would want to buy him another one. Can anyone suggest from past experience if this is normal but that apple will come out with a fix for the battery in a few days, or.....is it essentially now a useless phone? T.I.A.