Pls I have an iPhone 5s. Bought it fairly used. The fone started acting up. The battery drains on standby in 4hrs from 100-dead. Changed the battery 3times but all is same. Restore the fone from backup countless times but still the same. The fone gets hot wen in use and can only last 2hrs with usage. Power saving still the same deleted all apps. Off location, background refresh. Still drains and gets hot like hell. So I wanna ask if anyone has experience this kind of issue b4 or anyone with a possible solution is allowed. Thanks