Phone lost camera function, keyboard, file manager

[AC Question]

My cousin gave me a LENOVO A580i, a Chinese smartphone which I assumed 'bricked' as it literally have no function,like a brick. Maybe he was rooting the phone and somehow messed up. There is no camera function, no keyboard to type for messaging and no file manager. I lost my previous phone and if I could repair this one, I would be really relieved. So please, please someone suggest me the way to repair this damn phone. any suggestion is really really appreciated.

peace