But i should be work in Max power saving mode also........because alarm clock also works when phone is switched off

yes u r right it is working in mid power saving mode....Thank u

please check in your phone, becase in MID power saving mode also it is not working

but there is no option of restriction of alarm clock.....please check in your phone.............since alarm clock is working even in case phone is switch off........then why it is not working in power saving mode