data and battery lose over night

[emmitt]

battery lose over night from 100% to 9% happened on may 23rd and the same no june 23ed and27th also lost

calander data history from  june the 10th .[all work and inportante dates lost]

      june the 10th went last night.[i think it might be microsoft.]

[MI5]

I’d make sure you have everything backed up and do a factory reset.
Are you on win 10 developers preview program?

[Bambino]

@emmitt You need to tell us what phone you have (I'm guessing it's a Nokia), how old it is, did you have your data backed up, have you contacted Nokia support? https://www.nokia.com/en_gb/phones/support

[jonsie]

Everything should be backed up automatically but check this first making sure the settings are correct for One Drive. Then as advised,  a factory reset should sort it for you. Also look in battery settings to see what is draining the battery. Possibly a rogue app but a reset seems to be needed.

[emmitt]

thanks

[emmitt]

hi

 microsoft lumia 435 new september 2015

[emmitt]

i have lost historical info after june the 14 th including ref numbers and anniversaries any advice last date went this morning     

                             emmitt

[Cleoriff]

Hi @emmitt.

Have you tried rebooting your phone? Have you backed up all your info regularly?

Not sure what phone you have but generally speaking a simple turn off and back on will help to resolve various issues

[emmitt]

thank you give it a try

[EmilieT]

Hi @emmitt, and welcome to the forum  Did you get a chance to give @Cleoriff's advice a go yet? Please let us know if it helped recover your calendar's info, if others are in the same situation it'll be very useful to hear how you got it sorted