want to update lumia 535 to windows 10
i have lumia 535. want to update it OS to windows 10. want to know if its easy to update it to 10 and if the data and apps will be as it is after update? ex. if the whatsapp msgs will be lost or i will have the whatsapp as it was before installation. also if the update will not be sucessful if i can get 8.1 back?
i have lumia 535. want to update it OS to windows 10. want to know if its easy to update it to 10 and if the data and apps will be as it is after update? ex. if the whatsapp msgs will be lost or i will have the whatsapp as it was before installation. also if the update will not be sucessful if i can get 8.1 back?