Unable to access Dialer related Apps and Watsapp


am using LYF EARTH 1 handset and from today morning i am not able to access Dialer related Apps and Watsapp. This happened after installing Telegram. I have Uninstalled Telegram however still not able to access dialer and Watsapp. It works if I disable the contact storage option but that will just destroy my purpose of carrying the mobile I will not able to access any contacts from my phonebook if I do so.. Any fix for this issue?