I have problems with my phone, i accidentally deleted all my contacts, when i was deleted some data from manage applications, and i deleted all, now i tried to enter all my contacts again but when a press done, and says contact saved, nothing appears in my book of contacts, just my number, i tried to send them from my whatsapp to my book of contacts but it seems that the same applies, so what can i do?, i turn it off, remove the battery and the SIM card, but is the same, please if someone can help me i will appreciate a lot, thanks.
