I can not see who's calling me.

[NicolasChaparro]

Translation via Google translate:
At the moment of receiving a call I get as unknown, I have a Xperia XA, try importing and exporting contacts and there was no solution, someone who is knowledgeable in the subject or who can help me with some similar experience? Thanks a lot already!

Al momento de recibir una llamada me sale como desconocido, tengo un Xperia XA, intente importando y exportando contactos y no hubo solución, alguien que sea entendido en el tema o que me pueda ayudar con alguna experiencia similar? Mil gracias desde ya! 

[Qatrium · Accepted solution]

@NicolasChaparro

I used Google Translate to find the meaning of your message. Kindly post your future questions/feedbacks in English so we can assist you, this is an English based forum.

Try clearing the Phone app's data (this might erase your recent call logs so if you need them, backup using Xperia Companion before proceeding):

- Go to Settings -> Apps -> Phone -> Force stop, then go to Storage -> Clear data and restart your phone.

[NicolasChaparro]

Thanks !