how unlock my iphone telcel mexico

Contact telcel and see if they offer that option. Only the carrier can unlock it.

You can't. None of the carriers in Mexico offer official unlocking, thus there is no way to get your phone officially unlocked.

All mexican carriers are obliged by law to unlock your phone once your service plan is over.

See this article.

http://leonfelipe.sanchez.mx/desbloqueo-de-celulares