Celkon mobile is the chaina company. Celkon A15 is the one of the model in celkon. It is worst phone I using ever. There is no longer life and mobile is constantly strucked.the price range is between 4000-7000. Tha charging of the phone very slow compare to other phones.celkon is the releasing so many models but there is better phone nothing I have purchased or seen. Celkon A15 model phone is worst.