Hello guys I recently buy a Lenovo A6000 but using it only for 1 month I am facing problems like its 4G slot of LTE and 3G slot didnt detect the sim and none of sim are working it was working I was using Jio Sim and Vodafone sim in it but now no sims are working in it I have checked it many times afterwards I complained in Lenovo Service Center but they are not replying my queries I am very disappointed by thier service as they have no concern for a Customer because its thier default problem they should react.