Also known as the Moto G3—an Android smartphone released by Motorola in July 2015. It serves as an economical alternative to Motorola's flagship phones. Model XT1540 in the US, with dual-sim and "Turbo Edition" variants sold in other regions.
@akash03 either replace the headphone jack or check the copper "legs" to make sure they are still making contact. Either use this video or this one in reverse to get to the jack. It is a modular jack and does not require soldering etc.