A mobile terminal, comprising: a housing , provided with a tray installation hole ; a circuit board , disposed inside the housing ; a tray retention portion , disposed inside the housing , wherein the tray retention portion faces toward the circuit board ; a card socket , disposed on the circuit board ; a tray , movably disposed in the tray installation hole and movably mating with the tray retention portion , wherein at least the tray or the housing is provided with an ejection hole ; a toggle piece , rotatably disposed at the tray retention portion and located between the card socket and the ejection hole , wherein one end of the toggle piece is an ejector pin action receiving end , the other end of the toggle piece is a tray ejection end , and the tray ejection end is used to apply an ejection force to the tray after a force is applied to the ejector pin action receiving end ; and an elastic detection piece having a free end and a tray action receiving portion , the tray being capable of applying a driving force to the tray action receiving portion to separate the free end from a detection terminal , and under the action of an elastic restoring force of the elastic detection piece , the free end is in contact with the detection terminal ; characterized in that the elastic detection piece and the detection terminal are disposed on the tray retention portion , wherein both the elastic detection piece and the detection terminal are located between the card socket and the tray installation hole ; wherein the toggle piece , the detection terminal , and the elastic detection piece are arranged in order along a direction parallel to the width direction of the tray installation hole . a housing , provided with a tray installation hole ; a circuit board , disposed inside the housing ; a tray retention portion , disposed inside the housing , wherein the tray retention portion faces toward the circuit board ; a card socket , disposed on the circuit board ; a tray , movably disposed in the tray installation hole and movably mating with the tray retention portion , wherein at least the tray or the housing is provided with an ejection hole ; a toggle piece , rotatably disposed at the tray retention portion and located between the card socket and the ejection hole , wherein one end of the toggle piece is an ejector pin action receiving end , the other end of the toggle piece is a tray ejection end , and the tray ejection end is used to apply an ejection force to the tray after a force is applied to the ejector pin action receiving end ; and an elastic detection piece having a free end and a tray action receiving portion , the tray being capable of applying a driving force to the tray action receiving portion to separate the free end from a detection terminal , and under the action of an elastic restoring force of the elastic detection piece , the free end is in contact with the detection terminal ; characterized in that the elastic detection piece and the detection terminal are disposed on the tray retention portion , wherein both the elastic detection piece and the detection terminal are located between the card socket and the tray installation hole ; wherein the toggle piece , the detection terminal , and the elastic detection piece are arranged in order along a direction parallel to the width direction of the tray installation hole . <EOS>