Waterproof structure and mobile phone using the same

A mobile phone comprising:

• a waterproof structure comprising:
• a first casing comprising two opposite sides, two first guide grooves being defined in the first casing with one of the first guide grooves is defined at a portion of the first casing adjacent to one of the opposite sides of the first casing and the other of the first guide grooves is defined at another portion of the first casing adjacent to the other of the opposite sides of the first casing;
• a second casing comprising two opposite sides, two second guide grooves being defined in the second casing with one of the second guide grooves is defined at a portion of the second casing adjacent to one of the opposite sides of the second casing and the other of the second guide grooves is defined at another portion of the second casing adjacent to the other of the opposite sides of the second casing;
• a waterproof pad arranged between the first casing and the second casing;
• and
• two pinch strips engaged with the first guide grooves and the second grooves on either side of the first casing and the second casing to assemble the first casing, the waterproof pad, and the second casing together;
• a first limit stop provided at an end of each of the first guide grooves, a second limit stop provided at an end of each of the second guide grooves;
• each of the first guide grooves comprises a sloping bottom, and each of the second guide grooves comprises a sloping bottom, and an end of each of the first guide grooves adjacent to one of the first limit stops and one of the second limit stops are shallower than another end of each of the first guide grooves away from one of the first limit stops and one of the second limit stops, and an end of each of the second guide grooves adjacent to one of first limit stops and one of the second limit stops is shallower than another end of the second guide groove away from one of the first limit stops and one of the second limit stops, shapes of the pinch strips are corresponding to shapes of the first guide grooves and the second guide grooves.