Mobile phone structure generally includes the following 12 parts:

1, LENS LCD

Material: made of PC or acrylic;

Link: general use hook + back and front cover link.

Divided into two forms: A. only in the LCD above the local area; B. and the entire panel as a whole.

2, the upper cover (front cover)

Material: material is generally ABS+PC;

Link: with the lower cover generally uses the connection hook + screws (screws with diameter 2, recommend the use of locking screws to facilitate maintenance and disassembly, the lock screw must pay attention to the material, Kong Jing Boss). Motorola's phone is more love all with screws link.

Lower cover (Hou Gai)

Material: material is generally ABS+PC;

Connection: the connection mode of the card hook and screw bolt is connected with the upper cover;

3, button

Material: Rubber, PC + rubber, pure pc;

Connection: Rubber key mainly relies on rib positioning and boss positioning pin before long on the inner surface. Key Rubber can not accurately positioning, because: rubber is relatively soft, such as pad key on the positioning hole and positioning pin clearance is too small (<0.2-0.3mm), then pad key pressure down after the rebound can not be.

Three key advantages and disadvantages of the director of the lecture experience.

4, Dome

After pressing down, the circuit below it turns on, indicates that the button is pressed.

Material: there are two kinds, dome metal and dome Mylar, the former is the polyester film, the latter is the metal sheet. Dome Mylar cheaper.

Connect: glue directly on the PCB.

5, the battery cover

Materials are generally PC + abs.

There are two forms: the overall type, that is, the battery cover and the battery as a whole; split type, that is, the battery cover and the battery as a separate two parts.

Link: by hook + button push (plus one component) and rear link;

6, the battery cover button

Material: POM

Type more, in the use of direction, location, structure and other aspects of a larger change;

7, antenna

Divided into two types of exposed and hidden, in general, the former communication effect is better;

Standard parts, can be used to choose.

Link: metal spring plate is fixed on the PCB antenna can be directly stuck in between two shrapnel. Or a metal spring is fixed on the antenna, one end of the contact pressure on the PCB.

8, Speaker

Component of sound emitted during a call. For standard parts, can be used to choose.

Link: general is the use of sponge packages, fixed on the front cover (front cover is provided with a sound hole); through the contacts on the link with the PCB.

Microphone

Element for receiving sound at call. For standard parts, can be used to choose.

Links: generally fixed on the front cover, through contacts and PCB link.

Buzzer

Bell generating device. For standard parts, can be used to choose.

Fixed on PCB by welding. Housing has a sound hole to make it sound.

9, Jack Ear (headphone jack).

For standard parts, can be used to choose.

Directly fixed on the PCB through welding. Housing to stay in the hole for it.

10, Motor

Motor with an eccentric wheel to provide vibration function. For standard parts, can be used to choose.

Link: there is fixed on the back cover, but also fixed on the PCB. DBTEL is generally a long rib on the back cover to fix the motor.

11, LCD

Buy directly to use.

There are two kinds of fixed styles: A. fixed in the metal frame, the metal frame through four out of the foot stuck in the PCB; B. no metal frame, direct

And PCB link: one is directly through the conductive rubber contact; a cable form, the cable is inserted into the socket on the PCB.

12, case Shielding

Generally stamping parts, wall thickness of 0.2mm. Role: anti-static and radiation.

Other exposed components

Port test

Direct selection. Welding on PCB. On the housing to stay in the hole for it.

Card connector SIM

Direct selection. Welding on PCB. On the housing to stay in the hole for it.

Connector battery

Direct selection. Welding on PCB. On the housing to stay in the hole for it.

Connector charger

Direct selection. Welding on PCB. On the housing to stay in the hole for it.