CELL PHONE
Cell phone makes it easy to communicate people all over the world. Technology makes it possible to choose when and where we want to be.It is now possible to work anywhere,reach anyone from your home by simply pressing phone button.
Cell phone common problems includes the following:
If Cell phone fails to power on. Keypad problem. Cell phone not charging. If phone drops into water. Partial contact. Blunt screen. Blinking of screen. Audio problem.Nothing is displayed on cell phone screen or message not clearly written or readable. Battery runs faster than it is supposed to . Blinking of network signal. Contact service provider. Loss of memory. No network. Unable to call out or receive calls.If cell phone fall down or drops into water.
DESCRIPTION GIVEN TO SOME OF THESE CELL PHONE PROBLEMS
1.If cell phone fails to power on: Power failure or dead phone.
2.Keypad problem:Keypad not responding.
3.Cell phone not charging:When the is connected to the phone,there is no indication of charging displayed.
4.If phone drops into water: If rain wets it or drops into water.
5.Partial contact:The phone is on but when receiving calls it switches off.
6.Blunt screen:The screen is blank or broken.
7. Blinking of screen:At times screen will display,whereas, sometime it does not .
8.Audio problem:If cell phone cannot ring out or someone cannot hear caller clearly.
9.Nothing is displayed on cell phone screen:Half or no message is displayed on the screen.
10.Battery runs faster than is supposed:Sometime battery is full but within few minutes it indicates low battery.
11.Blinking of network:This is when the network is frustrated.
12.Contact service provider:Some cell phone give this information when the memory IC is weak.
13.Loss of memory:This occure when an information stored is missing after sometime.
14.No network:If recognizes the sim card but cannot link to service.
15.Unable to call out or receive calls:Supposing the phone is having full network but fails to call out or to receive calls.
16If Cell phone falls down or drops into water: Either wet or droped into water.
SOLUTIONS TO THESE COMMON CELL PHONE PROBLEMS.
If cell phone fails to power on: i. Check on/off switch
ii. Check battery voltage.
iii.Check if it can charge.
iv. Bad power IC.
v. Do cross connection by using computer software to
flash it.
Keypad problem: i. Clean the keypad interface of the circuit board.
ii. Check if there is continuity on the interface.
iii. Replace the key with know working one of same make and model.
Phone not charging:i. Confirm is working by reading output voltage with meter.
ii. Check the fusible resistor and replace if broken,or charging pot.
If cell phone drops into water: i. Quickly remove the cell battery.
ii.. Dismantle the phone and allow it to dry.
iii. Use methylated spirit to clean power contact.
iv. Use hot air blower or Excellent alternative to dry the
main board.
Partial contact: At times, the problem lies on the bus heat or dust might have block the
Bus lines. The only solution is to remove the board, clean the bus line with
Fluid,while cleaning make sure you do not allow it to touch the components on the board.
Blunt screen: This problem arises when the cell phone is placed on heat contacts with the
phone after some minutes.
Blinking of screen: This problem could be caused by the flex of the phone, not from the main LCD. To solve this problem,change the flex.
Audio problem: Carefully unscrew the cell phone and clean the panel with methylated spirit. Clean the ringer with dry tissue.
Nothing is displayed on screen: Unscreen te phone and bring it out the screen as well, clean out the dust or sand that may be there,clear the interface very well with fluid and allow it to dry for some minutes and you pack it back carefully.
Battery runs faster than it supposed: If the is new charge it for three four hours to normalize performance. If it is an old battery,read from the voltage to the capacity.
