Mobile Phone problems & solutions and the way of checking

Mobile Phone problems & solutions and the way of checking

1.no network?

no network problems
One. outside network inside no network
Two. Networks jumping
Three. Networks are full, but no calls are connecting
Four. No network at all
Five. Networks come phone off
Six. Calling time no network
Seven. Emergency call

answers
One. Outside network inside no network
open phone check Antenna & Antenna tips
two.side buzzer ok
check whether they are connecting correctly or not
heat network section{Antenna tips pa rx tx rf 26mhz }
flash phone pm files
replace Antenna switch and p a

same solution for 2 question

Three. networks are full, but no calls are connecting
check another SIM card
reset and format
software UI settings
heat pa & rx & tx
heat RFIC
replace 26mhz

Four. no network at all
check another SIM card
check network manually settings
open phone check Antenna and tips
clean carbon dust
heat network section
follow the tracks make a jumper
software updates pm files
replace Antenna switch
replace pa change pa

Five. networks come phone is off
first check another battery
flash phone & UI settings
heat pa replaces pa
heat nearest components of IC
change pa

Six. All time no network
reset and format
heat network section
flash UI settings replace pa

Seven. emergency calls
reset and format
jumper Antenna tips short them
heat network section
flash UI settings


2. Did an operation fail camera?

Problems in China phones
one.camera not ready
camera module not ready
reset and format
open phone clean camera tips
if soldering tips
flash phone
heat nearest components
change camera

3. camera features not supported?

the camera on stand by
reset and format
flash phone & UI settings
open phone clean camera tips
replace camera
change camera

4 black or white display open camera?

problems 1
2 open camera phone hang
3 open camera phone restart
4 in Samsung phone camera review error
5 camera not clear
6 camera dim
7 reverse direction
8 images were not saving
9 images are not showing
10 open camera negative shades
11 cameras on del some data
12 in Sony Ericson open lenses cover
13 in Motorola phone camera busy try later
14 cameras working flashlight not working
15 camera general features not supported
16 camera shaking
answers
1 reset and format
flash phone
open phone clean camera tips
replace camera
change camera
same solution for 2 & 3 question
3 Samsung phone preview error
reset or format
check another strip if a slide
replace camera
flash phone
change camera
same solution for 5 & 6 question
clean camera glass
the clean camera lenses
replace camera
change camera

7 reverse camera
rotate phone
check camera settings
reset & format
flash phone

8 select one option
{ phone memory or MMC }
reset & format
flash phone
same solution for 9 questions

10 first check camera settings
keep in normal
reset and format
flash phone
replace camera
change camera

12 reset & format
check camera strip
make a jumper
change strip
same solution for 13 question
14 first check settings
reset and format
open phone check flash light
2side value ok
if the flashlight is black change, flashlight
check flash light tips
1side value 1 side nothing ok
check nearest components
if components damage changes from another dead board
heat components
make a jumper
same solution for 15 questions
16 open phone check camera
loose or tight
replace camera
heat nearest components
change camera

5 memory card not supported?

mammary card problems
1 memory card corrupted
2 MMC card was not showing
3 when inserted MMC phone restart
4 insert MMC phone hanging
5 insert MMC phone working very slow
6 insert MMC phone dead
7 in China phones MMC format
8 china phones were not showing
answers
1 first checks another MMC
reset and format
open phone clean MMC connector
heat nearest MMC components
flash phone
replace IC
change IC
same solution for 2 & 3 question
4 scan MMC in system
format MMC
reset and format
open phone clean MMC connector
heat nearest components
flash phone
same solution for 5 questions
6 format phone
format MMC

7 check another MMC
soldering MMC connector
heat nearest components
follow the tracks and make a jumper
change MMC connector

6 Insert SIM card?

check battery loose or tight
check another SIM card
check battery connector
check SIM connector values
1 side buzzer 1 side nothing 4 values
heat nearest components and IC
replace IC some phone diode
change IC
follow the track make a jumper

7 contact service?
first flash a phone
open phone check PCB conduction
and clean if dust
heat flash I c
heat power IC nearest components
after confirm flash customer phone
replace flash IC
change another flash IC from the dead board

8 Bluetooth problem?
Bluetooth problems
1 device not found
2 searching failed
3 sending failed
4 Bluetooth not on
Bluetooth not ready
Bluetooth error
Bluetooth on phone restart
8 delete some device
Bluetooth symbol was not showing

10 Bluetooth  busy

11 Bluetooth not active
answers
1 first check phone visibility
reset and format
open phone heat Bluetooth with paste
flash phone
same answer for 2
3 first check memory space
flash the phone and UI settings
heat Bluetooth section
replace Bluetooth antenna
change Bluetooth antenna
4 reset and format
open phone clean dust
heat Bluetooth section
flash phone
some answer for 5 6 10 11
7 reset and format
flash the phone
heat Bluetooth section

8 check device list and delete device
reset and format
flash phone

9 check data sending or not
reset and format
flash phone

9 local mode test mode?
open phone & clean charging section and hand free section
heat charging section and hand free section
replace a charging connector
change charging connector
flash phone


10.handsfree problem
?
first check a profile
reset phone
open phone clean carbon dust
heat nearest components near handsfree section
replace connector
change connector
flash phone
{ car mode phone }
reset phone
open phone clean dust
heat nearest components near handsfree section
replace connector
change connector
flash phone
{ insert hand free phone restart }
check another handsfree
reset and format
heat hf section
replace hf connector
change connector
check components if components damage changes components
{ handsfree symbol was not showing }
Check another hf
soldering hf connector
heat nearest components
replace connector change connector
some phones IC heat it replace and change it

11. phone heat?
calling time
normal time
charging time
while playing mp3 and video
first check another battery
open phone check charging connector
replace a charging connector
heat pa
replace pa


12. are phones hanging?

phone blinking
SIM insert phone restart
open any folder phone restart
phone working very slow
reset and format
flash phone
open phone clean carbon dust
heat flash IC
heat power IC nearest components
flash phone
replace flash IC
phone blinking
first check another battery
loose or tight
remove MMC and check
reset and format
flash phone
heat flash IC replaces flash IC

13 phones dead?
water damage
fallen down
working phone
first check three points
battery
on /off switch
battery connector

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