Mobile Phone problems & solutions and the way of checking

Problems & Solutions Of Mobile Phone Repairs Guide

mobile chiplevel repairing

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 buzzers 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

Two. open camera phone hang

Three. open camera phone restart

Four. in Samsung phone camera review error

Five. cameras not clear

Six. cameras dim

Seven. reverse direction

Eight. images were not saving

Nine. images are not showing

Ten. open camera negative shades

11. cameras on del some data

12. in Sony Ericson open lenses cover

13. in the Motorola phone camera busy try later

14. cameras working flashlight not working

15. camera general features not supported

16. camera shaking

Answers

One 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 flashlight

2side value ok

if the flashlight is black change, flashlight

check flashlight 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 the SIM Card?

check battery lose 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 confirming 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

5. Bluetooth not ready

6. Bluetooth error

7. Bluetooth on phone restart

8. delete some device

9. 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 replaces and changes 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