saleem Mobile Phone 15

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MOBILE NOTES PRACTIALS

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NOTES

1} HOW MANY TYPES OF MOBILE PHONES ? a} four types of mobile phones Strait flap slide rotrate 2} THREE TYPES OF DISPLAY? a} soldering connector strip 3} FIVE TYPES OF MEMMORY CARDS? a} micro sd d v n c p for 6600 6670 6680 6681 7610 3230 n72 n70 etc.... mini sd n73 n93 i mate mobiles etc m2 sony eriscon pro duo sony eriscon w810i p990i


cameras 1} there are three types of camera connector strip soldering

mobile problems Th ere are 23 are 23 twenty three problems in mobile phones 1} speaker H/W 2} ringer ringer H/W 3} mic H/W 4} no led key board and display H/W 5} no charging H/W 6} phone on but no display H/W & S/W 7} phone on but white display H/W & S/W 8} battery low when calling after show full battery H/W 9} restart when calling H/W & S/W 10} no network H/W & S/W 11} operaction failed camera H/W & S/W 12} camera features not supported H/W & S/W 13} black or white display on camera H/W & S/W 14} memmory card not supported H/W & S/W 15} insert sim card H/W 16} keypad problem H/W & S/W 17} contact service H/W & S/W 18} bluetooth problem H/W & S/W 19} local mode or test mode H/W & S/W


20} handfree problem H/W & S/W 21} phone heat H/W 22} phone hanging H/W & S/W 23} phone dead H/W & S/W

problems and there soluction and there cheakings . 1} speaker cheaking ? a} if two side buzzer then its ok on mother board tips two side same value then ok speaker problems 1 low sound 2 no sound 3 disturbance sound answers 1 low sound first cheak volume full or not if volume is full then also low sound change it 2 disturbance sound open phone clean dust clean speaker then also not ok change it 3 no sound cheak the volume if volume is full thn open the phone cheak the speaker 2 side buzzer if not


change it __________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ ___ 2} ringe ringerr chea cheaking king ? a} if two side buzzer then its ok on mother board tips two side same value then ok ringer problem? 1 low sound 2 no sound 3 disturbance sound answers 1 low sound first cheak volume full or not if volume is full then also low sound change it 2 disturbance sound open phone clean dust clean speaker then also not ok change it 3 no sound cheak the volume if volume is full thn open the phone cheak the speaker 2 side buzzer if not change it __________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _____ __


3} mic cheaking ? a} one side value one side nothing then its ok mic problems ? 1 low sound 2 no sound 3 disturbance sound e c o sound answers 1 low sound open phone clean carbon dust if no result change mic 2 disturbance disturban ce sound e c o sound open phone clean carbon dust if no result change mic 3 e c o sound open phone clean carbon dust if no result change mic 4 no sound open phone clean carbon dust if no result change mic light heat nearest components cheak p c b tips one side value one side nothing ok from ground one side value one side buzzer two side nothing tracks missing two side buzzer tips short two side nothing on pcb mick follow the track make the jumper jumper heat nearest components if components damaged replace


it from dead p c b heat nearest components replace ic diode or capacitor __________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ _ 4} no light in key board & display ? answer first cheak phone settings lights on or off if it is not working open the phone cheak display connector and clean display connector cheak strip & strip connector put new strip cheak another display cheak p c b condiction clean p c b with ip heat light section nearest booster coil some phones no ic only diodes make a jumper replace ic or diode change ic or diode __________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ 5 not charging ? not charging problems 1 charging not supported 2 chargi charging ng symbol symbol showing showing but not not chargin charging g


3 charging not showing 4 not charging 5 charging time phone heat 6 charging time phone off in china phones 1 bad contact charger 2 chargi charging ng error error 3 connect usb 4 remove charger 5 some time charging some time not charging answers first cheak charger cheak another battery cheak charging connector 1 charging not supported first cheak charger cheak another battery open phone phone cheak cheak p c b condiction if carbon or dust clean it cheak charging tips two side values ok two side buzzer tips short from ground cheak fuse and coil fuse two side buzzer ok coil two side buzzer ok heat charging section make a jumper replace ic or diodes flash phone same answer for 2 3 4 question


__________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ ____ 6 phone on but no display ? problems prob lems 1 half display 2 displa display y inside inside dots dots 3 display not clear 4 display dim 5 display broken answers blue display sometime showing some time not showing open phone cheak display connector & clean if soldering display resoldering cheak another display if same problem resoldering display connector or change display connector if same problem in slide or rotate pnone change strip same soluction for 2 3 4 5 question ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ ______ ___ 7 phone on white display ? answer first cheak phone on or off if phone is off hard ware problem if phone is on software problem


incomming out going working hard ware problem flash u i settings open phone cheak display connector if dust or carbon clean it cheak another display resoldering display connector heat nearest components cheak components if components damage replace from another dead board if components ok then heat display ic replace ic and change display ic ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _____ __ 8 battery low when caling after show full battery ? answers first cheak another battery cheak weather it is loose or tight reset and format open phone cheak board condiction & clean dust heat power amplifier change power amplifier ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ ____ 9 restart when calling ? answer first cheak another battery reset only flash the phone open phone cheak board condiction & clean


cheak battery loose or tight heat nearest components heat pa replace pa ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _____ __ 10 no network ? no network problems 1 out side network inside no network 2 networ network k jumping jumping 3 network is full but no calls are connecting 4 no network at all 5 network comes phone off 6 calling time no network 7 emergency call answers 1 outside network inside no network open phone cheak antina & antina tips 2side 2side buzzer buzzer ok ok cheak wheather they are connecting correct or not not heat network section { antina tips pa rx tx rf 26mhz } flash phone pm files replace antina switch and p a same soluction for 2 question 3 network is full but no calls are connecting cheak another sim card reset and format software ui settings


heat pa & rx & tx heat RFIC replace 26mhz 4 no network at all cheak another sim card cheak network manually settings open phone cheak antina and tips clean carbon dust heat network section follow the tracks make a jumper software updates pm files replace antina switch replace pa change pa 5 network comes phone is off first cheak another battery flash phone & ui settings heat pa replace pa heat nearest components of ic change pa 6 call time no network reset and format heat network section flash ui settings replace pa 7 emergency calls reset and format jumper jumper antin antina a tips tips short short them them heat network section


flash ui settings ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ ______ __ 11 operaction failed camera ? problems prob lems in china china phone phones s 1 camera not ready camera module not ready reset and format open phone clean camera tips if soldering resoldering tips flash phone heat nearest components change camera ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _____ _ 12 camera features not supported ? camera on stand by reset and format flash phone & ui settings open phone clean camera tips replace camera change camera ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ _______ ___ 13 black or white display open camera ? problems prob lems 1 2 open open camera camera phone phone hang hang 3 open camera phone restart 4 in samsung phone camera review error


5 camera not clear 6 camera dim 7 reverse direction 8 image not saving 9 image not showing 10 open camera negative shades 11 camera on del some data 12 in sony erriscon open lense cover 13 in motorolla phone camera busy try later 14 camera working flash light 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 soluction for 2 & 3 question 3 samsung phone preview error reset or format cheak another strip if slide replace camera flash phone change camera same soluction for 5 & 6 question clean camera glass clean camera leans replace camera change camera


7 reverse camera rotate phone cheak camera settings reset & format flash phone 8 select one option { phone memmory or mmc } reset & format flash phone same soluction for 9 question 10 first cheak camera settings keep in normal reset and format flash phone replace camera change camera 12 reset & format cheak camera strip make a jumper change strip same soluction for 13 question 14 first cheak settings reset and fomat open phone cheak flash light 2side 2side value value ok ok if flash light is black change flash light cheak flash light tips 1side value 1 side nothing ok


cheak nearest components if components damage change from another dead board heat components make a jumper same soluction for 15 question 16 open phone cheak camera loose or tight replace camera heat nearest components change camera ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _____ __ 14 memmory card not supported ? memmory card problems 1 memmory card corrupted 2 mmc mmc card card not not showin showing g 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 not showing answers 1 first cheak another mmc reset and format open phone clean mmc connector heat nearest mmc components flash phone replace ic change ic


same soluction 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 soluction for 5 question 6 format phone format mmc 7 cheak another mmc resoldering mmc connector heat nearest components follow the tracks and make a jumper change mmc connector ______ _________ ___ ____ _______ _______ _______ _______ ________ ________ _______ _______ _______ _____ __ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ ____ 15 insert sim card ? cheak battery loose or tight cheak another sim card cheak battery connector cheak 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 ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _____ _


16 key pad problem ? ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _____ _ 17 contact service ? first flash phone open phone cheak pcb condiction and clean if dust heat flash i c heat power ic nearest components after confirm custmer flash phone replace flash ic change another flash ic from dead board ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ ____ 18 blueetooth problem ? biueetooth problems 1 device not found 2 searchi searching ng failed failed 3 sending failed 4 bluetooth not on 5 bt not ready 6 bt error 7 bt on phone reastart 8 delete some device 9 bt symbol not showing 10 bt busy 11 bt not active answers 1 first cheak phone visilibity reset and format open phone heat bt with paste


flash phone same answer for 2 3 first cheak memmory memmory space flash the phone and ui settings heat bt section replace bt antina change bt antina 4 reset and format open phone clen dust heat bt section flash phone some answer for 5 6 10 11 7 reset and format flash the phone heat bt section 8 cheak device list and delete device reset and format flash phone 9 cheak data sending or not reset and format flash phone _______ ___ ________ ________ _______ _______ _______ _______ ________ ________ _______ _______ ______ __ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _____ __ 19 local mode test mode ? open phone & clean charging section and handfree section heat charging section and handfree section replace charging connector change charging connector flash phone


__________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ 20 hands handsfree free probl problem em ? first cheak profile reset phone open phone clean carbon dust heat nearest components near handfree section replace connector change connector flash phone { car mode phone } reset phone open phone clean dust heat nearest components near handfree section replace connector change connector flash phone { insert hand free phone restart } cheak another handfree reset and format heat hf section replace hf connector change connector cheak components if components damage change components { handsfree symbol not showing } Cheak another hf resoldering hf connector heat nearest components replace connector change connector some phones ic heat it replace and change it


__________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ ____ 21 phone phone hea heatt ? calling time normal time charging time while playing mp3 and vedio first cheak another battery open phone cheak charging connector replace charging connector heat pa replace pa ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ ______ ___ 22 phone phone han hanging ging ? phone phone blinki blinking ng sim insert phone restart open any folder phone restart phone phone workin working g very very slow 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 pho ne blinki blinking ng first cheak another battery loose or tight remove mmc and cheak reset and format


flash phone heat flash ic replace flash ic ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ 23 phone phone dea dead d? water damage fallen down working phone first cheak three points battery on /off switch battery connector

__________ ______ _______ _______ ________ ________ ________ ________ ________ _______ _______ _______ ___ ______ ___ _______ _______ _______ ________ ________ ________ ________ ________ _______ _______ ______ __

saleem Mobile Phone 15

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