Posted here are various solutions in troubleshooting Mobile phone issues among Cellphone Technicians.

I will only post solutions that is already been encountered and tested by me.

If you have applied the solution and does not work for you, the best way is to rely on the service manual (schematic diagram) of the phone itself.

Trace and study the diagram,because in troubleshooting a mobile phone,it is a trial and error that you must apply the basic step first.

This serve as references.

Note:

This is for Certified Telecommunication Technician only.

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sms lebaran:

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ravi:

i have g five d88 gets dead in engineering mode by activating sim in high speed . can anybody help me please

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Philippines Lover:

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sassi:

good phone k900+

sassi:

good phone k900+ mais on peut pas acceder au image a travers l’ordinateur,comment faire.

Quin:

Hi bought n5800 clone need code to enable com , thanks

agron:

I have E71 mobile phone with WIFI,TV,DUAL SIM CARD…Made in china.I entered a dangerous code:*#6810# that disabled the ENGINEERING menu and several other codes.Theres has to be a REVERSING code for *#6810# so I can enter again to Engineering menu…PLEAS HELP ME. WHATE I DO

nauman:

can we install apllication on nokia n97 clone from china

pacman:

nice blog site. ok na ok.
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gsmdiag:

China Phones are not updatable.Use China PC Suite in installing games.

milan:

how to update the clone N97 firmware and how to install games

milan:

How to update the clone N97 firmware and how t install games

frank:

firmware for clone nokia n83 and aplications

nurhadi:

Ok ALL,,, i am finished format my phone with my on interface. i used RX and TX from USB. Thanks gsmdiag and all,,,,

nurhadi:

Thanks, gsmdiag…

- I want to reflash without flash box
or USB Cable.
- But i have RS 232 Interface with
RX/TX 3,6 Volt Maks.
Can i use it ?
- I want to know about position
RX and TX in my n200+ board.
When i measure in that one of
my pad hole, i found one pad with
2,8 Vdc. Is this TX pin ?.
- Send me RX and TX pin in
n200+. My board same as with
TV_MOBILE_PHONE
USB Interface 1×12 Pin
GND:9
VCC:2
RXD:3
TXD:4
MTK CPU:6226

gsmdiag:

@nurhadi,reflash the phone,make sure to backup the firmware first.

nurhadi:

i have n200+ mobile phones with TV, dual gsm,,,no dead after settings High Speed SIM via Engineering Menu. Any body can help me please ? nurhadi_putra@yahoo.com

steve:

please send me diagram of rwandacell cells mapping. 635 10