GSM Shop GSM Shop
GSM-Forum  

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Chinese Models & Cloned Phones

Chinese Models & Cloned Phones All China Phone Platforms like (MTK, Spreadtrum.. etc.) Cloned Nokia Nokla & Motorola . etc. Phones are included

Reply
 
LinkBack Thread Tools Display Modes
Old 11-08-2008, 10:28   #1 (permalink)
No Life Poster
 
bgreat's Avatar
 
Join Date: Mar 2008
Location: JALANDHAR(PUNJAB)
Posts: 845
Member: 727235
Status: Offline
Thanks Meter: 1,210
Arrow How to find rx and tx


FIND OUT RX & TX BY FOLLOWING METHODS FOR CHINA MOBILES
It is tasted and also you can test it.

1 step is, we need to find GND from phone.

2 step is, we should power on phone (operation with dead phone:
phone must be 100% dead by software)and take multimater put it to voltage.

3 multimeter (-) line put it GND and with (+) line check each connectors
, and usually Tx= 1.8v or 2.8v and Rx=1.7v or 2.7v
(it will be change by processor but strongly 1.7v or 2.8v not 3v or 4v)
This way is too easy and you will save a more time.

For example!
You have got new brand China miracle phone with USB cable. It has got
12 pin. You must find (Infinity team give good Idea 1.2.3 punkts):
1) GND usually it has got 2 GND. (now we have got 10 pins)
2) We will uncheck USB + and USB- (VSS) just with checking by USB cable (now we have 8 pins)
3) By USB cable we also uncheck V bat+, ac adaptor + polarization (now we have 7 pins)
4) Now from this 7 pins you will find 1 or 3 not used pins (last operation we have 3 or 6 pins to find Rx Tx signals)
5) Now at last operation you should use good multimeter just to find Rx Tx with 1.7v-2.7v or 1.8v-2.8v
6) WHEN PHONE IS POWERD OFF TX AND GND WITH MULTIMETER MAKING BEEEEEP
(DIOD TEST OPERATION), WHEN PHONE POWERED ON IT WILL SHOW LIKE DIOD
RESISTANS 600-700 OHM BETWIN TX AND GND.

I think I have give for every body more informationís. Just try to
find. If you find 2-3 phone signals and you will be profi mobile Tx and
Rx signals finder.
Some times you will not find with this method some phones, but why we have forum?


This instruction will helpful for people who works in GSM repairing industry minimum 3-5 years.


How to find pinout for unknown model:

In most cases you need to know Gnd, Rx, Tx pins for flash/unlock
operations. What do do if you don't have cable or you have new phone
model:

1. find Gnd pin (it's required step, you can't continue until
you will know Gnd pin location)

2. find Charge pins (it's optional step, just to save your
time during future research)

3. find +Battery pins (it's optional step, just to save your time
during future research)

4. connect cable Gnd to phone Gnd
5. try to connect cable Rx/Tx wires to all phone contacts one by
one (except Gnd, Charge, +Battery pins) and try to read flash from phone
6. if flash read procedure can start this means that pinout found Ok
and you can make other operations

Note about "Chinese models": a lot of different phones with the same
name exist on market (as well as many different name phones with the
same pinouts), so, if you see in our "cable selector" wrong pinout for
"Chinese models"it's good idea to find correct pinout acording to above
instruction and send found pinout information with full text from phone
back label to
  Reply With Quote
The Following 22 Users Say Thank You to bgreat For This Useful Post:
Show/Hide list of the thanked
Old 12-07-2008, 06:11   #2 (permalink)
Junior Member
 
Join Date: Jan 2008
Posts: 18
Member: 669717
Status: Offline
Thanks Meter: 1
help cpf box I rx tx
  Reply With Quote
Old 02-25-2010, 15:14   #3 (permalink)
Major Poster
 
Join Date: Sep 2009
Posts: 43
Member: 1123097
Status: Offline
Thanks Meter: 5
Please help!! I'm desperate!!

Quote:
Originally Posted by bgreat View Post
FIND OUT RX & TX BY FOLLOWING METHODS FOR CHINA MOBILES
It is tasted and also you can test it.

1 step is, we need to find GND from phone.

2 step is, we should power on phone (operation with dead phone:
phone must be 100% dead by software)and take multimater put it to voltage.

3 multimeter (-) line put it GND and with (+) line check each connectors
, and usually Tx= 1.8v or 2.8v and Rx=1.7v or 2.7v
(it will be change by processor but strongly 1.7v or 2.8v not 3v or 4v)
This way is too easy and you will save a more time.

For example!
You have got new brand China miracle phone with USB cable. It has got
12 pin. You must find (Infinity team give good Idea 1.2.3 punkts):
1) GND usually it has got 2 GND. (now we have got 10 pins)
2) We will uncheck USB + and USB- (VSS) just with checking by USB cable (now we have 8 pins)
3) By USB cable we also uncheck V bat+, ac adaptor + polarization (now we have 7 pins)
4) Now from this 7 pins you will find 1 or 3 not used pins (last operation we have 3 or 6 pins to find Rx Tx signals)
5) Now at last operation you should use good multimeter just to find Rx Tx with 1.7v-2.7v or 1.8v-2.8v
6) WHEN PHONE IS POWERD OFF TX AND GND WITH MULTIMETER MAKING BEEEEEP
(DIOD TEST OPERATION), WHEN PHONE POWERED ON IT WILL SHOW LIKE DIOD
RESISTANS 600-700 OHM BETWIN TX AND GND.

I think I have give for every body more informationís. Just try to
find. If you find 2-3 phone signals and you will be profi mobile Tx and
Rx signals finder.
Some times you will not find with this method some phones, but why we have forum?


This instruction will helpful for people who works in GSM repairing industry minimum 3-5 years.


How to find pinout for unknown model:

In most cases you need to know Gnd, Rx, Tx pins for flash/unlock
operations. What do do if you don't have cable or you have new phone
model:

1. find Gnd pin (it's required step, you can't continue until
you will know Gnd pin location)

2. find Charge pins (it's optional step, just to save your
time during future research)

3. find +Battery pins (it's optional step, just to save your time
during future research)

4. connect cable Gnd to phone Gnd
5. try to connect cable Rx/Tx wires to all phone contacts one by
one (except Gnd, Charge, +Battery pins) and try to read flash from phone
6. if flash read procedure can start this means that pinout found Ok
and you can make other operations

Note about "Chinese models": a lot of different phones with the same
name exist on market (as well as many different name phones with the
same pinouts), so, if you see in our "cable selector" wrong pinout for
"Chinese models"it's good idea to find correct pinout acording to above
instruction and send found pinout information with full text from phone
back label to
Hi!I bought a flash cable and now i want to make it so it connects with my phone (i bought a connector for my phone and a regular chinese flash cable). I'm having trouble connecting the wires as i don't know what pins they should be connected to. Please read below for the details and voltages.
Please help

I used a multimeter and read the voltages on my pins. I now have:
1- 0V
2- 2.63v (maybe tx/rx)
3- 2.69v (maybe tx/rx)
4- 2.78v (maybe tx/rx)
5-3.67v (battery pin)
6- 0v (it beeps when I check resistance, so this is GND)
7- 0v
8- 0v
9- 0.4v
10- 0.5v

Can you please help me decide how to connect my wires to these? I have red, black and green wires. I don't know which should attach to what pin. Is there a way to know wire should connect to which pin by checking the wires voltage???
When I checked the voltages on the wires, I got:
Black- 2.65v (maybe tx/rx)
Green- 0v (i think this is GND)
Red- 3.99v (maybe battery voltage)

Should I put the RED wire to pin 5 and try to read??
  Reply With Quote
The Following 2 Users Say Thank You to Casanova2k8 For This Useful Post:
Old 10-17-2015, 04:59   #4 (permalink)
Junior Member
 
Join Date: Apr 2011
Age: 34
Posts: 8
Member: 1550104
Status: Offline
Thanks Meter: 1
try this h
  Reply With Quote
Old 10-17-2015, 06:58   #5 (permalink)
Junior Member
 
Join Date: Apr 2011
Age: 34
Posts: 8
Member: 1550104
Status: Offline
Thanks Meter: 1
for tx rx china nokia 105 scarch 4sheared or contac me 09732007401
  Reply With Quote
Old 01-02-2016, 14:50   #6 (permalink)
No Life Poster
 
MIRPUR AJK's Avatar
 
Join Date: Mar 2008
Posts: 1,301
Member: 725834
Status: Offline
Thanks Meter: 920
plz find this problem my g,five president g6 usb pinout damage how to find rx tx this model plz send this solution thnx advance,,,,,
  Reply With Quote
Old 03-14-2017, 13:48   #7 (permalink)
Junior Member
 
Join Date: Sep 2015
Posts: 1
Member: 2454652
Status: Offline
Sonork: ejizeea
Thanks Meter: 0
Nokia pinout

Pls I have Nokia 101 and 105 ,,,,,,pls help me with the pinout solution with normal usb cable that have GND,RED,GREEN,WIHTE .....GND=BLACK, GREEN=?, RED=?, WIHTE=?....... looking forward for your help.
  Reply With Quote
Old 03-15-2017, 06:10   #8 (permalink)
Junior Member
 
Join Date: Jan 2017
Posts: 8
Member: 2672786
Status: Offline
Thanks Meter: 0
Sir g my qmobile x11 usb pin damage and my mobile is dead reason sofware corrupt how to flash qmobile x11 and plz give me usb pinout ways plz
  Reply With Quote
Old 11-19-2017, 09:11   #9 (permalink)
Junior Member
 
Join Date: Jan 2017
Posts: 9
Member: 2676600
Status: Offline
Thanks Meter: 1
Quote:
Originally Posted by ejizeea View Post
Pls I have Nokia 101 and 105 ,,,,,,pls help me with the pinout solution with normal usb cable that have GND,RED,GREEN,WIHTE .....GND=BLACK, GREEN=?, RED=?, WIHTE=?....... looking forward for your help.
Red postive white d- and green dpostive


Sent from my Redmi 4 using Tapatalk
  Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
thread Thread Starter Forum Replies Last Post
How To Find Rx .tx Signles . gopalhot Chinese Models & Cloned Phones 6 03-10-2011 08:35
@@..how we can find RX and TX by [email protected]@ mobi_soft Chinese Models & Cloned Phones 2 12-08-2009 08:13
HOW TO FIND [RX and TX] _ So Easy_in Your Phone New ! The_Dj Infinity-Box 5 11-28-2008 15:42
unable to find rx and tx ameho0102 MC-Tool 0 07-23-2008 12:00
HOW TO FIND RX/TX WITH ipHONE ON PAD?? frooze_angel PadFinder box 11 07-21-2008 11:46

 



All times are GMT +1. The time now is 06:33.



Powered by Searchlight © 2020 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2017 -
Page generated in 0.39239 seconds with 8 queries

SEO by vBSEO