At this time most of the classic phone ( Sfr and Vodafone ) uses Infineon as Cpu . ( perhaps low cost )
generaly in popular phone wich are sold averytime Locked .
often most of them have different pinouts , or sometime cable ( commonly RJ45 ) not exist or resseller no near to you . in this case you have only a last chance which will allow you to work on your phone . I found this way so easy to find Infineon CPU pinout without dificulty . you just need to follow these few steps .
Steps :
you Need an ampermeter digital more easy but no problem with Analogic too .
1 : disassembly ( reaquired experience )
2 : Phone should be on , you may use your battery or a external power source ( 5 volts ) extenal power's better than battery you will able to move your phone wihout get it off .
3 : set your ampermeter on Voltage at 20V precisely
4 : with ampermeter hold the negative on phone GND and put the positive to the different points on your Phone board . ( Gold Points , Charge connector pins etc.. ) to get these voltages below ..
for RX you could get these voltages = 0.15V or 0.20V ( not forget your ampermeter precision +1 or -1 )
For TX you should get 2.80V ( +1 or - 1 ampermeter precision )
have a fun ... this one has been tested it work 100% .
generaly in popular phone wich are sold averytime Locked .
often most of them have different pinouts , or sometime cable ( commonly RJ45 ) not exist or resseller no near to you . in this case you have only a last chance which will allow you to work on your phone . I found this way so easy to find Infineon CPU pinout without dificulty . you just need to follow these few steps .
Steps :
you Need an ampermeter digital more easy but no problem with Analogic too .
1 : disassembly ( reaquired experience )
2 : Phone should be on , you may use your battery or a external power source ( 5 volts ) extenal power's better than battery you will able to move your phone wihout get it off .
3 : set your ampermeter on Voltage at 20V precisely
4 : with ampermeter hold the negative on phone GND and put the positive to the different points on your Phone board . ( Gold Points , Charge connector pins etc.. ) to get these voltages below ..
for RX you could get these voltages = 0.15V or 0.20V ( not forget your ampermeter precision +1 or -1 )
For TX you should get 2.80V ( +1 or - 1 ampermeter precision )
have a fun ... this one has been tested it work 100% .
