All China Mobiles RDA 6231 Pa Jumper
All China Mobiles RDA 6231 Pa Jumper Rda 6231 pa signal ic use in many Chaina mobile phones and its use direct batry volts so this part falted many times in mobile phones. if problem in this pa signal ic set go on litle shorted only one point at external digital power supply or searching mode and again searching.set cannot register on cell phone opreator services. some chaina mobile cell phone in setting use gsm switching mode setting like as nokia x2-02 in network option setting option for exemple gsm900/1800 if your phones setting not set at auto network seraching mobile phone network problem created. first set auto slect these setting and try to power of an power on cell phone. at last problem not solved then check antena connected with pcb antena point perfectly . full and final if problem same and your phone can not searching mobile phone opreator network try to remove pa and make these jumper cearfull as picture shown below. RDA 623...
