nokia 300 shutdown when insert sim
 

hi friends ..

i have asha 300 which comes with critical issue.... when i insert sim card to phone it got suddenly shutoff if we start without simcard it running well .. but when we make imergency call without sim it shutoff ..
now i already flash with latest version and remove speaker and test it also... other function are totaly work fine ...pcb is so clean no little water damaged too... i think it is PFO(RF) folt ??

if anybody face and solved this type of issue please guide me..

thanks

dial 112 without sim inserted & check mobile gets off or not . if mobile off during this emergency number dial then it's should be for hardware problem .
PA should faulty , connect mobile with external psu & measure current consumption in tx mode.

@sarac bro what is psu??????

PSU = Power Supply Unit

i think problem in PA,
try rehot or replace PA...