Quote Originally Posted by riders4sia View Post
what do you mean by not recognize? incorrect simcard or inactive sim or just it act like without simcard? well, if your problem is the last which i've have list, i guess you are using a 128k simcard. as far as i know K790, K800, K810, K850 doesn't detect 128k simcard
On my K800 I use 3G SIM card ( 128 K ) and work fine, but I had a problem with certificates - a conflict between the phone and in the SIM certificates and cann't open https pages with phone browser, very long time open *.jad files.