One phone when i press the last pound key it doesnt go through and nothing happens

Another one the Code did not work on my mobile phone, nothing happened after i entered the code below into phone without the SIM card. Also when i used my other sim card, which the phone is locked to, it requests the unlock code and then says "code error".
Any ideas.

And this phone well when i took my sim card.it's saying insert a sim card " till now
it's correct " but when i try 2 inter the code i cant type ... it block on
insert a sim card// nothing shows up...
what does that mean??

thanks,
Drew