I have a dual sim phone, but use only one sim. Since I am now on vacation in another country I decided to buy an extra sim card, but they had only full-size SIMs and I needed a micro-SIM version. I then decided to cut one myself (with a scissor). It looks quite alright, if I might say so.
My phone asks for the pincode for that SIM (and only accepts the right one), but I don't get any receipt.
Now my question is: when your phone asks for pincode, doesn't that automatically mean the SIM chip is read?
Thus removing the possibility of a faulty cut, instead pointing towards bad reception and/or bad phone support for that carrier.
Sincerely David van der Laan