This application is meant to notify you with sound and vibration when the phone asks for a PIN or PUK code to enable the SIM card. This usually happens only when you power on your phone, so what is the reason to develop this tool?
Get the latest .apk file of SIM Locked Notifier 1.6.2 free of charge and have a look at users' reviews on Droid Informer. You will need 78 KB of free disk space to set up the app that is created for Android 2.2 and above. The antivirus report shows that this application is totally safe. Gianni Costanzi is the developer of SIM Locked Notifier that belongs to the Tools category.
The most recent update of the app was launched on Nov 17, 2012 and this application was downloaded by over 100K users. SIM Locked Notifier has been rated 4.2 on Google Play. The statistics reveal that the app is popular mostly among Samsung and Sony users.