My BlackBerry Curve 9320 is messed up???

So, I installed a new app called "mtag" on my Curve. The app started to run but then it showed the loading sign, and i can't do anything on it. I can turn it on and all, but i can't use the trackpad, or do anything except use the convenience keys and the end buttons. I've tried rebooting the phone a couple of times, but every time the phone boots up, it shows the loading sign, and i can't do anything after that. Can anyone help me please? I would prefer if there is a solution to fix it without needing it to be repaired at a store or return it to the retailer, or anything.

Thanks

KB17877-How to start a BlackBerry smartphone in Safe Mode

Hi, have a read at this on how to start your BB in safe mode. You can then remove the offending app and reboot normally.

Thanks a lot! That really helped. At least now i know how to remove apps that make my phone freeze. Thanks again