But the problem: you don't have the time to manually search through your inbox, and all you've got in mind is the word "PIN" in the SMS text message.
Free iPhone, Android App To Search SMS Text Messages By KeywordHandcent SMS is a free iPhone and Android app that can search SMS text by keyword. Handcent SMS does not only offer you an SMS search feature but it also allows you to make it your default application to handle your SMS needs. Handcent SMS also comes with a built-in anti-spam capability so you can blacklist, stop those pesky spammers from ruining your day.
Download Handcent SMS for Android [Google Play Link]
Download Handcent for iPhone [Cydia Link]