I thought Smart’s MySandbox was an SMS-based twitter application. But after I registered to the twitter part of the application, I realized that it is a part of MySandbox application downloadable to your mobile application. I haven’t tested this since I do not have a smart sim. I tried posting to twitter from their website but it does not work for me. Maybe because the number I input is a Globe number (like duh).
Smart’s MySandbox is like a portal application where you can access different applications — twitter, facebook, digisoria, etc.
You can download it for free by simply texting Sandbox to 211. Sorry for a blahhh report, I have not really used it from my mobile phone.