I am a newbie android user and have a question about text messages I am receiving on my S4. For the 2nd time in 2 weeks I have received a text message from a local cell phone #, that comes through as a download. I didn't open the first one, and just deleted it thinking it was spam, however I got another one today and it made me wonder. I am a party plan salesperson, so it isn't uncommon for me to get calls/texts from non-contacts. My question is, am I safe to hit the download button and not have anything bad happen to my phone? I'm afraid that I may be missing out on a customer sale by not downloading the text.