Tip #1: Don't lose your keys because of viruses and hackers! (don't like to admit it, but it's from personal experience). Using a phone to trade is convenient but if you're not careful you can get your phone compromised. I guess I forgot the basics of internet behavior when surfing the web on my phone... Yeah, don't do stupid mistakes like this.
Hope you didn't lose that much. I came across an interesting thread yesterday, it's about a crypto phone, you should check it out if you are still eager to trade on ur phone
https://bitcointalk.org/index.php?topic=5110359