All you need to do is go to your App Store on your phone and search for tapatalk:
https://play.google.com/store/apps/details?id=com.quoord.tapatalkpro.activity&hl=enOnce you open it up it will want you to follow groups, but if you scroll to the bottom and type in Imperial Shipyards it will come up. I am not sure it gives you all the stuff you can do on the computer, but I know for sure it does let you type and upload pictures.
There is a free version and a paid pro version, but the free version has a small ad at the bottom you have to see, but it didn't seem too bad imo. I am also guessing the pro version would give you more posting options, but I am hoping this will give the phone users an easier time.
Everyone has JDeck to thank for me looking into this. I won't claim to be en expert using tapatalk yet, but let me know if you have any questions. It seems pretty self explanatory.