Hello NuclearJimStMarys,
Thank you for using Apple Support Communities. Sounds like you're receiving duplicate SMS text messages from a specific Android user. If so, we'd like to help out by recommending some steps you can try. Please try the steps below:
1.) Close the Messages app: Close an app on your iPhone or iPod touch - Apple Support
2.) Restart your iPhone - Apple Support
3.) If your issue continues, try deleting the affected messaging thread with that one contact. After you've deleted it, have the send you another SMS text message to see if that helped out.
You can also try installing any pending updates that might be available for your iPhone. This can usually help with unique issues, since updates include fixes. Just in case, this link can guide you through the update process: Update your iPhone or iPad - Apple Support
1.)Back up your device using iCloud or your computer.
2.)Plug your device into power and connect to the internet with Wi-Fi.
3.)Go to Settings > General, then tap Software Update.
4.) If you see more than one software update option available, choose the one that you want to install.
5.) Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do: If you forgot your iPhone passcode - Apple Support
We hope these steps help you. Thank you for using Apple Support Communities. Take care.