WATER DAMAGE 911, First thing YOU MUST DO is remove the battery "if not built in" then immediately use a VACUUM and SUCK the moisture out. This is the most effective way to remover moisture. Create a seal using your fingers for more suction. Apply in 3.5mm jack and ALL PORTS. Do NOT attempt to attach the battery for 24 hours. You can plug in a charger without the battery to see if it powers up. However, I would wait 24 hours if possible. I'm guilty of plugging power into the phone to test after a few hours and it worked every time. However, I NEVER put the battery in until 24 hours later to see if any bloating of the battery wrap shows. If so, dispose of the battery properly and buy a new on. Good luck. Kevin Luxon

We drove to Chicago and our internal hard drive in the Acura kept failing. The ONLY way to reboot was to disconnect the positive battery cable for 60 seconds and let the system reboot. I hope that works. Kevin

Hello: No secret code. However, the link to the APP for a screen test is in the iTunes store. As of August 23rd, 2017 you have Version 4.0. https://itunes.apple.com/us/app/touchscr...-test/id1126113478?mt=8 You can test the pixels, touch, pinch, move, multi-touch on 6s and beyond. Remember, aftermarket replacement screens DO NOT provide the moisture seals, response, and drop performance so please use Apple Care or a Certified replacement brand such as eVero. Your iPhone is worth it. Enjoy, have fun.