Ok...I am asking for someone with knowledge to give me a pointer or two. Yesterday I cleaned the touch screen and replaced the protective cover. About an hour later the touch screen no longer worked with the stylus. I have attempted to restart, reconfigure (from backup), and even threaten my phone. I think inside it is laughing at me. No warranty on this and the only thing that was odd prior was that I would get the yellow triangle with the exclaimation point which forced me to restart. This happened every few days. Anyway, I would like suggestions on the least expensive replacement touch screen delivered to the USA or for that matter my touch screen is ok and perhaps it is software related? Anyway...any suggestions would be greatly appreciated.

Thanks in advance.