Why will my iphone touchscreen work only sometimes?

I've tried resetting it that didn't help.shut it off and turned it back on that didn't help either. I can slide it to unlock it but then i can't select any icons or do anything.sometimes it will work fine for a few minutes then it won't do anything. Is there anything else i can do without taking it to a repair shop or getting a new phone?

It's broken

It's probably defective. But, if you have not been treating it well (spilling liquids on it or dropping it constantly,) that might be the case. If you have a screen protecter, sometimes you need to press harder. You can take it to the shop where you got it and for a fee they would be happy to help.

It might be defective… Go to n apple store and get a replacement if you have insurance on it.

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