.ipa file does not install in some iphone

Question

I have created an app for iphone and ipad. App install perfectly in iphone but does not install in some iphone. I have use xcode for this app and already add UDID in apple's site for developing. I am using iphone-4 for testing and works fine in developing mode. I am new in ios. So I think, I forget any step for installing. Please write in step wise if possible.

Thanks in advance.

Answer 1

You may need to check your Project Info in your Xcode. see here

Make sure the iOS Version of your iPhone is equal or bigger than the target value in your project