Maybe you should stop deleting your fingerprints from the iPhone and give it time to learn your fingerprint???
http://www.pocket-lint.com/news/123...sensor-explained-here-s-what-you-need-to-know
Once finished setting up, Touch ID will continue to learn your fingerprint every time you touch the Home Button. It even gets better at reading fingerprints and can recognise them in any orientation.
http://www.pocket-lint.com/news/123...sensor-explained-here-s-what-you-need-to-know
Once finished setting up, Touch ID will continue to learn your fingerprint every time you touch the Home Button. It even gets better at reading fingerprints and can recognise them in any orientation.