SINCE UPDATING SOFTWARE TO iOS 9.02 iPhone performance is pathetic.

Hi,

I need assistance with the following. Since Updating to the latest software my iPhone 5 has 'downgraded' thus:

• Battery life is insanely short, power falls to 50% in about 45 minutes and in a little over an hour after full charge it simply dies out (Low Power Mode or Not). This is frustrating.
• Camera doesn't work at all.
• Flashlight doesn't work at all.
• Phone keeps heating up when listening to music or during normal in-phone activities, though I noticed it does not heat up when in the charger.

Please assist/advice.

Thank you and Kind Regards,

Mohau