I use my iPhone that is fully charged and with in 10 mins it goes dead.

Oh, sorry to hear that, try to check if you have run multiple app in the background at the same time. In normal cases, the battery of iphone should last about half a hour. Also, the cold weather can also affect the performance of the phone battery, sudden battery drop or power off is possible.

Have you tried to put the iphone in to the power saving mode and close all background apps?