results may vary,Everyone uses their phone differently.If your protective of your phone it should last for awhile.Taking them in and out of cases usually dulls the adhesive longevity for the antenna band protecters
I take mine off after they start to look worn. I don't use the more expensive ones rather a cheap pack from EBay. They are hit and miss but I managed to find some really good ones and bought 20 to last me
mine seem to last only about a year tops. Its seems no matter how good of a job i do applying the skin, dust seems to find its way into a corner and eventually it will get worse and eventually the whole corner will come off.