Step 1: At first, you’ll need to use the items in normal ways. Simply use the Lucky Egg to gain double XP for the next 30 minutes, or use the Incense to attract Pokemon towards your location. You can either use both these items together or use one at a time.
Step 2: After the Step 1 is completed, exit the Pokemon Go app and move over to the ‘Settings’ option of your Android or iOS device. Go to the ‘date and time’ setting in the ‘Settings’ option.
Step 3: Toggle off the option which allows to set the date and time of the device automatically.
Step 4: Once the automatic setting is turned off, roll back the time in the device by around 25 minutes. Make sure you don’t set back the time by more than 30 minutes. Doing this will increase the amount of time your Lucky Egg or Incense has before running out.
Step 5: After completing Step 4, head back to the Pokemon Go app and you’ll find that the time left on Lucky Egg or Incense has been increased by the number of minutes you rolled back in the ‘date and time’ settings.
This trick is very effective and will help you in getting unlimited access to both Lucky Eggs and Incense. Players that have difficulty collecting gym defender bonuses and that don’t want to spend real money on the game will definitely find this trick useful.