Sticker not detected

I try Estimote nearabe examples (Ranging example and Monitoring example) on my iPhone 6 Plus with Estimote sticker. Theese aplication examples did not detect my Estimote sticker. To my surprise Estimote iOS application (from App Store) is able to detect this sticker. Would you help me, please?

Did you make any modifications to the examples’ code? Are you using the Swift or Obj-C version?