Review on Blocking Shielding Protection Anti Tracking Anti Spying by Travis Petty

It's a solid build and it worked from the start. I say first because when tested on my phone it worked perfectly, blocking all transfers and calls in and out. However, recently (about 3-4 months after purchase) I praised how well it works and recommended it to my relatives, but when I went to test it my phone was unlocked. It would block my relatives phone if inside but not mine. I'm not sure if our devices somehow detect and bypass this technology, but for only 3-4 months of use (maybe even less if I realize it's gone), it's not worth buying.