📱 Signal Booster Sticker – Quick Overview
A slim, metal-based sticker designed to be placed inside your phone’s battery compartment (or battery case). It's marketed as improving signal reception, reducing static, and enhancing performance in weak-signal zones like tunnels, buildings, cars, mountainous areas, or elevators.

✅ Claimed Benefits:

• Boosts cellular signal strength

• Reduces background static

• Lightweight, easy to install (peel-and-stick design)