Signal Booster Sticker for Mobile Phones

Claimed Purpose: These stickers are marketed as devices that enhance your phone’s signal strength, often by reducing signal interference or boosting antenna performance.

How They Work (Supposedly): They typically contain a thin metallic or conductive layer that is said to interact with your phone's antenna to improve reception—though this mechanism is not scientifically verified.

Placement: The sticker is usually placed near or inside the phone’s battery compartment, or on the back of the phone near the antenna.

Effectiveness: Numerous independent tests and expert reviews have shown that signal booster stickers generally do not work and have no measurable impact on signal strength.

Marketing Gimmick: Many of these products are considered pseudoscientific or scams, using technical jargon to mislead consumers.

Better Alternatives: For real signal improvement, users should consider signal booster devices (amplifiers), Wi-Fi calling, or switching to a better carrier in low-signal areas.