WaveBlock phone sticker — Product verdict
WaveBlock · tested 2026-08-25
BackfiresClaim on the box: “The only patented, scientifically backed, lab-tested 5G-shield EMF reduction sticker. USA made.”
| Measured at | 1 cm |
| Position | 1 cm |
| Meters used | TriField TF2, GQ EMF-390 |
| TriField TF2 | 16.58 → 17.25 (+4%) |
Same phone, same distance, call or hotspot on. 30s settle.
Shielding is a trade. These are the signal numbers from the same two runs, so the cost is on the page next to the benefit.
| Signal (RSSI) | -61 → -60 dBm (1 dB stronger) |
| Signal bars | 5 → 5 (unchanged) |
| Client throughput | 685 → 587 Mbps (14.3% slower) |
Measured change is the average of each meter’s own percent change — never a blend of raw readings from meters on different scales. Only a meter whose Before reading clears its resolution floor counts toward it; any that don’t are listed below but marked “not counted”. When a single meter is used, its Before → After appears above; every meter’s own pair is listed below. Thresholds and the full paired protocol are on How We Test.
Browse published product tests, or read how we run the paired test.
More Pendants & Stickers verdictsAll Test ResultsHow We TestResults are informational and specific to the documented test setup. EMF levels vary with distance, signal strength, operating mode, and environment. Educational content, not medical advice.