TruthCase philosophy · A QuantaCase buying guide
Five red flags.
Better questions before you buy.
A shielding case should earn your confidence through its design, its evidence and its instructions. Look closely at what is built in—and what has been left out.
Apply RF Safe’s checklist to any case, including ours.
Red flag 01
Metal near antenna areas
Look at the small details.
Metal loops and strap hardware can interact with a phone’s antennas. The effect depends on the phone, frequency and placement; appearance alone cannot establish the exposure change.
Ask where conductive hardware sits relative to your phone’s antennas.
Red flag 02
An unshielded earpiece opening
Inspect the shield—not just the cover.
An opening deserves the same scrutiny as the surrounding shielding material. Ask how the earpiece area is constructed and whether it was included in finished-case testing.
The comparison artwork illustrates RF Safe’s design checklist. Other brands and models can change; inspect the actual case you are buying.
Red flag 03
Magnet-and-plate stacks
Look behind the phone.
Detachable designs can introduce a mounting plate and magnets behind the handset. RF Safe flags this added conductive hardware as a reason to ask for phone-specific performance evidence.
This illustration expresses RF Safe’s design concern; it is not a measured safety rating for every detachable case.
Red flag 04
A bulky wallet flap
A useful design has to be easy to use.
A cover packed with cards and cash can become cumbersome. If the shielding flap is difficult to position, the design can work against the habits it is supposed to support.
During a handheld call, close the flap between your head and the screen. Prefer speakerphone at a distance when practical.
Red flag 05
Blanket “99% protection” claims
Ask what was actually tested.
A shielding-material percentage does not establish the reduction in a person’s exposure when using a phone inside a finished case. Phone model, bands, orientation and network conditions matter.
Ask for the test method, phone model, frequencies, positions and complete results—not just a headline number.
Evidence before reassurance
The questions worth asking.
Was the material tested, or the finished phone-and-case combination?
These answer different questions. A material test characterizes a sample under specified conditions. Assessing a finished case requires the actual handset, defined positions and relevant operating conditions. Ask for the complete report and its limitations.
Does avoiding these red flags make a phone safe?
No. This is RF Safe’s design checklist, not an independent safety certification or a guarantee against health effects. It does not establish a percentage reduction for every phone or situation.
How should I use the shielding flap?
Keep the shielded flap between you and the phone. For a handheld call, close it over the screen toward your head. For carrying, orient the closed shielded side toward your body. Create distance whenever practical. See the illustrated usage guide.
Policy before products
A case is one practical step.
TruthCase is the philosophy behind QuantaCase: explain the design, show the limits, and teach better habits. Accessories cannot replace independent research, protective public standards or lower-exposure infrastructure.
RF Safe’s broader red-flags guide also presents its policy advocacy and light-first communications vision.
Find your phoneLearn correct useAdapted from RF Safe’s Red Flags guide. Images are RF Safe educational illustrations; case details vary by model.
