GoRuck Faraday Bag
A ruggedised sleeve that actually silences a phone across LTE, wifi, Bluetooth, and GPS the moment you seal it.
TL;DR verdict
Worth the money if you need a phone to be genuinely offline for a defined window, and can live with a sleeve that looks like tactical gear on a train.
What we like
- Actually blocks signal across LTE, 5G, wifi, Bluetooth, and GPS
- Roll-top seal is fast and survives real bag life
- Fits a phone plus a passport or small notebook
- Made from Cordura, not the flaky metallic mylar of cheaper bags
Where it falls short
- Ugly in daily use — looks like military surplus
- No indicator that the seal is fully closed
- You will miss calls, which is the point but also the friction
- Bulk is noticeable in a jacket pocket
TL;DR verdict
Buy it if you have a real reason to make a phone go dark on demand — border crossings, protests, sensitive meetings, a source who insists. Skip it if you just want to feel more secure. The bag works. The question is whether you have the discipline to use it.
What it's for
A Faraday bag is a portable dead zone. Slide a device inside, close the seal, and the fabric's woven conductive layer reflects and absorbs radio frequencies before they reach the antennas inside. This one is rated to block roughly 60 to 100 decibels of attenuation across the bands consumer phones use — LTE up to about 6 GHz, wifi 2.4 and 5 GHz, Bluetooth, and the L1 band GPS receivers listen on. In practical terms: the phone stops existing on any network until you open the bag.
How it holds up
The construction is the story. Most Faraday bags on Amazon are silvery mylar sleeves that tear within a month and leak through pinholes you can't see. This one is Cordura on the outside, a proper conductive fabric on the inside, and the roll-top uses a hook-and-loop closure that folds three times before it locks. I ran the usual home tests — call the phone from a landline while it's sealed, try to AirDrop from a laptop, watch a Bluetooth scanner for the MAC address to disappear. It disappears immediately.
The failure mode is human, not material. If you roll the top only twice, or if the fold isn't tight against the edges, a corner of signal slips through. I saw this once when a keyring inside the bag propped a gap open. Empty the bag before you seal it.
Setup and life with it
There is no setup. You buy the bag, you put a phone in it, you close it. What takes adjustment is the social side. If you seal your phone for a two-hour meeting, you're unreachable for two hours. Airplane mode first is worth doing — the phone stops thrashing for signal, the battery lasts, and if you open the bag briefly you're not immediately broadcasting a "I was offline for a while" spike to your carrier's records.
Who it's for
Journalists meeting sources. Travellers crossing borders where they'd rather a device not be pinged by a hostile network. Anyone who needs a phone to be provably offline for a bounded period and doesn't want to trust software. Not for people who just want to feel more secure at dinner — for that, leaving the phone at home works better and costs nothing.
Frequently asked
Does putting my phone in this drain the battery faster?
Yes, noticeably. The phone will burn power hunting for cell towers it can't find. Airplane mode first, then seal, if you want to preserve charge.
Can I use it with a laptop?
Not this size. GoRuck sells a larger 13-inch version for that. The phone-sized sleeve fits a phone, a passport, and maybe a small notebook.
Will it protect against a stingray or IMSI catcher?
Only while sealed. The moment the bag opens the phone rejoins whatever network is nearest, including a fake tower. Treat it as a switch, not a shield.