Trezor Safe 3 review

The Trezor Safe 3 is the entry-level hardware wallet from Trezor, the Prague-based brand of SatoshiLabs that pioneered consumer hardware wallets. It combines fully open-source firmware with a certified secure element, a pairing that rivals rarely offer at this price. This Trezor Safe 3 review reflects October 2026: the device costs $59 on Trezor’s store and remains in the range below the Safe 5 and the Bluetooth Safe 7. We cover security, daily use, supported coins, price, incidents and alternatives.

Coindaro uses no affiliate links; facts were checked on Trezor’s official site and security portal and in press reports.

Trezor Safe 3 at a glance

Feature	Trezor Safe 3
Price on Trezor’s store (October 2026)	$59 (59 € in Europe)
Secure element	OPTIGA Trust M (V3), Common Criteria EAL6+
Connectivity	USB-C; Android over USB, view-only on iOS
Screen	0.96-inch monochrome OLED, 128 x 64 pixels, two buttons
Firmware	Open source
Backup	Single-share or multi-share wallet backup, passphrase
Editions	Universal and Bitcoin-only

What the Trezor Safe 3 is

A hardware wallet, or cold wallet, keeps the keys that control your coins away from your computer. Trezor Suite prepares the transaction, the Safe 3 shows it, and you approve it with the two buttons. Malware can suggest a payment, but cannot sign it without you.

The Safe 3 replaced the Model One as Trezor’s entry device and was the brand’s first model with a secure element. It has no battery and no wireless connection: you plug it in with a USB-C cable.

Security model: open source plus secure element

Trezor’s approach is transparency. The firmware code and the Trezor Suite app are public, so independent researchers can check what the device does. Ledger, its main rival, keeps the operating system of its secure element closed.

Since the Safe 3, Trezor also uses a secure element, the OPTIGA Trust M (V3), certified Common Criteria EAL6+ and usable without non-disclosure agreements. According to Trezor, the chip holds a secret that it releases only when the right PIN is entered; your keys are encrypted with that secret and the PIN. After 16 wrong PIN attempts, the secret is erased and the device resets.

Your backup is a list of words (20 by default in the box, with 12- or 24-word options) or a multi-share backup split into several lists, based on Shamir’s Secret Sharing. A passphrase can be added to open hidden wallets. Read our guide to seed phrase security before choosing a scheme.

Setup and daily use

Setup runs in Trezor Suite on Windows, macOS, Linux or the web. You check the device’s authenticity, install firmware, create the wallet backup, then set a PIN. Our guide on how to set up a hardware wallet walks through each step and the checks to make on delivery.

Day to day, the Safe 3 is a desktop and Android device. On iPhone, Trezor Suite is limited to viewing balances: no sending, swapping or setup. The small screen and two buttons make long addresses slower to verify than on the Safe 5’s touchscreen. Trezor Suite offers coin control and Tor routing for privacy-minded Bitcoin users.

Supported coins and apps

Trezor says the universal Safe 3 supports thousands of coins and tokens through Trezor Suite and third-party wallets. Suite covers Bitcoin, Ethereum, Solana, Cardano, XRP, Litecoin, Dogecoin, Zcash, Stellar and others, with buying, selling and swapping through partners. Other assets work through compatible wallets such as MetaMask.

The Bitcoin-only edition runs a lighter firmware limited to Bitcoin, which reduces the attack surface for users who hold nothing else. The Safe 3 can also act as a FIDO2 security key for website logins.

Price and what is in the box

As of October 2026, the Safe 3 costs $59 on Trezor’s store, the same figure in euros, one of the lowest prices for a secure element wallet from a major brand. The box contains the device, a USB-C to USB-C cable, two 20-word backup cards, a start-up guide and stickers. Buy only from Trezor or an official reseller.

Incidents and controversies

• Ledger Donjon research (2024–2025). Ledger’s security team reported to Trezor on 12 November 2024 that a known voltage-glitching attack on the Safe 3’s microcontroller could bypass some supply-chain countermeasures. The attack requires physical access, lab equipment and expertise; Trezor says the Safe 5 is not affected.
• Support portal breach (January 2024). An attacker accessed a third-party ticketing system, exposing names and email addresses of up to 66,000 people who had contacted support. No funds were affected.
• Shipping and email providers (2026). BleepingComputer reported that a breach at logistics provider ShipMonk exposed order data of about 81,000 Trezor customers, and that in September 2026 attackers abused Trezor’s email provider Brevo to send phishing to some 347,000 newsletter addresses.

None of these incidents extracted keys from a device, but they show why you should ignore any message asking for your wallet backup.

Who the Trezor Safe 3 suits

• Beginners on a budget who want a secure element and open-source firmware.
• Bitcoin holders, thanks to the Bitcoin-only edition, coin control and Tor.
• Desktop and Android users who rarely move their funds.

It suits less well iPhone users and anyone who wants a large screen.

Alternatives to the Trezor Safe 3

The Trezor Safe 5 adds a colour touchscreen and haptic feedback for $129. The Ledger Nano S Plus costs $69 with broader asset support but closed firmware. Trezor’s Safe 7, at $249, brings Bluetooth and full iPhone support.