Start with the app and your actual phone.
Flex connects to iPhone over Bluetooth. Android also has a documented USB path, provided the phone and data cable support it. Its NFC features have separate purposes: the presence of NFC is not evidence of a Tangem-style transaction workflow.
Ledger’s product specification lists iOS 14+ and Android 10+, while its current recovery instructions require iOS 15+ for the phone path. Treat that discrepancy as a reason to check the current app-store listing on your phone before ordering. A published hardware minimum is not a promise that every later app release installs on that OS.
Buy the display for the decisions you make.
The E Ink touchscreen gives transaction review more room than the Nano X display. That can matter for addresses and permission details, but a larger screen is not a security rating. You still need to understand and check the action presented on the signer.
Make a list of your required assets and networks before comparing prices. A token being supported through a desktop wallet does not establish the same workflow in Ledger Wallet mobile. Use the linked asset directory to identify the application, then check that application’s exact Flex mobile integration.
Mobile maintenance, with a fallback to plan.
The model-specific OS guide documents Bluetooth updates in Ledger Wallet mobile. Remain in the app and follow the prompts through the device restarts. Releases may arrive progressively rather than appearing for everyone at the same moment.
The same guide recommends trying Ledger Wallet on desktop when a device is stuck in Update Mode. For a person with no computer access, that is a purchase condition worth resolving in advance. Routine mobile support and the ability to repair every fault from a phone are different claims.
Keep the backup distinct from the app.
Ledger documents restoring a phrase on the hardware touchscreen, then installing the relevant device apps and adding accounts in Ledger Wallet. The phone can help manage the process, but it is not where you type the hardware wallet’s recovery words.
Optional Recovery Key and Ledger Recover arrangements have separate setup, compatibility and service conditions. Decide which backup you will actually maintain before relying on it. We have not tested a Flex recovery or evaluated those optional services; their existence does not remove the need for a usable backup plan.
