Trezor Suite Mobile Buy Crash on Account Switch

To resolve Trezor Suite Mobile Buy Crash on Account Switch, trezor Suite Mobile crashes when switching accounts during Buy? Learn what caused the background asset-info failure, payment status safety, and fixes. Ensure all derivation paths, environment parameters, and cryptographic signatures are verified client-side using deterministic tools before broadcasting live transactions.

If Trezor Suite Mobile suddenly crashes to your phone’s home screen while setting up a crypto purchase in the Buy tab—specifically when attempting to switch the destination receiving account—you have encountered an unhandled state exception. This bug occurs when an underlying background refresh of fiat exchange rates or provider metadata fails right before account selection.

This crash was resolved in Trezor Suite Mobile version 26.9.1. If your app crashed during an active purchase attempt, it is essential to distinguish between a local interface crash and an external payment gateway execution before taking further action.

[!NOTE] Reviewed & Verified: October 4, 2026 | Verified against Trezor Suite Mobile v26.9.1@mobile release notes and integrated on-ramp gateway workflows. No credentials required.

Applies to

• Software: Trezor Suite Mobile (Android and iOS).
• Hardware Devices: Trezor Safe 3, Trezor Safe 5, Trezor Model T, Trezor Model One (view-only mobile pairing).
• Confirmed Fixed Version: Trezor Suite Mobile v26.9.1.
• Affected Versions: Trezor Suite Mobile versions v26.8.1 and earlier.
• Flow: Integrated Buy / Fiat-to-Crypto on-ramp routing.

Confirm This Is Your Issue

Verify whether your mobile crash matches this specific error profile:

1. Active Buy Flow: You entered the Trade $\to$ Buy section, entered an intended fiat spending amount (e.g., $200 USD), and viewed initial provider quotes.
2. Account Switching: Before finalizing the order, you tapped the destination account selector to route the purchased crypto to a different account.
3. Instant App Termination: The moment you selected the other account or tapped the dropdown, Trezor Suite Mobile terminated instantly without displaying an in-app error prompt.
4. Transient Network or Rate Limit: The crash occurred while your mobile device had an unstable connection, or immediately following an “Asset info unavailable” or “Rate refresh failed” toast notification.

If your issue involves stale DEX swap calculations instead of fiat purchases, refer to Trezor Suite Swap Slippage Offer Not Updating.

Technical Root Cause: The Null State During Account Switching

Trezor Suite relies on background API workers to continuously fetch live exchange rates, country availability filters, and provider fee schedules from integrated fiat on-ramp aggregators.

In Trezor Suite Mobile versions prior to 26.9.1:

1. When a background asset-info refresh encountered a network interruption, timeout, or API rate limit, the local state store set the asset metadata object to null or undefined.
2. When the user switched destination accounts, the UI component attempted to re-evaluate provider eligibility and calculate estimated receive amounts for the newly selected account.
3. Because the component dereferenced properties on the unpopulated asset metadata object without a fallback check, the JavaScript runtime threw an unhandled TypeError, terminating the mobile process.

In version 26.9.1, Trezor developers wrapped the account switching handler in defensive null-guards, retaining previously cached asset info and gracefully handling refresh failures without crashing the application.

Payment Safety: What Happened to Your Money?

A major source of user distress during a Buy crash is the fear that funds were debited while the crypto purchase vanished into limbo.

[!WARNING] An interface crash alone cannot confirm whether your payment succeeded or failed. The status of your funds depends entirely on which stage of the checkout process was active when the crash occurred:

• If the crash occurred before entering payment details: Your bank card or account has not been charged. Trezor Suite does not store payment credentials; payment execution occurs exclusively on the third-party provider’s hosted checkout page.
• If the crash occurred after entering payment details or confirming 3D-Secure: The transaction may have processed on the provider’s server (e.g., MoonPay, Banxa, Mercuryo). Never re-attempt the purchase immediately without verifying your bank and email status first.

Safe Step-by-Step Resolution

Step 1: Verify External Payment Status (Do Not Double-Charge)

If you entered card or banking details before the application crashed:

1. Check Your Email: Look for an order confirmation or receipt from the payment provider (e.g., MoonPay, Banxa, Ramp Network).
2. Check Your Banking App: Look for a pending authorization or settled charge.
3. If a charge exists: Copy the Order ID from your provider confirmation email and use the provider’s official tracking link to check whether crypto delivery is pending on-chain.
4. If no charge exists after 15 minutes: The order was never committed by the gateway.

Step 2: Update Trezor Suite Mobile to v26.9.1

Eliminate the unhandled exception by updating your app:

• Open Google Play or your platform’s app store.
• Search for Trezor Suite and install update 26.9.1 or newer.
• Alternatively, download the verified APK directly from the official repository at https://data.trezor.io/suite/releases/mobile/v26.9.1.

Step 3: Clear Transient Cache and Retry

If you cannot immediately update the application:

1. Ensure your internet connection (Wi-Fi or cellular) is stable.
2. Force-close Trezor Suite Mobile from your phone’s app switcher.
3. Re-launch the app and navigate to Settings $\to$ select your preferred fiat currency.
4. Select your desired destination receiving account first, before tapping into the Buy flow.
5. Enter the purchase amount and proceed directly to payment provider selection without switching accounts mid-flow.

[!CAUTION] Never share screenshots containing your full billing details, credit card numbers, or transaction verification codes in public forums or support chats. Only communicate with verified provider support using the links in your official receipt.

How to Verify the Result Safely

Confirm that the Buy flow handles account switches smoothly without executing an actual purchase:

1. Launch Trezor Suite Mobile v26.9.1.
2. Navigate to Trade $\to$ Buy.
3. Select an arbitrary currency and enter an amount (e.g., $50).
4. Tap the destination account selector and switch between multiple enabled accounts (e.g., Account #1 to Account #2).
5. The application should dynamically update the receiving address and quote details without lagging, throwing errors, or crashing.
6. Exit the flow without entering payment details.

When This Guide Does Not Apply

• Card Declined by Issuing Bank: If your purchase fails during card verification with errors such as Declined by issuer or Fraud alert triggered, this is an enforcement of banking policy regarding cryptocurrency purchases, not an app software bug. Contact your bank’s fraud department.
• Country or State Geo-Restrictions: If certain fiat payment providers are greyed out or missing from the list, the asset or provider is not licensed in your jurisdiction.
• Hardware Signing for Clear-Sign Swaps: The Buy flow routes fiat through custodial partners; it does not require hardware signing until the assets are transferred to your cold storage address.

Verified Sources & Release References

• Trezor Suite GitHub Release v26.9.1@mobile (Buy account switch fix)
• Trezor Knowledge Base: Buying Crypto in Trezor Suite
• Trezor Security Protocols: Official APK Distribution

[!TIP] Diagnostic Verification & Air-Gapped Testing: Before executing state changes or broad recovery steps, cross-reference failure parameters with our companion guide on Trezor Suite Solana Excessive Requests & Lag Fix and verify transaction calldata or cryptographic envelopes using the Master Web3 & Hardware Error Code Directory.