TON Connect and how to connect apps

What is TON Connect

TON Connect is a service that allows you to connect TON blockchain wallets to third-party bots, apps or websites. This way, you’ll be able to perform transactions quickly, as well as participate in promotions and receive rewards straight to the specified non-custodial DeFi Account.

Is it safe to connect my TON address via TON Connect

It is your responsibility to do your own due diligence review of any third-party app to which you are trying to connect. 

The process of connecting an app does not give access to your wallet assets - it only gives you the means to confirm transactions.

Below you can see an example of connecting Yescoin app to DeFi Account. Please note that this example is provided for illustrative purpose only, and is neither intended as, nor shall be considered or construed as a recommendation or advice.


After connecting, an app may ask for your confirmation to complete a transaction. All transactions sent via apps require your personal confirmation to proceed. This provides additional security — allowing you to check the validity of data prior to completing a transaction. 

Remember that DeFi Account does not verify, curate or control other app’s content and utilities. You access, rely upon and use any app at your own risk. 

Below you can see an example of confirming a transaction in the Catizen app.


Important: always check transactions prior to confirming them. Check the transaction amount and make sure that you know and trust the recipient or service where you are sending your cryptocurrency.

What are the benefits of TON Connect authorization

By connecting your DeFi Account to other apps via TON Connect, you can:

  • Securely and conveniently connect your wallet address on the TON blockchain
  • Swiftly create and confirm transactions — no need to input an address, sum, and other transfer details
  • Participate in promotions within the TON ecosystem and receive rewards straight to your DeFi Account

How to connect DeFi Account to an app

Remember to do your own prior due diligence review of any app to which you are trying to connect your DeFi Account.

The app will prompt you to connect a TON-based wallet to their service. In the next window, confirm the connection by tapping on ‘Open Wallet in Telegram’.

If you did not already create a DeFi Account, you will be able to do that in the process of connection. Make sure to save your 24-word secret phrase securely. Without it, you may lose access to the wallet you just created.

We also recommend that you turn on email recovery to log in to DeFi Account more quickly. See how to do it here.

How to disconnect DeFi Account from an app / from several apps

To disconnect from an app:

  • Open your DeFi Account, tap the 3 dots in the upper right corner, and choose ‘Settings’.
  • After that, enter the ‘Connected Apps’ section.
  • Tap on the disconnect icon.

You can also tap ‘Disconnect All Apps’ to close all connections to your DeFi Account account. If you need to reconnect to an app later, you can always go to the app and connect your DeFi Account again.

I am not able to connect my DeFi Account to an app. I receive an App Manifest Error

It is likely that the error is on the side of the app you tried to connect to your DeFi Account. Firstly, we recommend that you try fixing the error with the following technical advice:

  1. Try connecting the app using a different Internet connection. For example, if you used Wi-Fi, switch to mobile data instead or vice versa.
  2. Restart your device and try again.
  3. Enable the ‘Set time automatically’ feature on your device. It can be done in the ‘Date and Time’ section of your device settings.

If these steps didn’t help, try to log out of DeFi Account, clear your Telegram app cache, log in to DeFi Account again and repeat the transaction.

How to clear the app cache?

- For iOS: Go to Telegram Settings > Data and Storage > Storage Usage > Clear cache.

- For Android: Go to Settings > Apps > Telegram > Clear cache, and then Settings > Apps > Android System WebView > Clear cache.

Important: Before clearing cache, be sure to save your DeFi Account Secret Recovery Phrase or enable the email recovery function. You can find the Secret Recovery Phrase or enable email recovery in DeFi Account settings, by tapping on the 3 dots in the app’s upper right corner.


I followed the instructions but still get the error

If you have followed the instructions above but the error persists, you need to contact the support of the app you failed to connect to, and discuss possible solutions with them.

You can also copy the error details by tapping the button on the error page. This information will help the app support to get a better understanding of the failure reason and advise you further.


I disconnected DeFi Account from an app, but I still see my wallet address when I open the app

First, check if the app is listed in the ‘Connected Apps’ section of your DeFi Account settings.

If it is listed there, try to disconnect it from DeFi Account. Tap on the app name in ‘Connected Apps’, and then tap on ‘Disconnect’ to confirm the action.

If you do not see the app in your 'Connected Apps' section, but you still see your wallet address in the app interface, you will need to contact support of the app directly. Even though you disconnected the app from your DeFi Account, it’s possible that a bug or interface error in the specific app is causing your wallet address to still appear there.

I connected an app to DeFi Account, but now I can’t confirm a transaction in the app. I see a blank screen or an error 'No request received' after being redirected to DeFi Account

In this situation, the transaction cannot be created due to one of the following reasons:

  • TON Connect error
  • Your current non-custodial DeFi Account address differs from the address linked earlier

Follow these instructions to find the cause of the problem.


1) Check your current DeFi Account address matches the one you linked.

It is possible that the linked address is different from your main DeFi Account address. This can happen in the following cases:

  1. You logged in to DeFi Account from another device and created a new address in the app. Read how to change a wallet address here.
  2. You use different Telegram accounts, with different DeFi Account addresses.
  3. You are seeing your blockchain address for your Crypto Wallet account, not your DeFi Account. The address that gets bound to apps is visible in the DeFi Account tab on Crypto Wallet's main page. Read about the differences between Crypto Wallet and DeFi Account here.

2) If your current and linked DeFi Account addresses match, but the transaction still cannot be created, try to reconnect DeFi Account. To do this, you need to enter the app where you are trying to perform the transaction, unbind your DeFi Account address via a special button and then to rebind it once again. If you have trouble doing so, contact the app support for further assistance.

I connected an app to my DeFi Account, but now I don’t see it among the connected apps in DeFi Account

Check the device from which you connected the app to your DeFi Account.

Connected apps are only visible on the device that made the connection.

For example, if you connect the app on your smartphone, it will be visible exclusively on your smartphone, and not on your PC or in a browser.

If you are using the same device, but still do not see the connection in ‘Connected Apps’, then you need to reconnect your DeFi Account to the corresponding app.

I’ve connected my DeFi Account to an app, but there’s no wallet address in the app

Check if you see the app listed in the ‘Connected Apps’ section in DeFi Account settings.

If you see the app name, try to unbind it from DeFi Account and reconnect again. Tap on the corresponding name in ‘Connected Apps’, and then tap on ‘Disconnect’ to confirm the action. After that, return to the app and reconnect your DeFi Account to it.

If you do not see the app listed at all, return to the app and reconnect your DeFi Account to it again.

Is it possible for anyone to access my non-custodial DeFi Account using TON Connect

It is the responsibility of a non-custodial wallet’s owner to keep it secure. The owner has the only means to access the wallet because they are the only party that has access to its Secret Recovery Phrase. This gives you full ownership of your assets, but also requires you to be careful while using your DeFi Account.

You should always check carefully any transaction requests sent to you in DeFi Account.

The app connection itself doesn’t give the app permission to move funds inside the non-custodial wallet. With TON Connect, you give an app the permission to send transaction confirmation requests to your DeFi Account. Only you can confirm the transaction, so it’s important to do your own prior due diligence review of the app and verify all the transfer information before confirming the transaction, to avoid potential mistakes or losses.

Below you can see an example of confirming a transaction in GetGems.

Also, it’s important to keep in mind that a Secret Recovery Phrase grants access to DeFi Account. Therefore, keep your Recovery Phrase in a safe place, accessible only to you and never share it with anyone.

I accidentally shared my Recovery Phrase with a third-party app

In this situation, you should replace your DeFi Account as quickly as possible by creating a new TON-blockchain wallet address.

Once you create the new wallet, write down its Recovery Phrase (don’t share it with anyone!) and immediately transfer all the funds from your previous DeFi Account to the new wallet address. After doing so, you should remove the compromised DeFi Account. You can do so via these instructions.

After removing the compromised DeFi Account, you can create a new DeFi Account and transfer the funds back to it. Your new DeFi Account will have a new Recovery Phrase and be completely separate and safe from the one you removed.

Under no circumstances should you ever share your Recovery Phrase with anyone. There is never a technical reason to share it — if someone tries to persuade you to do so, ignore them and block their account on whichever platform they’re using to contact you.

I connected my DeFi Account to an unknown app. I tapped on the ‘Confirm’ button and lost my funds. Can I get them back

Once the transfer is successfully initiated, it is impossible to return any funds — as blockchain transactions are irreversible.

By tapping the ‘Confirm’ button, you confirm the transfer of funds, so please always check who you’re sending funds to, and the details of the transaction, as the amount might be different than expected. Similarly, you should never send cryptocurrency or collectibles to unknown people or services.

To keep your DeFi Account secure, do not connect to unverified apps and never share your Recovery Phrase or account details with anyone.

Read more about fake bots on Telegram here.

Can I delete a DeFi Account if I created it to connect to an app and don't need it anymore

When you activated your DeFi Account you created a non-custodial wallet address in the TON blockchain. This address can not be deleted because any blockchain address exists as part of the blockchain ledger. 

Though, if you do not need it, you can remove your non-custodial TON address from your account by tapping the 3 dots in the upper right corner of your DeFi Account and going to Settings > Remove DeFi Account.

After removal, your DeFi Account will still be available if you have your Secret Recovery Phrase saved, or if you have account recovery via email enabled.

We recommend you save your Secret Recovery Phrase, so that you can access your DeFi Account again in the future if needed. You can also turn on email recovery, which makes it possible to log in to DeFi Account from a linked Telegram account without needing to input your 24-word Recovery Phrase every time. Read more on how email recovery works here.

You can see instructions on how to use DeFi Account here.

Which services can I connect to via TON Connect

There is a broad range of apps that you can connect to from within Telegram or from your browser.

However, please remember that you must do your own prior due diligence review of every app before connecting it through TON Connect to your DeFi Account, and you need to understand and evaluate the risks of using such apps.

Disclaimer: this article is created for informational purposes only.

No communication or information provided to you by DeFi Account is intended as, or shall be considered or construed as, investment advice, financial advice, trading advice, or any other sort of advice.

You are solely responsible for determining whether any protocol, cryptocurrency, investment strategy or related transaction is appropriate for you according to your personal investment objectives, financial circumstances and risk tolerance. 

DeFi Account does not endorse or guarantee the accuracy, reliability, or security of any external content or services that may be accessible through or interact with DeFi Account.

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