Metamask on Android synchronization with PC. Support for hardware wallets

What is Metamask? How to use?

If you are interested in Ethereum ecosystem. You need an application like Metamask. This extension is much larger than just a wallet, Metamask allows us to interact with sites that support integration with Ethereum.

Metamask will allow you to connect to decentralized applications (Dapps) directly from the browser (or through the mobile application). You can make transactions without intermediaries and play various games with a completely transparent source code (so you will be sure that you have not been deceived).

The creation of Ethereum was marked by the promise of the appearance of a distributed Internet. the long.awaited Web 3.0. This is a space characterized by the absence of unified points of refusal, the true possession of data and the presence of decentralized applications (Dapps).

The infrastructure under construction is steadily united with an emphasis on decentralized finances (Defi) and interaction protocols that are aimed at connecting various blockchains. Now you can exchange tokens and cryptocurrencies, take cryptocurrency loans and even use Bitcoin on Ethereum.

For many Ethereum Metamask enthusiasts, is an perfect wallet. Unlike software for smartphones or desktop computers, the wallet is available in the form of an extension for a browser in which users directly interact with supported web pages. In this article we will tell you how Metamask works, and how to start work with it.

Metamask. decentralized wallet for Ethereum and ERC20 tokens. presented in the form of an extension for the browser (the application on the mobile phone has recently appeared, now it is in early access and can work unstable). Allows the user to send, receive and exchange cryptocurrency, completely controlling his keys. Metamask generates passwords and keys directly on the device, so only the owner has access to his funds and confidential information. In addition, the wallet allows you to interact with other blockchain applications such as the COMPOUND credit pool or the Uniswap crypto-rope.

A distinctive feature of Metamask is that expansion can interact with other websites. When using other wallets, you need to copy and insert the address for payment or scan the QR code on a separate device. With the expansion of Metamask, the site will simply send a request to the wallet, and you will be invited to accept or reject the transaction.

Metamask can serve as an ordinary cryptocurrency wallet, but its main advantage lies in impeccable interaction with Smart contracts and decentralized applications. Let’s find out how to create a wallet.

Installation Metamask

Metamask wallet can be installed in the browsers Google Chrome, Firefox and Brave. It is also available for iOS and Android, but now we will not stop there. In this leadership, we will use Firefox, but regardless of which browser you are using, steps will be approximately the same.

Go to the official Metamask download page.Io. Select your browser, then you will be redirected to the Chrome online store or to the Firefox additions website. Press the expansion installation button. Perhaps before starting you will need to provide him with some permits. Make sure you are satisfied with the requirements for access to the browser. if so, then forward.

On the expansion page, click the Add to Chrome and confirm your action.

Now metamask will always be available on the browser additions panel. Click “Start”. Start using Metamask wallet

• If you have previously used another wallet for Ethereum and you have a Seeed Fraz of twelve words, with which you can restore access to the balance.
• If you want to create a wallet from scratch, getting a new Seed-Fraz.

After clicking on the “Create wallet” button, Metamask will ask him to allocate data on your actions. This does not apply to confidential data or keys. This refers to clicks and transitions in pages, on the basis of which a public monitoring panel is then formed. You have the right to refuse to collect data now, or do it later at any time in the settings. It is recommended to agree, since this will not affect your safety, but it will help developers improve their wallet.Metamask data collection agreement.

Come up with a password in at least eight characters long. Agree with the conditions for using the service.

Next, the SeeD-Fraza is generated. Take this stage carefully, write down the phrase and save in a safe place. It may be required in the future to restore access to the wallet.Reserve copy of SEED phrases in the Metamask wallet.

On the next screen, you must confirm that you have saved the SEED-Fraz. Place the words in the correct order.

If you want to use Metamask both from the phone and from the computer at the same time, that is, the synchronization function:

• Install a mobile application.
• Select the Sync or Import option.
• Click Scan QR Code.
• Open the extension of Metamask on a computer.
• Go to the settings, to the Advanced section.
• Click synchronization with a mobile device. A QR code will appear.
• Scan away this code using a mobile application.

basic information

To install Metamask, go to the official website https: // Metamask.IO/ and press the Download right corner button.

You can go the other way and immediately find a metamask in the extensions catalog for Google Chrome or in the application store of your phone (Android and iOS are supported). Applications designed for Google Chrome can be installed on any browsers using the same engine, including Brave, Yandex.Browser, etc.D.

On the expansion page, click the Add to Chrome and confirm your action.

When the extension is successfully installed, the wallet page will open. Now metamask will always be available on the browser additions panel. Click “Start”.

Select one of the options:

• 1-if you previously used another wallet for Ethereum and you have a Seeed Fraz of twelve words, with which you can restore access to the balance.
• 2-if you want to create a wallet from scratch, getting a new Seed-Fraz.

After clicking on the “Create wallet” button, Metamask will ask him to allocate data on your actions. This does not apply to confidential data or keys. This refers to clicks and transitions in pages, on the basis of which a public monitoring panel is then formed. You have the right to refuse to collect data now, or do it later at any time in the settings. It is recommended to agree, since this will not affect your safety, but it will help developers improve their wallet.

Come up with a password in at least eight characters long. Agree with the conditions for using the service.

Next, the SeeD-Fraza is generated. Take this stage carefully, write down the phrase and save in a safe place. It may be required in the future to restore access to the wallet.

On the next screen, you must confirm that you have saved the SEED-Fraz. Place the words in the correct order.

If you want to use Metamask both from the phone and from the computer at the same time, that is, the synchronization function:

• Install a mobile application.
• Select the Sync or Import option.
• Click Scan QR Code.
• Open the extension of Metamask on a computer.
• Go to the settings, to the Advanced section.
• Click synchronization with a mobile device. A QR code will appear.
• Scan away this code using a mobile application.

Refill

Metamask wallet can be used without cryptocurrency, just as a manager of entering various sites. But replenishment of an account in ETH or tokens allows you to use a wide variety of decentralized services. invest, trade, play games, collect virtual collection objects, etc.D.

Two main ways to replenish the score in metamask:

If you just click by the name of your account, then the address is automatically copied, after which you can transfer funds from a wallet or crypto.tank to it. You can also see the address by clicking on three points in the upper right corner, and then on the “account details”. There will also be a QR code for quick translating cryptocurrency from mobile wallets.

Metamask supports a direct buy from a card. If you press the Buy button, you can choose the payment option via Wyre or Coinswitch. The first option supports only dollars, the second. many world currencies, including

Coinswitch charges the commission from 0% to 0.49% network fees. Wyre 3.2% network fees. Translation from another wallet, as a rule, includes only network fees.

Installation Metamask

One of the key factors why people choose a metamask wallet is a quick and understandable installation. Below we describe the installation algorithm on different browsers:

After the extension is installed, it is necessary to add or create a new wallet. To do this, click on the “Create wallet” button and click on a checkmark about data processing. If you do not allow the application processing application, you can also use it. After that, you need to come up with a password and click on the “Create” key.

Then a new page will open, where a secret phrase consisting of 12 words will be entered (this is the key to your wallet). Be sure to write down this phrase with the password so that access to the wallet can be restored if you forget the data for the entrance. A similar security system persists when creating any crypto wallet. Often this phrase. A set of words that are not interconnected.

If you already have a wallet, it is not necessary to create a new one, enter your account, introducing a phrase from 12 words.

Replenishment of the wallet

You can replenish your wallet quickly and just. To do this, click on the “replenish” button and select a convenient option to replenish money:

• Transfer coins to your new address from another wallet.
• Take advantage to replenish services, such as exchanges or exchangers.
• Buy ETH through the internal functionality of the wallet.

By default, at the first entrance, an ETH wallet has already been created, you can copy its address to transfer coins to balance.

Exchangers

Internet exchanges (for example, Bestchange.Net). This is one of the popular methods to replenish the wallet. The user can choose the type of currency for the purchase, specify the address of the wallet and complete the transaction.

From your other account or from the exchange

To replenish the wallet from your account, it is enough to insert the address of the wallet and confirm the transaction.

According to users, the most profitable option is the purchase of cryptocurrencies on the exchange. It is the most safe to do this using binance. The service attracts buyers with the optimal cost of tokens and the ability to use any cards.

Metamask: review and reviews about cryptocurrency wallet

Metamask (official website Metamask.IO). cryptocurrency client, allowing reliably and comfortably operate with a large list of cryptocurrencies and tokens. What features does this wallet have and what about metamask reviews on the network. you will learn about everything from this article in detail.

Metamask is a convenient and multifunctional wallet that opens access to users to various blockchains. This Russified application does not directly store the coins of its customers, like any other wallet, but provides the opportunity to operate with tokens and coins through a comfortable and understandable integration. At the same time, you can install the program both on a PC and on a smartphone, and access to the wallet can always be restored through the SEEDFREA.

The significant advantage of the wallet is that you can not only work with your coins, but also directly connect to decentralized applications through its browser. This function to a greater extent has ensured the success of the metamask wallet, which very quickly gained popularity among various developers. This is confirmed by both a large number of application installations and positive reviews.

Pros and cons of Metamask wallet

As noted above, Metamask is an application, and for its use it is necessary to install this program on your device. Currently, the client is provided in the form of an extension for a browser on PC, as well as a program for a mobile device.

First you need to go to the official website of the wallet, where right on the main one we will be offered to download the necessary application through the “Download” button, which can be found in the center of the page and in the upper menu.

How to tie cold wallets to Metamask

In addition to Ledger and Trezor, other hardware storages can be tied to metamask. But the sequence of actions is generally similar.

First you need to have a created account in Metamask. so that there is something to tie a cold wallet.

After binding, Metamask will perform the “shell” function to work with a hardware wallet. For this reason, after the completion of the procedure, it is necessary to reliably store only a secret phrase that opens access to the cold Ledger wallet. Without this set of words, even gaining Seed-Framask, attackers will not be able to use a hardware wallet.

To start the attachment process, you need to click on the color mug in the upper right corner of the metamask working window. In the menu that opens, you will need to select “Settings”.

Next, you will need to click on the line “Additionally”.

At the bottom of the page that opened will be the point “Preferred type of connection to Ledger”. Under it is a form that allows you to choose the right option. You need to click on the first line “Ledger Live”.

After performing these actions, you will need to press the color circle of the menu again and click on the line “Connect a hardware wallet”.

As a result, a page will be loaded on which several connection options will be offered.

You need to select Ledger. If there is no cold wallet, the system will offer to download and configure the software for working with it.

If the wallet is already there, then you need to click on the “Continue” button. As a result, a page will open, on which you will need to enter the Ledger wallet password.

Further in the window that appears, you will need to click on “Open the application”

After performing the described actions, the purse control page will load.

The window with the phrase “Expose Your Device Accounts Through WebSocket” is stolen here. The Open button is located just below, on which you need to click.

Next, a window with the image of a device that serves as a hardware wallet will appear.

Now you need to enter the Ethereum application using a cold wallet.

take a device that performs the function of the hardware wallet and connect it to the PC via USB cable;

Open the Ethereum application. ETH CRYPTO.

To enter the pin and launch of the application, the menu is used, which is displayed on the screen of the device itself.

With a successful launch of the application, a window will appear on the screen with confirmation of this action.

The next thing you need to do is to return to the Metamask wallet menu and update its page. As a result, all the user’s available accounts will appear from which you can choose one or more. To confirm the action, press the blue button “Unlock”.

After unlocking on the Metamask page, the data of the cold wallet Ledger will be displayed.

Before starting work, you need to perform a few more actions on a cold storage device:

Find in the settings the item “Contract Data”;

press 2 buttons at the same time. left and right.

As a result, in the “Contract Data” section, the status “Not Allowed” (no interaction permission) will change to “Allowed” (there is a resolution).

After that, you need to get out of the settings of the device.

Binding Trezor wallet

The basic actions here are the same as in the case of Ledger:

select “Connect a hardware wallet”;

In the window that opens, click on the square with Trezor inside.

By choosing Trezor, you need to press the blue button “Continue”.

After that, the user will get to the wallet page, where there will be a proposal to connect a device for cold storage of cryptocurrency to a PC.

To connect, you need to click on “Pair Devices”. On the page that opened, the system will ask the user with a permit for reading addresses from the Trezor wallet. The resolution must be provided by clicking on the green button.

After clicking, the application will find a compatible device and connect to it. Before reading public keys, a window will appear to re.confirm access to the wallet data.

To continue the process, press the green Export button. After that, a page will appear on which you will need to enter a PIN code from the cold trezor wallet.

By entering the code and clicking on Confirm, the user will get to the page with the Pass Phrases input form. This is a password consisting of a special set of words. If the pass-fraz is not introduced, access to some wallets will remain closed.

The phrase is introduced in 2 fields. The second field is necessary to confirm the fidelity of the entered password. After filling the form, click the green button Enter. If there is no need to use hidden wallets, then the fields can not be filled. Just press Enter.

After performing the described actions, the metamascus wallet page will open, on which accounts available for use will be displayed.

You can choose one or more wallets by putting ticks in a square. When the necessary wallets are selected, you will need to press the blue unlock button. As a result, a page will be loaded on which the balance of the hardware wallet Trezor will be visible.

If several accounts have been selected, then to switch between them, you must use the standard metamaic menu. It displays the previously selected Trezor wallets.

After performing the described actions, you can choose which wallet to connect to a separate service. browser or hardware.

The selection menu has the following view:

Metamask itself and wallets tied to it are displayed in the form of a list. The user notes a convenient option for him.

After binding the Ledger or Trezor hardware wallet to Metamask, you can freely use them to work with any sites where there are functions of connecting cryptocurrency wallets.

What to do if an unexpected NFT appeared in your wallet?

Sometimes in your wallet there may be NFT that you did not buy, did not exchange and did not receive from someone consciously. They just appear from the air. Some of them can be legal because Airdrop has long existed in the blockchain. The distribution of tokens at Ethereum wallet addresses is often used to attract interest in the project.

But this practice is also associated with phishing in the community. So, if you ever get a random NFT in your wallet, you need to be careful. Explore a token or project to make sure they are legal. Do not try to sell or transfer it only because you got it for free.

This is the most common scheme of fraud with distribution. you are trying to exchange the token that you received in your wallet for free. But when you are trying to change it, instead he redirects you to some kind of website. The site is trying to get personal information from you. In some cases, he even requests your secret recovery phrase. Some people ultimately share their secret phrase of recovery and lose access to tokens in their wallets.

You should never share your secret phrase of recovery with someone. Even Metamask will never ask for your secret recovery phrase. As soon as someone recognizes your secret phrase of recovery, he does not need anything else to access your wallet. And as soon as someone gets access to your wallet, he will be able to cash out or translate all your tokens even before you understand what happened.

If your wallet has fraudulent tokens, it is better to just leave them there. Often, when you are trying to take any actions that end in the fact that they hurt you.

In addition to the phishing.scam, you should usually know about nft hijacks. They are also used to arouse interest in an undeserved project. This practice is also known in the community as Rugpull, which is often considered as the equivalent of the traditional Ponzi scheme.

A wallet allows you to easily manage your NFT. But if you cannot find your NFT in your wallet, there can be no talk of token management. Fortunately, Metamask allows you to easily add tokens that you do not see in the wallet. This does not mean that the wallet has yet to go a long way. The wallet should add many functions when it comes to NFT support. But working with him is still easier than with most other wallets, so it is so popular in the community.

Access to a decentralized network

Since we are in the test network, we do not have such a large selection of applications with which we can interact. The full list of decentralized applications of the main network can be found on the state of the Dapps or Dappradar. You can play games, buy unique assets or bet on prediction markets.

We will use DAPP, which has been demonstrated earlier. Uniswap is a decentralized exchange (DEX), on which you can place transactions without relying on intermediaries. The mechanisms underlying it are quite elegant. you can read about them in the article what is uniswap and how it works.

You can get access to Uniswap here. In the upper right corner, you should see the request “Connect to the wallet”. Such a request will appear on all sites compatible with Metamask, since the extension is not connected automatically for security reasons. Click on it and you will be invited to choose a wallet. If you were not redirected to another page, then Metamask will be such a wallet.

When the site tries to connect for the first time, Metamask dialog box will appear with a request to confirm the action. Here you can choose an account (so far we have only one, so leave everything as it is), and then view what permits you are going to provide the site. In this case, as in many others, the site requests information about the address of the wallet of your account.

Metamask and confidentiality

It is important to remember what information you provide sites. If the site knows your address, it can track all incoming and outgoing transactions with ether and tokens. over, the address on the Ethereum network can be compared with your IP address.

Some prefer to share their addresses to prevent any coincidence, while these risks do not excite (in the end, the blockchain is public). The level of confidentiality that you want to achieve ultimately depends only on you. General rule: do not give access to your these sites that you do not trust.

ETH exchange for DAI

It’s time to make our first exchange. We will exchange with the DAI stablecoin, the ERC-20 token. However, like our ether, this DAI has no real value. Click “Select token”, add the Uniswap list by default, and then click “DAI”. As an option, you can choose a Weth (Wrapped Ether).

Now it remains only to enter the amount of ETH, which we want to exchange. After the input, you will see the amount of DAI that should get. Ready! Click “Exchange”.

Then the request for confirmation of action with Metamask will be displayed again. In this case, you need to confirm the transaction before its creation. When you do this on the main network, make sure that the commission is acceptable for you, since its amount may be great. The commission depends on the current state of the network.

After that, we need to wait for the transaction confirmation.

Where my tokens are stored?

So, your broadcast is gone, but new tokens are not displayed in the account. Without panic. you need to add them manually.

If these are popular tokens, select “Add token” and search by name or ticer. If you exchanged less popular (or those in the test network), then you need to manually add the address of the contract. the identifier that Metamask reports, where to look for our balance.

• Open your wallet by clicking on expansion.
• Click on three points in the top panel.
• Select “Look at Etherscan”.
• In the “OverView” section, click on the Token falling list and select DAI.
• In the “Profile Summary” section, you should see the address of the contract. Copy the address by pointing it.
• Return to Metamask and click “Add token”.
• Click on the User Token tab.
• Insert the copied address into the form “Token Contract”.
• The remaining fields must be filled automatically. Press “Next”, then “add tokens”.
• Return to the main screen to view the full balance.

Congratulations! You just took advantage of your first Dapp, reliably exchanging the air for DAI. Everything you have learned can now be done in a real network. When you are ready to use the main network applications, do not forget to switch with Ropsten to the main network.

What else you need to know about Metamask?

Metamask has other useful functions that we have not talked about here. You can connect a hardware wallet (supported by both Trezor and Ledger), create a list of contacts and, of course, receive and send funds, as on a regular wallet. You can configure the expansion for your needs.

In addition, ordinary security principles are applied: Metamask is a hot wallet, which means it works on a device connected to the Internet. This exposes you at greater risk than the use of a cold wallet, which is offline in order to minimize the surface of attack vectors.

Finally, when using Metamask, you must understand which sites you are accessing.

Synchronization of the expansion of Metamask and smartphone

If there is such a need, then you must first download the application from the store on your phone. Next, choose from it from:

In the first case, everything is clear, it is enough to introduce 12 words recorded earlier. In the second, you must first create this QR code in the extension:

Now we go to the application for a smartphone and perform there:

In the application for the phone, you can also create a wallet for cryptocurrency from scratch, and this is done similarly to the expansion. There should not be difficulties here.

Replenishment of the account in the personal account of metamask and sending crypto

To send, click “Send” and there we prescribe several parameters.

• Wallet address for sending. You can then bring the frequently used address in the book in your personal account, which will facilitate its search.
• Assets. Only Ethereum is originally used, subsequently the number of tokens can be increased. It is convenient that the amount is automatically shown how much it will be in dollars at the current rate.
• Commission. The speed with which sending will be directly dependent on its size. the larger, the faster.

Metamask/Metamask-Mobile

This comit sores not belong to ainch on this repository, and May Belong to a fork outside of the repository.

A TAG ALREADY Exists with The ProvideDed Branch Name. Many Git Commands Accept Both Tag Tag and Branch Names, So Creating this Branch May Cause UNEXPECETED BEHAVIR. Are you Sure You Want to Create This Branch?

Use Git or Checkout with Svn Using the Web Url.

Launching Visual Studio Code

There was a Problem Preparing Your Codespace, Please Try Again.

Latest Commit

Failed to Load Latest Commit Information.

Metamask is a mobile Wallet that Provides Easy Access to Websites that Use the Ethereum Blockchain.

For up to the minute News, Follow OUR or Medium Pages.

To Learn How to Develop Metamask-Compatible Applications, Visit Our Developer Docs.

The Code Is Built Using React-Native and Running Code Locillas A Mac Or Linux OS.

Install Sentry-Cli Tools: Brew Install GetSentry/Tools/Sentry-Cli

Install node.JS Version 14 (Latest Stable) and Yarn@1 (Latest)

Install The Shared React Native Dependencies (React Native Cli. Not Expo Cli)

• Install The Android SDK, Via Android Studio.

• Metamask Only: to Create Production Builds, You Need to Install Google Play Library Via The SDK Manager in Android Studio.

• In the SDK Manager, Select the SDK Tools Tab and Install NDK Version 21.four.7075529. You’ll Need to Click “Show Package Details” In Order to Select the Appropriate Version.

• Ensure that You have the Secret-Tool Binary on Your Machine.

• Part of the Libsecret-Tools Package on Debian/Ubuntu Based Distributations.

• Follow the Instructions at:

(React Native Cli Quickstart. [Your OS]. Android)
• Details Can Be Found on the Android Developer Site

• Android OS Version: Latest, Unless Told Otherwise
• Device: Google Pixel 3
• Install The ios Dependencies

(React Native Cli Quickstart. [Your OS]. iOS)

• You do not neeed cocoapods

• iOS OS Version: Latest, Unless Told Otherwise
• Device: iPhone 11 Pro
• Metamask Only: Rename Theenv.Example Files (Remove the.Example) In the Root of the Project and Fill in the Appropriate Values ​​for Each Key. Get the Values ​​from Another Metamask Mobile Developer.
• Non-metamask only: in the Project Root Folder Run

Non-metamask only: Create an Account and Generate Your Own Api Key at Infura in Order to Connect to Main and Test Nets. Fill mm_infura_project_id in.JS.ENV. (App Will Run with it It, BUT Will Not Be Able To Connect To Actual Network.)

UNFORTUNATELY, The BUILD SYSTEM MAY To Pick Up Local Changes, Such AS Installing New Npm Packages Or Link Ing A Dependenscy. If the App IS Behaving Strangly or Not Picking Up YoR Local Changes, It May Due to Build Isesues. To ensure that you’re Starting with a clean Slate, Close All Emulators/Simulators, Stop The Yarn Watch Process, and Run:

IF Yarn Link Fails After Going Through These Steps, Try Directly Yarn Add in the Local Files Inst.

FIRST, MAKE Sure You have The Following Running:

Next, Install The Flipper Desktop App (Verified Working with V0.127.0)

• Once Flipper is Installed, Configure Your System as Follows:

• Install React-Devtools: NPM I.G React-Devtools@4.22.one
• Update Android SDK Location Settings by Accessing Flipper’s Settings Via The Gear icon. Settings

• Example SDK Path:/Users // Library/Android/SDK

Finally, Check That The Debugger Is Working:

• Open Your Emulator Or Simulator Alongside the Flipper Apper
• Flipper Shoup Auto-Detect the Device and the Application to Debug
• You Shoup Now Be Able to Access Features Such as Logs
• Debuging Physical iOS Devices Requires IDB to Be Installed, Which Consists of 2 Parts
• Install The Two IDB Parts:
• Brew Tap /FB Brew Install IDB-Companion
• Pip3.9 Install fb.idb (This STEP MAY REQUIRE THAT YOUTALL PYTHON3 VIA Python.M pip3 Install.-Upgrade Pip)

Debug a WebSite Inside The WebView (In-App Browser)

• Run The App in Debug Mode (For Example, In a Simulator)
• Open Chrome on Your Desktop
• Go to Chrome: // Inspect/#Devices
• Look for the Device and Click Inspect

You Shoup See the Console for the Website that is Running Inside the WebView