When minting Gems you may get failed transactions that would look similar to the following.
This is a common error in Polygon. The answer is to simply increase your gas. The following instructions describes how to do this.
Click on your account icon, then find "Advanced gas controls" under "Advanced" in the settings menu:
Once you've flicked this switch, the option to 'Edit' gas will appear when sending a transaction:
Clicking on 'edit' should allow you to modify the three applicable fields as follows:
MetaMask Mobile already has the ability to precisely configure gas built-in; you do not need to enable it in settings.
When you get to the final screen before sending your transaction, you will see an "Estimated gas fee". To the right, the fee will appear underlined in blue:
Click on the fee, and a menu will appear with a slider, and another option to click on "Advanced Options". When you do, this menu will open and you will have the opportunity to customize your gas fully:
The easiest way to buy Polygon USDC is with Ramp.
1. Go to ramp.network
2. Select USDC Polygon and enter your email address. They will email you a code. Enter that code and continue.
3. Enter your Polygon Wallet address. You can copy this from MetaMask.
4. Next, click card and begin entering your card information on the next screen.
There are many crypto wallets to choose from, but MetaMask is the most popular. With direct integration on OpenSea — the largest Polygon NFT marketplace and a gallery to view your digital collectibles, MetaMask is also the best choice for beginners.
Metamask is a kind of digital wallet, but it is far different from your ordinary digital wallet, Metamask uses and takes advantage of the new blockchain technology, to store, and secure all the information and transactions of its users.
Metamask is not only a wallet but also a key, it will serve as a key at some of your transactions online, instead of creating and memorizing some different passwords and accounts and using it on every transaction, Metamask will serve as a universal key that enables you to complete the transaction with just a click of a button, all you need to do is to set up a Metamask Wallet, create your password, memorize your 12 secret phrases (recovery phrase) and it's all done, once the setup is complete, you can do all transaction using your Metamask Wallet with a power of a click.
To set up MetaMask on a mobile device, you will need to visit either Google Play or the App Store. Here are the official download links for MetaMask:
Follow the instructions, read through the terms, and click "I Agree" to continue the setup process.
The first step in getting set up with MetaMask is creating a wallet. Click on the "Create a Wallet" button. You will then need to create a password with a minimum of eight characters that you will use to log in to the mobile app in the future.
Your Secret Backup Phrase is a way to easily backup and restore your account at any time. It consists of twelve words in a particular sequence. It is essential to memorize this, write it down on a piece of paper and place it in a safe place.
Without your Secret Backup Phrase, it will be impossible to restore your account. You can download the phrase and store it on an external encrypted hard drive or storage device for added security. We do not recommend copy and pasting it into a notepad and leaving it on your desktop. If your computer gets stolen, hacked, or someone finds the file, someone can easily log in to your MetaMask wallet.
Confirm your Secret Backup Phrase on the next on-screen prompt when you have it safely stored. This step ensures you have the correct phrase on hand in case you need to restore your account. After confirming your Secret Backup Phrase, click on the "All Done" button. You have now created a MetaMask wallet and are connected to the Polygon Mainnet and congratulations you have now your first Metamask Wallet!
From the account options, which is a circle icon, go to Settings.
Once you are in settings, select Networks.
Press the Add Network button.
You'll need to add the following details on the Add a network page that will open. Click Save when you're finished.
| Network Name | Polygon |
| New RPC URL | Choose any of the following:
https://polygon-rpc.com https://rpc-mainnet.maticvigil.com |
| Chain ID | 137 |
| Currency Symbol | MATIC |
| Block Explorer URL | https://polygonscan.com/ |
Your settings should look similar to the following image.
You'll now successfully be connected to the Polygon network.
Don't have Polygon? Then check out How to buy USDC with MetaMask?
There are many crypto wallets to choose from, but MetaMask is the most popular. With direct integration on OpenSea — the largest Polygon NFT marketplace and a gallery to view your digital collectibles, MetaMask is also the best choice for beginners.
Metamask is a kind of digital wallet, but it is far different from your ordinary digital wallet, Metamask uses and takes advantage of the new blockchain technology, to store, and secure all the information and transactions of its users.
Metamask is not only a wallet but also a key, it will serve as a key at some of your transactions online, instead of creating and memorizing some different passwords and accounts and using it on every transaction, Metamask will serve as a universal key that enables you to complete the transaction with just a click of a button, all you need to do is to set up a Metamask Wallet, create your password, memorize your 12 secret phrases (recovery phrase) and it's all done, once the setup is complete, you can do all transaction using your Metamask Wallet with a power of a click.
To create your MetaMask account, simply download the mobile app on your iOS or Android device or browser extension for your desktop (MetaMask currently supports Chrome, Firefox, Brave, and Edge). Unless you strongly prefer to buy NFTs on your mobile device, we recommend the desktop app as it's easier for first-time users.
After clicking the download now button it will lead you to installation options, you can choose from the three operating systems that you want to use Chrome for PC, iOS, and Android. Since this tutorial is for laptops, install Metamask on Chrome browser extension, based on the operating system that you are using. The appearance may vary a little but the procedure is almost the same.
To install MetaMask on your mobile phone, check out Setup an Polygon Wallet (Mobile)?
Next step, after clicking the install to Chrome, a new tab will appear its a chrome web store, just click the button that says "Add to Chrome" just wait a few minutes or seconds and another tab will appear it is now ready to set up our first Metamask Wallet.
In a separate tab, a greeting from Metamask will appear, just click the get started button, then there will be two options the import wallet, and create a wallet, since this is our first time just choose create wallet button and you will be head to Metamask terms that has a line like "Help us Improve Metamask", just click the agree button to continue.
Next is creating a unique password, this is very important since you will be using this password every time you open your Metamask Wallet, the password must be at least a minimum of 8 characters, as a rule of thumb avoid using passwords like birthdays, wedding anniversary or anything that can easily guess.
After creating a password, Metamask will introduce you to the secret recovery phrase and give you some information about it, like what you should do and what you should not.
After it finishes, you will get your 12 secret recovery phrase. Before proceeding to the next step make sure you write down the 12 secret phrases correctly and orderly, store your secret phrase in a safe place dont ever lose or forget about the phrase since it is the only way to retrieve your Metamask account once your device was lost, damaged or stolen.
After writing down your secret phare just click next to proceed.
Next step you will need to confirm the secret recovery phrase that you've written, just click the phrases according to the right sequence, after confirming your secret phare is has been done, congratulations you have now your first Metamask Wallet!
For a quicker way, click here to add Polygon to your MetaMask. Read the rest if you want to learn how to do it manually.
Adding Polygon support to your wallet involves adding some network details to the extension. First, open MetaMask and click the network dropdown menu.
Next, click Add Network on the pop-up.
You'll need to add the following details on the Add a network page that will open. Click Save when you're finished.
| Network Name | Polygon |
| New RPC URL | Choose any of the following:
https://polygon-rpc.com https://rpc-mainnet.maticvigil.com |
| Chain ID | 137 |
| Currency Symbol | MATIC |
| Block Explorer URL | https://polygonscan.com/ |
Your settings should look similar to the following image.
You'll now successfully be connected to the Polygon network.