Uniswap is currently the most popular crypto exchange. But Uniswap Exchange is an exceptional type of exchange. That is why it is a little difficult to trade on Uniswap Exchange, especially for those who use Android phones.
Android phone users need Metamask, Trust wallet, Rainbow wallet etc. to trade on Uniswap. Now I will talk about how to trade on Uniswap using Metamask.
Step 1: First you need to download the Metamask app from the google play store.
https://play.google.com/store/apps/details?id=io.metamask&hl=en_US
Step 2: After installing the Metamask app on your phone, you can import your main wallet or create a new wallet. If you want to import the main wallet, you need to enter the seed phrase of that wallet and create a new password.

Step 3: If you want to create a new wallet, first you need to create a password. Then you have to write down the seed phrase of your new wallet and confirm it. Now your wallet creation is done at Metamask.


Step 4: If you add main wallet to Metamask, now you can able to trade. And if you create a new wallet, then you have to send the token and transaction fee from your main wallet to Metamask wallet. Then you have to add token to Metamask wallet.


Step 5: Then click on "Browser" from Metamask wallet.

Step 6: Then click on "Decentralized exchanges".

Step 7: Then select "Uniswap".

Step 8: Now you can trade on Uniswap.

I know there are many here who know much more than I do. If there is any mistake in this guide, please correct it. My purpose in writing this guide is just for those who can't trade on Uniswap yet.
Another useful topic:
(GUIDE) How to trade on uniswap correctly