How to speed up an unconfirmed transaction in Ethereum?

It is not possible to replace or cancel confirmed transactions on the Ethereum network. But when the network load is high, transaction confirmation can take several hours or several days. To speed up, you can replace the pending transaction with a higher commission because these are the transactions miners process in the first place. The cost of gas in the Ethereum network depends on the transaction complexity but users set the price and gas limit on their own. If the price is too low, the transaction will be pushed back by higher bidders. To speed up the transaction confirmation, you need to select the acceleration item in the wallet settings menu to notify the miners again and increase the gas price.