Don’t let size fool you. My phone is more powerful than some desktops. If you have 16GB of RAM you can add a different browser without concern.
The Edge site says the latest version of Edge gives you a “Details” link and the ability to go on to the Web page if you click Details. If you don’t have that you may need to update manually.
Yes, most phones these days are powerful. Whodathunkit when the first phone bricks came out?