The Galaxy S21 series is still a great choice if you're looking to pick up a flagship phone. The standard Galaxy S21 debuted at $800 as Samsung switched to a plastic back, and the move paid off for the brand. The Galaxy S21+ took those fundamentals, increased the screen size, and switched to a glass back.

But it's the Galaxy S21 Ultra that's particularly noteworthy this year because it got the 108MP camera at the back, the QHD+ AMOLED screen, and 12GB of RAM as standard. At $250 off, it's one of the best Cyber Monday Android phone deals. You won't even need an old phone to trade in to get this great price!

Samsung Galaxy S21 Ultra Phantom Black Render Reco

Samsung Galaxy S21 Ultra | $250 off at Amazon

The Galaxy S21 Ultra continues to be the Android flagship to beat at the end of 2021, offering a fabulous 120Hz QHD+ AMOLED screen, powerful internal hardware, 12GB of RAM, outstanding cameras with 10x optical zoom, and a large battery with all the extras you can think of.

$950 at Amazon

If you've got just about any old phone — even one with a cracked screen — Samsung runs a great trade-in program that gives you instant values online with no hassle. No matter which model you choose, Samsung could take as much as $600 off the price of a brand new Galaxy S21.

If you're an AT&T or Verizon customer, both companies have terrific Galaxy S21 Cyber Monday deals that could get you one of these phones for free. What's better than that? Nothing, that's what.

Samsung Galaxy S21+ in Phantom Silver

Samsung Galaxy S21+ | Save with a trade-in

The Galaxy S21+ is a decent alternative, but you're not saving a lot of money here, and you miss out on the QHD+ screen and the 108MP camera at the back. That said, it is smaller and lighter, so if you want something more manageable, it is a good choice.

From $450 at Samsung with trade-in
Samsung Galaxy S21 Render

Samsung Galaxy S21 | Save with a trade-in

The regular Galaxy S21 is still a great option, offering the latest hardware, standout cameras, all-day battery life, and a sublime 120Hz AMOLED screen. You're not missing out on much here, and the plastic back means you can get your hands on the S21 for less.

From $250 at Samsung with trade-in

Another area where Samsung is doing all the right things is software. The Galaxy S21 series is already receiving the stable Android 12 update, with One UI 4 offering new features and a slight visual refresh.

And with Samsung delivering Android updates for three years and four years of security updates, you don't have to worry about your Galaxy S21 staying up to date. If I had to pick a phone of the three, I'd go with the S21 Ultra — you're just getting a lot more for your money.

We may earn a commission for purchases using our links. Learn more.