On the Galaxy Tab S4, you'll rely on Samsung's iris scanning technology to securely unlock the device and log you into all of your apps. On the Galaxy Tab S4 and S5e, this is handled very differently between the two devices. Security authentication, such as fingerprint sensors and face unlock, is expected on just about every new device we buy these days. You can also configure the S5e with 2GB of extra RAM, and while its maximum base storage is less than the Tab S4, it supports a larger amount of expandable storage with its microSD card. In regards to its security, it uses a traditional fingerprint sensor and face unlock which a lot of people will likely prefer over the Tab S4's iris-scanning system. In fact, the Galaxy Tab S5e even has a few key advantages over the S4. Its Snapdragon 670 processor is just as snappy as the older 835 chipset in the S4, it's rocking the same Super AMOLED display, its camera combo is identical, and both tablets support Samsung DeX with an optional keyboard accessory to help you stay productive while on the go. If you don't need the S Pen, LTE, and are okay with slightly less battery endurance, the Galaxy Tab S5e is essentially the same tablet with a price tag that your wallet will like a lot more. Why you should save your money and get the Tab S5e Lastly, it's worth giving the Tab S4 some praise for its optional LTE model (available for Verizon, Sprint, and AT&T) which allows you to stay connected even when Wi-Fi isn't nearby, as well as a docking station accessory that can essentially turn it into a makeshift smart display. Your mileage will undoubtedly vary depending on what you're using your tablet for, but as a general rule, expect to get a bit more time in between charges with the Tab S4. You also get the added benefit of a larger battery, which, according to Samsung, allows for up to 2 hours of additional use of video playback. We all know how great the S Pen is on devices like the Galaxy Note 9, and with an even bigger canvas to work with on the Tab S4, it's that much better. Some of the highlights of having the S Pen include being able to quickly create handwritten notes, draw/doodle, and simply having a more precise way to interact with the touchscreen. The S Pen opens up an entire world of possibilities you won't find with the Galaxy Tab S5e, and for some people, it'll be reason enough to go for the S4 over it. Perhaps the most significant advantage of the Tab S4 is its included S Pen. In fact, at first glance, you might be confused as to why anyone would spend extra for the S4 when the S5e matches it in so many ways. Specs-wise, the Galaxy Tab S4 and S5e have a lot in common. It offers a very similar experience, even more RAM, and supports more expandable storage at the expense of less battery life. With that said, if you don't need an S Pen or LTE, you can save quite a bit of money and get the Galaxy Tab S5e.
If you want an ultra-premium tablet with great internals, lots of expanded capabilities with an included S Pen, and the option to have on-device LTE, the Tab S4 brings a lot to the table. With the Galaxy Tab S4 and S5e, you have two great tablet options depending on what you're in the market for.