Introduction
Think about where you take notes before deciding how large a tablet to buy. If you regularly carry it between places and hold it while reading or writing, the Galaxy Tab S12+ deserves a closer look. If it usually rests on a desk or stand while you draw or consult material beside your notes, the Galaxy Tab S12 Ultra’s extra screen room may be more useful. Those are expectations based on their announced size and weight, rather than measured comfort or productivity gains.
What matters
Both models have the MediaTek Dimensity 9500 and include an S Pen in the box. You do not need to choose the Ultra to get the shared processor or an included pen. The same chip does not establish equal performance under sustained work, and there are no confirmed results here that make either model the winner for task speed or a full working day of battery use.
Samsung DeX is also shared: it supports opening, resizing and arranging apps. That can matter when you want to keep reference material alongside a writing app, but these remain Android apps. Check the apps and file-handling steps you actually need before counting on either tablet to replace a laptop. A larger display cannot resolve an incompatible workflow.
Key differences
The Plus has a 12.6-inch display and the Ultra a 14.6-inch display, measured across the full rectangle; rounded corners reduce the viewable area. The Ultra can give handwriting, drawing and adjacent material more room when a desk or stand supports it and the app layout makes good use of the space. That benefit depends on how you work, rather than following automatically from the larger diagonal.
The announced global Wi-Fi reference weights are 553 g for the Plus and 692 g for the Ultra. These are bare-device figures, and regional specifications may differ. The Plus leaves less tablet weight to carry and is the smaller body to handle, which favors frequent movement and handheld use. Try the grip and support you expect to use before treating that as a promise of comfort.
A keyboard changes both what you carry and what you pay. The Pro Keyboard, Book Cover Keyboard Slim and 45W power adapter are sold separately. The bare-device comparison does not tell you the weight of a keyboard setup, and complete package prices are unconfirmed. Include any accessories you need when comparing local offers.
Who each suits
The Plus is the stronger fit to consider if carrying and holding the tablet dominate your day. Consider the Ultra if supported writing or drawing is central to your use and you regularly need room for material beside it. Neither choice establishes a speed, battery-life or value winner.
Keeping a capable tablet is sensible if it already handles those tasks. If required app compatibility or purchase terms will decide your choice, wait until you can check them. A launch is planned for select markets, but that does not confirm that either model is on sale where you live. The US listing remains coming soon, US prices are unconfirmed, and matching local package totals are unavailable here. Regional offers need their own confirmation before you can judge a price premium or commit to a purchase.