Can the Surface Laptop 15 run all Windows software?

Most mainstream apps run, but some x86 programs need emulation and can be slower. Games and some professional tools with anti-cheat or drivers do not work on ARM.

Is the 15-inch screen good for photo editing?

It is sharp and color-accurate enough for casual editing. The LCD panel has average contrast, so it is not the best choice for color-critical work compared with OLED rivals.

How long does the battery really last?

Microsoft rates it at 19 hours. Owners typically report a full workday of browsing and office work, less with video or heavy multitasking.

Can I upgrade the RAM or storage?

RAM is soldered and cannot be upgraded. The 1 TB SSD is the configuration you buy, so choose capacity up front.

Does it come with a pen or mouse?

No. The box contains the laptop and charger only; the touchscreen works with a Surface Pen sold separately.

How does it compare with the 13-inch Surface Laptop?

The 15-inch gives you a larger screen and the same chip family, at the cost of size and weight. The 13-inch is easier to carry; the 15-inch is better for split-screen work.