The 40 has a 6.78 Nxtpaper display with a resolution of 1080 by 2460 and has 450 nits of brightness. The screens have a capacitive touchscreen and are compatible with the T-Pen for jotting down notes, making to-do lists or editing PDF documents. It has a matte screen protector installed at the factory, cutting down on glare from the sun and overhead lighting.
Underneath the hood is a 1.8 GHZ octa-core processor, a Mali 562 GPU. The 40 has 8GB of RAM, 256GB of storage, and an SD capable of 2TB of extra storage: Bluetooth 5.1, WIFI, LTE/5G, G-Sensor and accelerometer. The rear camera is 50MP; the front is 32MP. It is powered by a 5100 mAh battery.
Android 13 is preinstalled, and TCL has promised to push out Android 14 when it is ready. Google Play and Google Play Services are installed. This phone has the same tech as the TCL Nxtpaper 12 Pro instead of Nxtpaper 11. This provides a faster user experience while still being easy on the eyes. They have e-reading mode, which will make the background grey and offer better contrast with black text. This is useful for browsing the web or reading ebooks, manga or webtoons.