To turn your old phone into a distraction-free reading device without spending $200 on an e-reader, make simple tweaks.
First, replace the default launcher with a clean and minimalist one. Before Launcher is a popular choice that replaces app icons with a text-based list of important apps. This will reduce distractions and improve performance.
Uninstall unnecessary apps and games to make your phone run better and minimize distractions.
Adjust display settings to make your old phone’s screen comfortable for reading:
* Enable blue light filter or Night Shift to warm up the display and reduce blue light emission.
* Turn on grayscale mode to strip away colors and reduce temptation from non-reading apps.
Install your favorite reading apps, such as Amazon Kindle, Libby, Apple Books, Google Play Books & Audiobooks, or ReadEra. You can have multiple apps for a personalized experience.
Add a matt screen protector and a simple stand, like PopSocket grip or phone strap, to make your phone feel more comfortable while reading.
Source: https://www.makeuseof.com/turn-old-phone-into-ereader