The best non-smartphone Nokia phone, in terms of classic design and overall quality, is the Nokia 3310. This phone, which was first released in 2000, has been a staple in the mobile phone market for over two decades. Its durability, simplicity, and timeless design have made it a favorite among consumers worldwide.

The Nokia 3310 is renowned for its long-lasting battery life, which can last up to 21 days on a single charge. This is due to its lack of advanced features and a simple user interface, which consumes less power. According to a report by GSMArena, the 3310 has a battery capacity of 1200mAh, which is impressive for a non-smartphone.

In addition to its battery life, the Nokia 3310 is also known for its rugged build. It is resistant to dust and water, making it a reliable choice for users who need a phone that can withstand harsh conditions. This durability is a testament to Nokia's commitment to producing high-quality phones.

The design of the Nokia 3310 is also a major factor in its popularity. It features a classic candybar design with a physical keypad, which is reminiscent of the early 2000s. This design is not only aesthetically pleasing but also functional, as it provides a tactile experience that is often missing from modern smartphones.

Furthermore, the Nokia 3310 comes with a suite of classic games, such as Snake and Tetris, which are perfect for killing time during long commutes or waiting in line. These games are pre-installed on the phone, so there is no need for additional downloads or subscriptions.

In conclusion, the Nokia 3310 is the best non-smartphone Nokia phone due to its exceptional battery life, rugged build, classic design, and timeless appeal. Its enduring popularity is a testament to its quality and functionality, making it a top choice for those looking for a reliable and simple phone.