Smartphones

T-Mobile Sidekick II (Danger/Sharp) (2004)

T-Mobile MDA by HTC (Windows Mobile 5.0, 2005)

HTC Snap (Windows Mobile 6.1, 2009)

HTC HD7S (Windows Phone 7, 2011)

Nokia Lumia 520 (Windows Phone 8, 2013)

Nokia Lumia 822 (Windows Phone 8.1, 2014)​

Nokia Lumia 830 (Windows 10 Mobile, 2016)

Nokia 3.1 Plus (Android 10, 2018)

Nokia 7.2 (Android 11, 2020)

Samsung Galaxy A51 5G (Android 12, 2023)

Samsung Galaxy A54 5G (Android 12, 2025)

Lumia Windows Phones are underappreciated.

Among all the models, the 800 series are probably the best deals.  Lower models have smaller sreens (e.g. 4" for Lumia 435), smaller memory size (e.g. 512 MB for Lumia 521), smaller storage space ( 8GB).  The 5" screen, 1 GB memeory size, 16 GB storage spae of the 800 series is adequate for most purposes.  Lumia 830 is highly rated by users (9.3/10).  Lumia 830 can be upgraded to Windows 10 Mobile.