iPhone 5 or earlier Uses for an iPhone 4S in 2023 if I jailbreak it or don't?

[2aw]

• 1) I just got an old iphone 4S, the iOS version is 9.3.5, the latest is 9.3.6 for this phone, should I update it?
• As for apps, it cannot run spotify or google drive or most modern apps.
• I don't need another mp3 player, and I don't want to go though the hassle of transfering music anyways.
• 
  
• So my questions are:
• 2) if I DON'T jailbreak it, what can I do with this phone (other than basics talk and text and use the camera etc)
• 3) If I DO jailbreak it, what can I do with it? (I never jailbroken an iPhone before, never needed to thats why)

 

[Andeddu]

You can run some of the base apps on iOS such as Apple Music and Podcasts… you should also be able to FaceTime on it but that’s about it.

 

[arw]

Besides the basic apps, you ruled out the most recommended use case - mp3 player. There is not much left.
Assuming you get it jailbroken, AirServer transforms your iPhone into a free Airplay reveiver to connect to a sound system.
Without jailbreak, I use my iPad 2 (9.3.5) for VNC, watching cable TV, Plex and as local surveillance camera but the small screen of the iPhone is barely usable for these scenarios.