This Astrobin user shows Saturn and Jupiter images stacked from LG Nexus 5 videos. The Nexus 5 came out in 2013.
The smartphone is mounted on a C90 Mak through a 8-24mm zoom eye piece. On a tripod, no tracking.
https://www.astrobin.com/users/johnqevil/
That's a really cost efficient setup for planetary imaging. Ideal for beginners to venture into astrophotography - achievable with a 90mm Mak and even in city light pollution?