u/Useful_Astronomer823

For a long time, I thought of updating my iPhone 13 after a battery replacement, but just for experiencing a little boost in overall performance, I have recently updated my iPhone to iOS26.6 from iOS 18.7.

For the past week, apps do open quite faster than prev version, performance on games has been improved, new home and lock screen customisation are great and UI is fluid, i like some of new subtle animations here and there, Photos apps is finally organised properly.

Issues i noticed are;

1. Battery drains faster than before.
2. Multiple apps don't cache itself in the background for multi-tasking and fast re-opening. It can handle 3 apps (max). I guess for a 3.5GB RAM iPhone, this is the best it can do.
3. Wifi signal has some issues, often fluctuating.
4. Apple Music app drains the battery fast than before even on off-screen.
5. SOT on iOS18.7 has been over 7 hours(avg) on a single charge, but after the update SOT has reduced to 6h 30mins(avg).

>Keep in mind, I'm not a power user. I mostly use light weight apps and few heavy apps like brawl stars and wuthering waves.

Battery health is 82%.

Have you received test links?