I recently got the 5.02 update on an Xperia Z1 and here's what I've found so far-
memory leak bug fixed by Sony (this was publicly mentioned by Sony as well)
No Cell Standby battery drain bug (I'm showing an average of only 3% in battery usage settings)
Faster and smoother than any version of Android I've ever used
Conversely, it took the most recent 5.1 update to resolve these issues on my Nexus 5 and 7. This is something I've noticed all along from Sony. Their software engineers appear to be really good at optimizing their Android releases. I started out with Jellybean on that phone and was getting better performance on it than others were reporting on KitKat. A lot of people are speculating that the Cell Standby and Memory leak bugs had to be resolved by Google before the OEM's could make a fix patch so this leaves me wondering if that's true because Sony appears to have taken care of it without needing 5.1, just as they addressed a lot of JB and KK issues that others weren't seeing resolved until the final versions of those.
It's also possible that my update method could also play a role. I always use my PC with a wired USB connection to update, even if it's available OTA. Then I reboot and immediately factory reset. After that I reboot again and uninstall any bloatware and stock apps I don't use that are able to be uninstalled and disable the ones that can't. Reboot again and then use normally.
memory leak bug fixed by Sony (this was publicly mentioned by Sony as well)
No Cell Standby battery drain bug (I'm showing an average of only 3% in battery usage settings)
Faster and smoother than any version of Android I've ever used
Conversely, it took the most recent 5.1 update to resolve these issues on my Nexus 5 and 7. This is something I've noticed all along from Sony. Their software engineers appear to be really good at optimizing their Android releases. I started out with Jellybean on that phone and was getting better performance on it than others were reporting on KitKat. A lot of people are speculating that the Cell Standby and Memory leak bugs had to be resolved by Google before the OEM's could make a fix patch so this leaves me wondering if that's true because Sony appears to have taken care of it without needing 5.1, just as they addressed a lot of JB and KK issues that others weren't seeing resolved until the final versions of those.
It's also possible that my update method could also play a role. I always use my PC with a wired USB connection to update, even if it's available OTA. Then I reboot and immediately factory reset. After that I reboot again and uninstall any bloatware and stock apps I don't use that are able to be uninstalled and disable the ones that can't. Reboot again and then use normally.
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