How long do people use their phones for?
This is a survey from phonearena.
and also
55% of mobile phone users plan to keep their devices for 3-5 years
A new study shows confirms the worst fears of mobile phone manufacturers like Apple and Samsung. According to responses from 3,640 mobile phone users shows that more than half of them plan to keep their current device for three to five more
thenextweb.com
Nowadays, I think people expect to use their phones for 3-5 years because phones are no longer slow unlike in the past, when it lags even on basic tasks.
In my opinion, most consumers who change their phones after 1-2 years do so due to poor initial decision-making, particularly those who lack the technical expertise or do not bother to evaluate their decision and jump the gun.
Last year, I decided against upgrading to the S22 Ultra because of its known issues with efficiency and overheating. The SD 8 Gen 1 chip is known to be fundamentally flawed and should have never been released due to its measurements.
For Qualcomm to regain its reputation, they had to forsake Samsung chip manufacturing and engage TSMC for the SD 8+ Gen 1 and also the SD 8 Gen 2. For people familiar enough, the surfaced efficiency improvements were not a surprise. Companies like NVIDIA, AMD, and INTEL have also preferred TSMC for the same reason.
The S23 Ultra uses the SD 8 Gen 2, ultimately resolving the battery life issue and overheating problems, making it an excellent all-rounder. Typically, people continue using their phones as long as it serves them well. As mentioned, performance improvements are not as big of a factor like in the past. Nowadays, features, robustness, and power efficiency are more essential. The S23 Ultra performs well in all those aspects. That's why it's a keeper.
Battery Care
My previous phone served me for 5 years. I replaced the battery by myself after 3.5 years as the estimated measured capacity health had dropped by ~35%, which is not bad for 3.5 years. However, battery deterioration is real, and there is no such thing as a battery that doesn't deteriorate.
Furthermore, lithium-ion batteries are known to be sensitive to high temperatures, which directly correlates to deterioration. This is not my opinion. It's a long-proven scientific fact with plenty of research and studies done to prove it.
What Causes Lithium-ion to Age?
Source:
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Temperature Effects on Lithium-ion:
Source:
https://batteryuniversity.com/learn/article/discharging_at_high_and_low_temperatures
Apple Guidelines on Maximizing Battery Life and Lifespan:
Source:
https://www.apple.com/batteries/maximizing-performance/
Next, I suggest using the protect battery feature because the -15% is much less than it seems. At 100% charge, some may be sharp enough to notice that the first 10%+ of the battery depletes much faster. The explanation below is shared by vuplix over 10 years ago, and still applies today.
For the full study, please refer to this link.
https://forum.xda-developers.com/t/...g-to-you-and-its-not-such-a-bad-thing.871051/
Anyway, this is not a post to say whether someone should or should not use fast charge. These are long-proven scientific facts in regards to batteries.