The iPhone 6 and iPhone 6 Plus were released in late 2014, while the iPhone 6s and iPhone 6s Plus were released in late 2015. That is a significant life for any device to perform, and it is only a matter of time before electronic gadgets start to wear off from general use. Obviously, 2 to 3 years sound excessively soon for an entire phone to degrade. Still, that might just be the case, but only with your battery. If you are an iPhone user and have experienced your phone start to slow down or completely crash at random instances, the problem might very well lie within your iPhone’s power delivery system.
Back in 2016, many users had started reporting that their iPhones were randomly shutting down. The issue escalated to enough users that Apple had to acknowledge this. In January 2017, they released IOS 10.2.1 with a new feature that “added the ability for the phone to restart without needing to connect to power, if a user still encounters an unexpected shutdown”. This feature was designed to prioritise power over processor speed in order to ensure that the iPhone would last longer through the day, even if it meant that the performance might dip.
Now combine a degrading battery with this feature, and you get a device that just does not seem as quick as it used to be. However, this does not mean that just because your iPhone seems slow, that changing a battery will instantly make it as good as new. There are a lot of variables to be considered when dealing with a complex machine such as any smartphone. Taking your device to an authorised store for a check-up is always recommended. Nevertheless, spending a few thousand rupees on a new battery instead of the tens of thousands you’d need for an entirely new iPhone could just give you enough of a boost, at least a little while longer.