Apple is one of the companies that takes care of its customers the most and I say this from my own experience with the few problems I had in the past with some of the firm's devices. On this occasion, the replacement campaigns or programs that they carry out from time to time are known to all users and this is a new one that covers the iPhone 6s and iPhone 6s Plus sold between October 2018 and August 2019.
Yes, it is possible that during this time you no longer looked at these iPhone models but the low prices (due to their age) make users look at them for their purchases and now a fault detected in the device's ignition causes that at Apple start this free replacement program for those affected.
You have an iPhone 6s or 6s plus it does not turn on look at its serial number
It may seem complicated to look at the serial number of an iPhone that does not turn on, but it is simpler than it seems and that is that this number is added in all iPhone cases so it is very easy to find it and see if our iPhone 6s or 6s Plus that does not turn on is affected with this problem and we can obtain a new unit in an official store of the company.
On the website where we have to enter the data as the usual in the specific section of Apple for replacement programs. Entering this section web we will be able enter our serial number and see if we are affected by this ignition problem. Logically, those who bought the iPhone when it was launched do not need to look at it, since the valid purchase dates are quite recent as indicated at the beginning of the article. Remember that these iPhone came on the market last year 2015 and therefore they are old models.
But how can they not give a solution if they are models under warranty !!! They have a maximum of 1 year. Any manufacturer must provide a solution.