Thanks for the explanation. Very helpful data.
In general an older device benefits more from rooting than newer devices. This is because older devices have less working memory and processing power and benefit more from getting background processes reduced to a minimum. I should earn you that Rooting can and probably will void the warranty on a new device if you are unable to unroot it and return it to its factory original state. And there are many financial apps and others which will not run on a rooted phone.
The Samsung Galaxy S3 which had been in development since 2010 and I have a lot of experience with was originally released to the U.S. market in 2012 and by the end of its production run 70,000,000 units had been sold with no recalls. The phone has been tweaked and modified in every imaginable way. By today’s standards it has weak specs, but largely because of its reputation and customization S3s in excellent condition still are worth quite a bit on eBay and Amazon. People have even managed to get the latest versions of Android to run on it.
My first experience with a true smart phone was with a PPC-6700 which was a Windows mobile device released in 2005. It had 3g data and could be “tethered” to your laptop to get a “high speed” internet connection on the road. It was a truly amazing device in the age of Blackberries. It was my introduction to phone modification and I was quite active in the modification community surrounding that phone. 2 years later when the first iPhone was released it’s capabilities seemed laughable to my friends and I, but they took off and altered everyone’s perception of what a smart cell phone should be.