I used my E6 for almost ten years (replaced the battery once). 3~4 years is just the life of the lithium battery. Nowadays it is the software's fault that perfectly serviceable devices are out of use. I give about 1½ years before they give up.
True, I have had my Galaxy S7 since 2016 and the battery conks out after about 2-3 hours of use (Youtube, web browsing, Reddit). I keep it around for the small form factor, which is useful to test websites on.
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I used my E6 for almost ten years (replaced the battery once). 3~4 years is just the life of the lithium battery. Nowadays it is the software's fault that perfectly serviceable devices are out of use. I give about 1½ years before they give up.
True, I have had my Galaxy S7 since 2016 and the battery conks out after about 2-3 hours of use (Youtube, web browsing, Reddit). I keep it around for the small form factor, which is useful to test websites on.
Nokia phones guarantee 3 years of OS and security updates.