How many years does an iPhone 5s last for?

If I take good care of my iPhone 5s with a good case in how many years do you think it would last for? 16 gb

My five year old iPhone 4 is still going strong and still on the original battery, and I have a few friends still using that model S well. So I'd expect the 5s I also now own to last at least as long.

The limiting factor is likely to be the poverty-specification of just 16Gb memory. That's what my 4 had five years ago, and as my needs increased I had to buy a 64gb 5s. Three to four years. Usually the phone will be too old to update to the new iOS after about 3.5 years.

Three to four years. Usually the phone will be too old to update to the new iOS after about 3.5 years.

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