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Who seriously uses 64GB of RAM on a #+(@*#*$ phone? Don’t tell me they are doing multitasking cause it’s fallacy. iPad Pro right now can’t even fully utilise 16GB because of iOS.

Base 1TB is not really possible in the near future either as prices of silicon will steadily go up, which then will drive iPhone price up. 1TB could mean a starting price of $1599. Do you want that?
 
iPhone is 14 years old.
First iPhone had 128 MB of RAM and starting storage of 4 GB (up to 16GB).
Apple’s game plan for iPhone is always growth, so as iOS becomes more bloated over the years, more RAM will be required to run it — but 64 GB seems a bit high. I can imagine a top tier iPhone 20 years from now coming with a 32 GB RAM option.
 
In two decades' time, an iPhone will appear just as quaint as a first generation iPod does today. Who remembers what amount of RAM those had?

VR and AR will probably rule the day, with apps opening up as parts of your visual field, the amounts of ram and processing power will be vastly different from what we know now (e.g. 64 MB of ram was considered a good amount back in 2001, that amount of ram is not even a drop in the ocean now, let alone the almost unimaginable difference in ram speed).
 
Only time will tell. Computers used to have like 128KB of ram (that’s kilo, not mega).128MB seemed astronomical at the time. The first iPhone had 128MB of ram. 8GB seemed astronomical at the time. Sure, 64GB sounds excessive right now, but after watching computers change over the past 30 years or so, its pretty believable that phones could have 64GB in a couple of decades. In fact, I think it’s a bit ignorant to be “certain” that it won’t happen.
 
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Who knows. But we’ve reached a point where significant jumps in RAM or processing power has steep diminishing returns. I’ve used 16 GB in my desktop PCs for about a decade and is still enough for all of my use cases.
 
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At least 64GB RAM.

A decade ago, iPhone 4S had 512MB RAM. Today, iPhone 13 Pro has 6GB.

Using the same rate of increase, we can expect 96GB RAM in the next decade.
 
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