If you want something that doesn't otherwise significantly affect people's lives, your best bet is lack of electronics manufacturing capability (and of the ability to import it).
Most of our current advanced electronics have fairly short design lifetimes, because they become obsolete so quickly. This holds true for a handheld device as well as internet infrastructure; all of the myriad chain links that make the Internet possible need constant maintenance and replacement, which would be made difficult-to-impossible if you couldn't get replacement parts within, say, a month.
If you want to exacerbate the issue further, add omnipresent dust. If it gets inside a device, it will cause components to overheat/melt and connections to fail, so you'll have fairly short lifetimes even on simpler electronics than your average iPhone.
It will still be possible to have environment-proofed devices, but those won't last forever and once broken will be impossible to fix (because if you open them up, the dust gets everywhere). And they will not be connected to any kind of "internet", because that would be impossible to keep operable.
This is a fairly mundane solution that rules out most electronics, but still allows some capability for those who are rich enough to get the proofed versions and keep them in operation.