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Small-Scale Question Sunday for October 20, 2024

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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Does anyone here know anything about "flip" cell phones, or any advice or meta-advice for shopping for one in the US? I've been thinking for a while that it'd be nice to be able to turn off my smartphone for "offline" time without being cut off from anyone who might need to reach me.

The problem is you'll have to physically swap over your SIM card every time. Actually, now that eSIMs are a thing I wonder if it's even possible to bounce between handsets in the way you're looking to.

If all you want is offline time then it's a lot easier to just switch off internet connectivity. You can probably get an IfThisThenThat app that could automate regular online/offline times. A quick search suggests it can be done natively in iOS.

Would separate SIM cards not work? The idea I had was to have an occasionally-on smartphone for regular things and an always-on flip phone for critical things. Sort of the same use case as a house phone.

I currently have an Android phone. It has a toggle for Wi-Fi and one for 4G connectivity, but I'm not aware of one specifically for "Internet" that still allows calls through. Not sure how that would differ substantially from just closing and reopening the Web browser. I guess it could be an easier way to toggle email notifications, but I can't see it meaningfully reducing the "onlineness" that I'm trying to get away from. Am I misunderstanding something?

Unless there's some way of cloning it your phone number is effectively locked to a single SIM card, so if you want either handset to receive phone calls to your number it needs to have that SIM inserted.

Hmm, just looked it up and apparently there are ways of cloning a SIM. You could look into that, I stopped at the search results page. SIM cloning is usually done for illicit purposes though so I'd expect it to present additional unexpected difficulties even beyond the incompatability you found trying to use a T-Mobile SIM in your Nokia. It almost certainly won't be supported* by the networks and their vendors though so unlike the T-Mobile/Nokia you can't just take it into a shop and ask them if you can try before you buy.

Wifi and 4G are the phone's means of connecting to the internet. Turn them off and you'll still have cell tower service for plain phone calls and SMS texts. You'd have no email, no browser, no doomscroll apps, no internet dependent notifications, but your "offline" apps will still work (things like the camera, timers, alarms, step counters... maybe maps? GPS will still work but it depends if you have the map saved locally for offline use).

I don't know what your skill set is like, and I've never done this, but I think an IfThisThenThat app should be able to do what you want with some simple rules that add up to "If it's between 5PM and 5AM then switch off wifi and 4G", or "if GPS is not [at the office] then switch off wifi and 4G".

*By "not supported" I imagine it could likely raise a flag of suspicious activity if two devices show up using the same SIM card simultaneously. One at a time would okay, but then that defeats most of the purpose of not having to swap the SIM between them.

Do you mean a flip-phone as in something resembling a pre-iPhone cell phone? They still exist: some are clearly marketed to seniors, but I suppose there are others that like them for 2003 nostalgia. In terms of actual hardware, it looks like they can be found pretty cheaply new and unlocked (<$100 US). I wouldn't try to use an old one because the mobile standards have moved on and 2G seems to have been phased out.

In terms of actual use, I'd say be prepared to get good at T9 typing. It used to be a fairly common skill.

Never mind 2G. The Nokia 2720 Flip that I bought a while back advertises 4G and Wi-Fi, but when I tried a T-Mobile SIM in it recently, I got a message saying that "this phone is only partially compatible with our advanced network"; and I wasn't able to make a call or send a message when I tried.

I'm unconvinced about the benefits of T9. Multi-press typing always made more sense to me; this sequence of presses produces this character, predictably and reliably, with no guesswork needed in either side. I guess time will tell.

Never mind 2G. The Nokia 2720 Flip that I bought a while back advertises 4G and Wi-Fi, but when I tried a T-Mobile SIM in it recently, I got a message saying that "this phone is only partially compatible with our advanced network"; and I wasn't able to make a call or send a message when I tried.

Band compatibility issue. It looks like they only made an EU version and a MENA/Asia version, and the band support on both models has close to zero overlap with the frequencies used in the US. This is a little surprising, because these days (afaik) it's pretty cheap and easy from a hardware standpoint to include as many bands as you want on a phone (at least for 4G/LTE; 5G is a bit of a different story). I guess they didn't anticipate any US sales.

Bands 5 and 41, the latter only present on the MENA/Asia model, are the only supported ones used in the US. T-Mobile US does not have any band 5 licenses as far as I know. You could get away with using it on AT&T or Verizon, but you'd have to determine which one of them owns the band 5 licenses in your area (confusingly this can be both AT&T and Verizon, one of the two, or neither of them) and it would not work nationwide. T-Mobile does have band 41 licenses (almost) nationwide, but they're in the process of repurposing that spectrum for 5G (and it was never meant to be used for full-coverage voice even when originally deployed as LTE).

If your only concern is voice and text, the bands you want for USA 4G/LTE compatibility are 2, 4, 5, 12, 13 (Verizon-only), and 71 (T-Mobile-only).

You can buy so called ‘wise phones’ which work like a smart phone with no internet access. Usually they’re marketed as kid phones.

Sounds far in the opposite direction of what I'm looking for in compactness and convenience/ease of use; but will keep it in mind as an option.