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Re: SD card vs. Esim? Samsung vs. others?

From Nuno Silva <nunojsilva@invalid.invalid>
Newsgroups comp.mobile.android
Subject Re: SD card vs. Esim? Samsung vs. others?
Date 2026-08-15 11:51 +0100
Organization A noiseless patient Spider
Message-ID <115pgc6$37eta$12@dont-email.me> (permalink)
References (7 earlier) <ne0fflFebrbU1@mid.individual.net> <115fi1k$2258$1@nnrp.usenet.blueworldhosting.com> <ne912eFp2hrU1@mid.individual.net> <115pb8n$37eta$8@dont-email.me> <neas5jF35q2U2@mid.individual.net>

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On 2026-08-15, Carlos E. R. wrote:

> On 2026-08-15 11:24, Nuno Silva wrote:
>> On 2026-08-14, Carlos E. R. wrote:
>>
>>> On 2026-08-11 18:19, Maria Sophia wrote:
>>>> Andy Burns wrote:
>>>>>> Maybe I don't understand the purpose of an esim, as it's not storage.
>>>>>
>>>>> Same as a SIM, it identifies you to a mobile provider for access to
>>>>> their network, but without needing a physical SIM swap (except in the
>>>>> special cases as discussed of a physical eSIM).
>>>>>
>>>>> I've tended to stick with physical SIMs as they can be moved between phones.
>>>>
>>>> Thanks.
>>>>
>>>> That's why I didn't understand Carlos' response of...
>>>>     "As we can use eSIMs instead, which is the advantage?"
>>>>
>>>> When I had said...
>>>>    "In summary, anyone saying sd cards are obsolete,
>>>>     knows nothing about them."
>>>>
>>>> Maybe he meant that if there is a dual-purpose slot, that he'd rather use
>>>> the physical slot for an SIM (but not an E-SIM) instead of an sd card.
>>>
>>> An eSIM must be some kind of electronic certificate, in a file.
>>
>> But a µSD card is used for general storage, it's not just a device that
>> could store such certificate files.
>>
>
> True. A SIM card adds menu entries pertaining to the ISP. It is more
> complicated.

It's a Smartcard, even though for decades it hasn't been using full size
cards.

It should be a computer in itself.

> But you are talking of the physical device (card) that
> adds eSIM functionality to a phone that doesn't have it.

No. That device is effectively a smartcard too or at least exposes a
smartcard interface.

I'm talking of a Secure Digital card, in this case on the "micro" form
factor and interface. These are storage devices with a different
interface. Although I guess it should be technically possible for
something entirely different to be there other than a storage device.

> I am talking
> of the eSIM, which is some type of file with a certificate and maybe
> software.

That's a separate concept to replace a physical Subscriber Identity
Module. In turn, the device that offers a "physical eSIM", to be of any
use, has to be compatible with the smartcard interface and the form
factors used for SIMs.


Secure Digital:
<https://upload.wikimedia.org/wikipedia/commons/6/67/SD_Cards.svg>

Subscriber Identity Module:
<https://upload.wikimedia.org/wikipedia/commons/8/8d/GSM_Micro_SIM_Card_vs._GSM_Mini_Sim_Card_-_Break_Apart.svg>

-- 
Nuno Silva

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Thread

SD card vs. Esim?   Samsung vs. others?  micky <NONONOmisc07@fmguy.com> - 2026-08-06 21:29 -0400
  Re: SD card vs. Esim?   Samsung vs. others?  micky <NONONOmisc07@fmguy.com> - 2026-08-07 09:15 -0400
    Re: SD card vs. Esim?   Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-07 16:42 +0200
      Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-07 15:50 +0100
        Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-07 17:30 +0200
          Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-07 17:30 +0200
    Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-07 17:27 +0200
      Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-07 22:09 +0200
        Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-10 02:28 +0200
      Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-10 17:41 +0200
        Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 09:24 -0800
          Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-11 10:38 +0200
            Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 02:01 -0800
              Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-11 12:32 +0100
                Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 08:19 -0800
                Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-14 19:20 +0200
                Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 10:24 +0100
                Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-15 12:08 +0200
                Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 11:51 +0100
                Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 13:40 +0100
            Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-11 13:28 +0200
          Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-11 13:27 +0200
            Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-11 12:39 +0100
              Re: SD card vs. Esim? Samsung vs. others? The Real Bev <bashley101@gmail.com> - 2026-08-15 10:38 -0700
            Re: SD card vs. Esim? Samsung vs. others? Frank Slootweg <this@ddress.is.invalid> - 2026-08-11 13:58 +0000
              Re: SD card vs. Esim? Samsung vs. others? Frank Slootweg <this@ddress.is.invalid> - 2026-08-11 14:12 +0000
              Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-12 20:36 +0200
                Re: SD card vs. Esim? Samsung vs. others? AJL <noemail@none.com> - 2026-08-12 20:40 +0000
            Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 08:19 -0800
              Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 08:52 -0800
              Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-12 20:44 +0200
                Storage media availability over time (was: Re: SD card vs. Esim? Samsung vs. others?) Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-16 09:20 +0100
                Re: Storage media availability over time Maria Sophia <mariasophia@comprehension.com> - 2026-08-16 10:01 -0800
            Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-14 19:28 +0200
        Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 10:22 +0100
          Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-15 08:50 -0800
    Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-10 02:27 +0200
      Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 08:34 -0800
      Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 13:02 -0400
        Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-11 06:20 +0200
          Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-11 14:37 +0200
            Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-11 10:21 -0400
            Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 08:18 -0800
            Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-12 06:00 +0200
              Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-11 20:47 -0800
              Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-12 17:03 +0200
                Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-12 20:41 +0200
                Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-13 18:59 +0200
                Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-15 07:56 +0200
                Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 11:00 +0100
                Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-15 08:34 -0800
                Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-15 12:10 +0200
                Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-15 19:33 +0200
                Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-16 06:23 +0200
                Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-14 00:21 +0200
                Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-14 20:23 -0800
                Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-14 00:20 +0200
            Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-14 19:37 +0200
              Re: SD card vs. Esim? Samsung vs. others? "s|b" <me@privacy.invalid> - 2026-08-15 19:34 +0200
              Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-15 20:09 +0200
    Re: SD card vs. Esim?   Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-10 17:38 +0200
      Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 11:49 -0400
      Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-10 18:04 +0200
        Re: SD card vs. Esim? Samsung vs. others? Steve Hayes <hayesstw@telkomsa.net> - 2026-08-11 06:33 +0200
          Re: SD card vs. Esim? Samsung vs. others? AJL <noemail@none.com> - 2026-08-11 05:54 +0000
            Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-11 10:10 +0200
              Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-11 10:18 +0200
            Re: SD card vs. Esim? Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-15 10:30 +0100
              Re: SD card vs. Esim? Samsung vs. others? AJL <noemail@none.com> - 2026-08-15 15:19 +0000
          Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-11 10:01 +0200
          Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-11 10:11 +0200
            Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-11 10:34 +0200
  Re: SD card vs. Esim?   Samsung vs. others? Siard <saylor259@mailbox.org> - 2026-08-07 16:57 +0200
    Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-10 02:32 +0200
      Re: SD card vs. Esim? Samsung vs. others? Siard <saylor259@mailbox.org> - 2026-08-10 09:25 +0200
        Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-10 08:47 +0100
    Re: SD card vs. Esim?   Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 09:40 -0800
  Re: SD card vs. Esim? Samsung vs. others? "Carlos E.R." <robin_listas@es.invalid> - 2026-08-07 19:15 +0200
    Re: SD card vs. Esim? Samsung vs. others? Jörg Lorenz <hugybear@gmx.net> - 2026-08-07 22:34 +0200
    Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 08:28 -0800
      Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-11 10:42 +0200
    Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-10 17:40 +0100
      Re: SD card vs. Esim? Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 09:28 -0800
  Re: SD card vs. Esim?   Samsung vs. others? Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-08 11:43 +0100
    Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-08 20:57 -0400
      Re: SD card vs. Esim?   Samsung vs. others? Frank Slootweg <this@ddress.is.invalid> - 2026-08-09 14:33 +0000
        Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-09 14:28 -0400
          Re: SD card vs. Esim?   Samsung vs. others? Maria Sophia <mariasophia@comprehension.com> - 2026-08-10 08:32 -0800
        Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-09 18:34 -0400
          Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 02:20 -0400
            Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-10 07:31 +0100
            Re: SD card vs. Esim?   Samsung vs. others? Dave Royal <dave@dave123royal.com> - 2026-08-10 08:59 +0100
              Re: SD card vs. Esim?   Samsung vs. others? Philippe <p.naudin+nntp@free.fr> - 2026-08-10 11:06 +0200
                Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-10 10:33 +0100
              Re: SD card vs. Esim?   Samsung vs. others? Dave Royal <dave@dave123royal.com> - 2026-08-10 10:51 +0100
            Re: SD card vs. Esim? Samsung vs. others? Arno Welzel <usenet@arnowelzel.de> - 2026-08-10 10:25 +0200
              Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-10 09:43 +0100
                Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 10:34 -0400
                Re: SD card vs. Esim? Samsung vs. others? "Carlos E. R." <robin_listas@es.invalid> - 2026-08-11 10:24 +0200
            Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 09:42 -0400
    Re: SD card vs. Esim? Samsung vs. others? Andy Burns <usenet@andyburns.uk> - 2026-08-09 09:49 +0100
      Re: SD card vs. Esim? Samsung vs. others? "Carlos E.R." <robin_listas@es.invalid> - 2026-08-09 15:21 +0200
      Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-09 14:21 -0400
        Re: SD card vs. Esim? Samsung vs. others? "Carlos E.R." <robin_listas@es.invalid> - 2026-08-09 22:31 +0200
          Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-09 19:33 -0400
            Re: SD card vs. Esim? Samsung vs. others? "Carlos E.R." <robin_listas@es.invalid> - 2026-08-10 02:48 +0200
              Re: SD card vs. Esim? Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 02:25 -0400
  Re: SD card vs. Esim?   Samsung vs. others? Frank Slootweg <this@ddress.is.invalid> - 2026-08-09 14:43 +0000
    Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 13:21 -0400
      Re: SD card vs. Esim?   Samsung vs. others? AJL <noemail@none.com> - 2026-08-10 18:01 +0000
        Re: SD card vs. Esim?   Samsung vs. others? micky <NONONOmisc07@fmguy.com> - 2026-08-10 14:55 -0400
          Re: SD card vs. Esim?   Samsung vs. others? AJL <noemail@none.com> - 2026-08-10 19:19 +0000
            [OT] non-Unix fingers (was: Re: SD card vs. Esim?   Samsung vs. others?) Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-11 01:00 +0100
          Re: SD card vs. Esim? Samsung vs. others? Java Jive <java@evij.com.invalid> - 2026-08-11 21:02 +0100

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