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Re: Bizarre behavior of a non-smart mobile phone

Cross-posted to 5 groups.

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On 2017-05-14, Mok-Kong Shen <mok-kong.shen@t-online.de> wrote:
> Am 15.05.2017 um 00:17 schrieb William Unruh:
>> On 2017-05-14, Mok-Kong Shen <mok-kong.shen@t-online.de> wrote:
>>> Am 14.05.2017 um 18:16 schrieb William Unruh:
>>>> You give zero information and you expect a reasoned amswer?
>>>> What make and model of phone? Who is your cell phone service provider? What kind
>>>> of SIM?
>>>>
>>>> I would bet against hacking.
>>>
>>> Not necessary for more informations from me. Following remark (2) below
>>> you'll have much more informations than you ever have time to study!
>>
>> Yes, right. Google will tell me all about your particular situation.
>> So, you refuse to give us any more information.
>
> Mmm, please tell me why is it essential that you know my cell phone
> service provider. (You have a list of good providers and one of bad
> providers, or what??)

Forget it. I have lost all interest.

>
> M. K. Shen
>>>>
>>>> On 2017-05-14, Mok-Kong Shen <mok-kong.shen@t-online.de> wrote:
>>>>>
>>>>> That a modern smartphone with Internet access and a multitude of nice
>>>>> features is liable of being hacked similar to a PC is evident. On the
>>>>> other hand, a non-smart mobile phone, of design of the earlier
>>>>> generation, unintelligent, clumsy, no Internet access, though yet
>>>>> purchasable for telephone and SMS purposes only, could IMHO easily
>>>>> mislead one to think that the device may be sufficiently secure against
>>>>> malicious manipulations. The fact, I presume, is however that, if an
>>>>> adversary is capable enough to enter the cellular network, he could
>>>>> access the SIM card to perform his malicious work. A recent personal
>>>>> experience of mine is the following: I bought such a device and a
>>>>> pre-paid SIM card, entered the telephone numbers of my friends into its
>>>>> contact address list and informed my friends of my new mobile phone
>>>>> number. Soon, though at a rather low frequency averaging roughly one
>>>>> event per day, a number of my friends complained that I had called them
>>>>> but strangely never attempted to say even a single word. It turned out
>>>>> that the device each time seemingly arbitrarily selected an entry in
>>>>> the contact address list and called automatically, which could also be
>>>>> verified by its list of all outgoing calls. As remedy I deleted all
>>>>> telephone numbers of my friends in it, leaving however for experimental
>>>>> purpose my own home telephone number. One following night I had then
>>>>> the uncommon experience of being awoken by a call from my own mobile
>>>>> phone! (Actually two new mobile phones of the same brand were tested.
>>>>> Following my complains of the said phenomenon, the vender gave me a
>>>>> new exemplar in exchange, so that the probability of there being a
>>>>> manufacturing problem is vanishingly small.)
>>>>>
>>>>> Another phenomenon that co-occurs with the above is that the device
>>>>> powers off automatically at a frequency comparable to the first, even
>>>>> though its battery is sufficiently loaded.
>>>>>
>>>>> Being a layman in such issues, I should be very grateful for exact
>>>>> explanations of the phenomena.
>>>>>
>>>>> Remarks:
>>>>>
>>>>> (1) I am mainly interested in technical explanations of the phenomena,
>>>>> i.e. whether it is indeed true, and if yes how, that the SIM card in my
>>>>> mobile phone got manipulated, and personally deem it neither favorable,
>>>>> nor essential, realistic, etc. to conjecture on the motivations behind
>>>>> such manipulations, if these indeed happened.
>>>>>
>>>>> (2) Googling with e.g. "cell phones calling themselves" will turn up
>>>>> a lot of apparently similar cases which, I guess, could stem from
>>>>> diverse different causes in practice. It seems that there have not been
>>>>> much scientifically exact and detailed investigations done on the issue
>>>>> and that the phenomenon can occur both to modern smartphones with
>>>>> Internet access (hence higher liability of being hacked) and to the
>>>>> non-smart mobile phones without Internet access.
>>>>>
>>>>> M. K. Shen
>>>>>
>>>>> ----------------------------------------
>>>>> http://mok-kong-shen.de
>>>
>

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Thread

Bizarre behavior of a non-smart mobile phone Mok-Kong Shen <mok-kong.shen@t-online.de> - 2017-05-14 11:51 +0200
  Re: Bizarre behavior of a non-smart mobile phone William Unruh <unruh@invalid.ca> - 2017-05-14 16:16 +0000
    Re: Bizarre behavior of a non-smart mobile phone Mok-Kong Shen <mok-kong.shen@t-online.de> - 2017-05-14 21:19 +0200
      Re: Bizarre behavior of a non-smart mobile phone William Unruh <unruh@invalid.ca> - 2017-05-14 22:17 +0000
        Re: Bizarre behavior of a non-smart mobile phone Mok-Kong Shen <mok-kong.shen@t-online.de> - 2017-05-15 00:42 +0200
          Re: Bizarre behavior of a non-smart mobile phone William Unruh <unruh@invalid.ca> - 2017-05-15 03:00 +0000
            Re: Bizarre behavior of a non-smart mobile phone Mok-Kong Shen <mok-kong.shen@t-online.de> - 2017-05-15 06:25 +0200
              Re: Bizarre behavior of a non-smart mobile phone Serg io <invalid@invalid.com> - 2017-05-21 13:26 -0500
                Re: Bizarre behavior of a non-smart mobile phone Shadow <Sh@dow.br> - 2017-05-24 19:43 -0300
                Re: Bizarre behavior of a non-smart mobile phone Mok-Kong Shen <mok-kong.shen@t-online.de> - 2017-05-25 11:47 +0200

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