Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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A friend asked me because I have free phone lines (e.g., Sideline, Google  
Voice/Hangouts, etc.) but *all* my equipment already has a SIM card.

Is there a way to get free telephone on GSM Android (tablets or phones)  
WITHOUT putting a SIM card into the phone?

Does it work on WiFi without a SIM card?

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
Horace Algier schrieb am 2016-09-15 um 19:55:

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When you define "free telephone" as "free VoIP service" - yes.

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Yes - as long as you install an app for this which handles VoIP. Android
itself does not need a SIM card to be online via WiFi.


--  
Arno Welzel
https://arnowelzel.de
http://de-rec-fahrrad.de
http://fahrradzukunft.de

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Thu, 15 Sep 2016 17:55:22 +0000 (UTC), Horace Algier

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Sure.  I carry a Moto G phone with no SIM.  Sometimes the phone is on
when I need to get a fast GPS fix or set the clock, which uses
cellular time, not GPS time.  However, mostly the phone section is
turned off which is almost the same as not having a SIM.  I use it as
a PDA (personal digital accomplice), GPS mapping, min-tablet, and of
course VoIP phone via Wi-Fi using Skype and various SIP phone
providers (Future-Nine, Callcentric, etc).  The nice part is that I
got the phone new for peanuts.  Best Buy had a deal with Verizon.  I
buy the phone from BB for about $50.  Then, I'm suppose to activate it
with Verizon.  Just one problem... I didn't bother activating it.  So,
I have a nifty mini-tablet with a 911 only phone.

As for tracking, there are patents on all kinds of bizarre tracking
devices.  Caltrans counts and possibly tracks cars by their Bluegoof
ID number.  Stores track customers around by their infrared signature.
There are devices that will direction find smartphones using Bluegoof,
wi-fi, or cellular allegedly for finding earthquake and disaster
victims in the rubble.  License plate readers are epidemic.  There are
biometric ID devices that will recognize people by their "emissions"
which includes olfactometry (smell).  I used to work on that stuff 40
years ago.  There's a contraption that measures floor pressure from
your weight.  Using recorded weight and stride, it will follow you
around a store.  Meanwhile, auto makers and rentals cars conveniently
leave RFID tags in their cars.

Give up while you're still sane.
--  
Jeff Liebermann     jeffl@cruzio.com
150 Felker St #D    http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann     AE6KS    831-336-2558

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Thu, 15 Sep 2016 11:29:01 -0700, Jeff Liebermann wrote:

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Too late!

Thanks Jeff for answering, as you're one of the few people here who back up
what you say.  

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Assuming Airplane mode is not on, without a SIM card, I think the phone
still pings cellular towers, for 911 (and 611) reasons.

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VOIP isn't the same as a "phone number".
What this friend is seeking is a phone number that can call POTS lines and
which can receive phone calls (I think receiving is the main goal) from
POTS lines.

I have free phone calls to and from my tablets, for example, whether on
WiFi or out on the road - but those tablets have a SIM card.

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You might be able to turn that mini-tablet into a "real" phone with a real
phone number, that can send and receive calls from a POTS line, for free.

I do that, for example, with my iPads, by installing Google Voice and
Hangouts. That way I can SMS send and receive texts and I can make and
receive POTS calls to the USA for free, just like with a real phone.

But I don't know if the SIM card is involved in that process.
Is it?

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?


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Most commercial VoIP services rent you a real local phone number that
allows you to receive calls from any phone. Incalls are usually free.
You can send calls to any phone with or without renting a number. But
outcalls are not free in most cases. No SIM card needed either way.

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Hangouts and VoIP don't need a SIM card if the calls are made over
WiFi.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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voip works over wifi

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Thu, 15 Sep 2016 13:58:21 -0400, nospam wrote:

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My fault for not being clear that a legitimate phone number was the goal.
Both sending & receiving POTS calls, for example.

Can VOIP receive a POTS call?
That is, does VOIP give you a real phone number of the format:
 1-800-555-1212

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
Horace Algier schrieb am 2016-09-16 um 20:11:

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Depends on the service you use. But generally - yes, this is possible
using a SIP service.


--  
Arno Welzel
https://arnowelzel.de
http://de-rec-fahrrad.de
http://fahrradzukunft.de

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Sat, 17 Sep 2016 21:21:08 +0200, Arno Welzel wrote:

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I'm unfamiliar with the term "SIP service".

Googling, I find...

http://www.sip.us/sip-vs-voip-whats-difference/

Which says:
"VoIP and SIP ... accomplish the same goal of connecting calls via the
Internet, they are not the same thing."

It defines SIP as:
 "Session Initiation Protocol (SIP) is a communications protocol that is
widely used for managing multimedia communication sessions such as voice
and video calls.  SIP, therefore is one of the specific protocols that
enable VoIP. ...So there really is no such thing as SIP vs. VoIP.  SIP is
an industry standard method of achieving VoIP."

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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You were certainly not clear in your original post and this muddies
the waters again. Does you friend really want to use a current POTS
setup to make and receive VOIP calls or does she want to use a mobile
phone or computer.

In either case she does not need to have a SIM card in any mobile
phone.
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A VOIP provider can supply a real incoming phone number. They can also
make it look as though an outgoing call came from a "real phone
number". The phone service will not be free but you can find one that
only charges on usage and the cost will be roughly the same as Skype
out.

Your friend still has to convert incoming and outgoing VOIP calls to
something that suits whatever phone she is using.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Sat, 17 Sep 2016 22:56:11 +1000, Gordon Levi wrote:

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The Android phone is a cheap (less than $100) GSM Android phone and the
friend doesn't want to buy a SIM card for it.  

He simply wants to have a "free" phone when on WiFI with a "real number"
that can make and receive calls from any other phone.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
Horace Algier schrieb am 2016-09-18 um 03:40:

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This is not possible. Usually only receiving calls on a "real number"
via WiFi and SIP is possible for free, but not making calls.


--  
Arno Welzel
https://arnowelzel.de
http://de-rec-fahrrad.de
http://fahrradzukunft.de

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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there are.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
nospam schrieb am 2016-09-19 um 23:52:
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I said "usually" not "only". There may be SIP providers where you can
make calls for free as well - but those I know ask for a fee for
outgoing calls.


--  
Arno Welzel
https://arnowelzel.de
http://de-rec-fahrrad.de
http://fahrradzukunft.de

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Tue, 20 Sep 2016 08:25:10 +0200, Arno Welzel wrote:

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Is Hangouts/GV SIP VOIP?

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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The easiest way to achieve most of this is with Skype
<https://www.skype.com/en/features/ . Skype will provide a real number
almost anywhere in the world and his callers will be charged their
standard rates to call this number. Skype will then handle the
incoming call so that it will show up on his cell phone as a normal
Skype call. Skype out will let him call real numbers from his phone at
greatly reduced prices compared to standard cell phone charges. Skype
out can display his Skype number as his caller ID.

I'm not sure why he would want to "make calls from any other phone"
using his Skype number but Skype won't let him do that. Of course he
can use any Skype capable device to make calls. Alternatively Skype
will supply a roaming number in many countries so that he can make
calls at Skype prices from other phones without using the Skype
application.

There are dozens of other VOIP providers that supply similar services.
A few will supply a real telephone number at no charge. In all cases
only the direct connection of two users using the same VOIP provider
are free to both ends of the call.

Most VOIP providers use SIP but Skype uses its own protocol for
connecting calls. This won't matter to your friend unless he wants to
add specialised hardware or software to his VOIP set up.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Sun, 18 Sep 2016 16:51:26 +1000, Gordon Levi wrote:

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Thanks for the additional advice.

I've done some more research and if he is going to use VOIP, I'm sure it
would be Hangouts/GV which is free to call anyone in the USA, unlike
SkypeOut/SkypeIn, which isn't free (I don't think).

So, GV/Hangouts gives him:
- A free phone number
- Free USA calls
- Calls to or from any phone (including POTS)
- Free unlimited texts (I'm not sure about MMS)

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Sun, 18 Sep 2016 07:31:32 +0000 (UTC), Horace Algier

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Probably not an issue for 99% of people, but be aware that outgoing GV
calls silently drop after 180 minutes. I thought I'd use GV to dial into
some all-day presentations but found that I had to re-initiate the call
every 3 hours.


Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?

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voip provides a legitimate phone number.

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yep.


seriously??  

do you even know what voip *is* ?

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that number is already taken.

Re: Android GSM free telephone WITHOUT SIM card (is it possible on WiFi?
On Fri, 16 Sep 2016 14:40:08 -0400, nospam wrote:

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Either you don't understand the question, or you are just being cryptic for
no good reason.

I've seen this behavior from you so many times, that I've learned the
following:

5% of the time, you actually know what you're talking about.
5% of the time, you don't actually *understand* the question.
90% of the time you're just being duplicitous (for whatever pleasure it
gives you).

The point is that a real phone number is required for this to work.

I have Ooma and many of my friends and relatives have Vonage, but we're not
talking about physical phones - so - you must understand that physical VOIP
is not the question.

We're talking about using a GSM moboile phone WITHOUT the SIM card yet
still getting, for free, a real phone number that calls other phone numbers
and that receives calls from other phone numbers, for free.

Of course on WiFi, that GSM device (with or without a SIM card) can make
calls *to a computer* and it can receive calls *from a computer* but we
were never talking about *that* type of VOIP.


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I have *plenty* of VOIP device, e.g., I use Ooma all the time and I have
hangouts/gv on my iPads which can send and receive both calls and SMS for
free to and from POTS lines.

But I have a SIM card in *all* my mobile devices.
I'm asking if this can be done *without* a SIM card.
  
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Here's one of the times where you don't even understand the simplest of
questions. If you can't understand a 555-1212 foo-style example, then
you're *never* gonna understand the complexities of this question.

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