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Cell phones: One cell phone - 2 numbers?

by shadowlab06 - 1/23/09 9:23 PM
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Post 1 of 34

One cell phone - 2 numbers?

by shadowlab06 - 1/23/09 9:23 PM

Is it possible or has anyone designed a way to have 1 cell phone with two separate numbers? I hate having to carry a work phone and a personal phone! thanks.

Post 2 of 34

May be coming

by ChuckT - 1/24/09 11:30 AM In reply to: One cell phone - 2 numbers? by shadowlab06

About a month ago (I think) I had seen some European GSM phone that had two SIM cards in it, which allowed your phone to have two numbers then (one per SIM card).

If it becomes available there, I would suppose that it will eventually make it to North America.

Now, if you are already in Europe, then you may have already seen it.

Post 3 of 34

thanks....

by shadowlab06 - 1/24/09 6:14 PM In reply to: May be coming by ChuckT

not in Europe! that would be cool to be able to do that!

Post 4 of 34

one cell phone two no.

by kumarvkb - 2/1/09 12:22 PM In reply to: May be coming by ChuckT

yes it is widely available in Europe and east like incia china japan and middle east except in north america i dont know why it is not available in north america it works with twi sim card and both are operational and you ans any one which is called in

Post 5 of 34

2 numbers may be possible in the U.S. on different networks

by WiredNot - 1/27/09 7:56 AM In reply to: One cell phone - 2 numbers? by shadowlab06

Greetings,

If I'm not mistaken many phones in the U.S. can have two different numbers now but each number must be on a different network. For example, my LG Voyager Titanium phone allows me to select between two different NAMs (NAM1 and NAM2). "NAM" is the Number Assignment Module and it contains your phone's registration for a network.

I don't know if my phone has two SIM cards or not.

Best regards, WiredNot

Post 6 of 34

NAM vs SIM

by ChuckT - 1/27/09 3:05 PM In reply to: 2 numbers may be possible in the U.S. on different networks by WiredNot

From a bit of searching, and this is not the absolute last word on this either, just from what I have searched for in the past 20 minutes, is:

That a phone that has multiple NAM setups, is not a GSM (SIM card based) phone. All that I was able to find was that if you have a NAM settings, than it is not a SIM card based phone.

The use of the NAM is basically what a SIM card does automatically for you. It identifies a phone (number and IMEI number, etc.) to the carrier.

That means that phones that are NAM setup, are CDMA phones (Verizon and Sprint, and a few others), whereas a GSM card phone is AT&T and T-Mobile, among others.

Yes there are other carriers, especially if you are not in the US, but I am not naming any of them. Tough.

From what I have searched and read through, it seems that you can, with a NAM setup phone, you either select one NAM or the other, but it does not seem that they automatically switch or utilize both at the same time. I could easily be wrong here, though.

Post 7 of 34

(NT) correct (n/t)

by Pepe7 - 1/28/09 9:34 AM In reply to: NAM vs SIM by ChuckT

Post 8 of 34

2 Sim cards

by Benzodiazepine - 1/28/09 8:39 PM In reply to: One cell phone - 2 numbers? by shadowlab06

This is strange for me.
In asian country, there are so many
cellphones that have 2-sim cards ability.

And they work flawlessly.

So it's kinda surprised when I visited there
and found out this cool technology.

Actually the thing is about how those countries
provide the cellphone signal.
Most of them sell mobile phones separately,
customers can buy their own sim cards from anywhere.
That's it. So they can change their cellphone anytime while maintaining the same sim card,
or change their numbers all the time without changing the phone.

Nice,huh ?

Just for your further research if you're interested.
I'm not sure which model but Nokia has couple of 2 Sim cards models.
Then this is another interesting no-name brand, WellcoM mobile.
Most of their cellphones are able to handle 2 sim cards.

Post 9 of 34

The US is behind

by ChuckT - 1/28/09 9:27 PM In reply to: 2 Sim cards by Benzodiazepine

The US is behind the rest of the world in much of the cell phone advances. I remember years ago that 60 Minutes (the TV show) was doing a story on the Netherlands (the land of Nokia) and cell phones, and they showed where many people were already using their cell phones for point-of-purchase devices. The Nokia phones (among others) had an infrared "beamer" on the top of the phone, and they just walk up to a machine (a soda machine was in the story, and one or two other coin-type machines too) and they just beam their phone at the machine and the soda would send out a soda (or whatever). The cell phone would charge back the price of the soda onto the person's cell phone bill. So, essentially the cell phone was a "wallet." Pretty cool. The Nokia cell phone that I had, at that time, had that infrared beamer, but it was not enabled.

Also a few years ago, a friend of mine had to go to the far-outback of Africa. There he was setting up a network for a worldwide electronics design, fabrication, assembly, and test company. He said the cell phone system, and even the land-line systems there, were years ahead of what he ever sees here in the US. And in so many other respects, the rest of the country, in that area, was a "3rd world."

One of the reasons is that here in the US we are saddled with old archaic systems, and the systems here are so embedded and needed that it just can't be thrown away. Whereas these new developing countries don't have anything old and useful. When it comes to technology they buy and install the latest and the greatest.

When it comes to Europe, well those people are willing to just "bite the bullet" usually, and just get on the new stuff bandwagon. They have few worries when it comes to obsoleting what is already in place. Of course, here in the US, we have laws about doing that. look at the years of preparation we needed to finally upgrade our TV system. Even now, that February 17 date in "switching off" the old NTSC over-the-air transmission is in jeopardy. Last I heard, that date is now being pushed off 4 more months!

Post 10 of 34

US behind

by shadowlab06 - 1/29/09 1:09 AM In reply to: The US is behind by ChuckT

you would think that one of the 'big' cell phone services would realize that we are behind and get into the game completely!

Post 11 of 34

Today's status of dual SIMs

by sauna6 - 1/31/09 7:08 AM In reply to: The US is behind by ChuckT

Most probably the operators, who in most markets are phone makers' main customers, will not offer dual SIM phones (in the U.S.).
Aftermarket adapters are abundantly available that let you use two SIMs in one phone. But since the phone only has one set of transceivers, only one SIM can be active at a time. Some adapters let you program the phone for automatic switching at certain times of the day.
Two or three phone models do exist, with dual transceivers (two phones in one box). But then you get into compromising battery life, size/weight, having to buy the phone my mail-order etc. The practical option is still two phones with different ring tones.
The other advantage to carry two lines, business and private, is the correct use of Premium SMS services, such as buying bus/tram tickets etc.

Post 12 of 34

Tip of the iceberg

by Pepe7 - 1/28/09 9:32 PM In reply to: 2 Sim cards by Benzodiazepine

It's not surprising at all that a better system is present outside the U.S. There is somewhat of a naive sense here that our way of doing things is the preferable way, regardless of how efficient of flexible the rest of the planet can do things on their own ;).

The only problem with those Nokia or Chinese off-brand 2 SIM card GSM phones is that they lack the necessary frequency bands for use in North America. And for the ones that lack the 850 band, it's not a good option for maximizing reception in many areas of North America, especially rural parts.

-Pedro

Post 13 of 34

interesting name...benzodiazepine

by jhcombs - 1/31/09 10:18 AM In reply to: 2 Sim cards by Benzodiazepine

I'm a pharmacist- your screen name is interesting. What's the connection?
www.jaredcombs.com

Post 14 of 34

Mr. Pharmacist

by Benzodiazepine - 2/3/09 10:17 PM In reply to: interesting name...benzodiazepine by jhcombs

Ha ha, I've been posting stuffs with this names for a long while.
You're the first one who noticed the name.

The connection is ... like your link said.
But not so serious, I started to take sleeping pills after taking
allergic pills for years and it didn't make me sleep anymore.

My nature doesn't go along with exercise, if you'd suggest me to.

Thanks for the link, really.

Post 15 of 34

One cell phone 2 numbers?

by CAPPNM - 1/29/09 1:41 PM In reply to: One cell phone - 2 numbers? by shadowlab06

Yes, Nextel is the only carrier so far that you can have two numbers on one device. But this is only good on their cell phones, not their blackberries. Again only Nextel, not Sprint. In fact they also do split billing. So your work number can be billed to the company and the personal line will be billed to you directly. But they share one voice mail box. You have to switch to line 1 or line 2. while you are on line 1 all the calls from line 2 go straight to voice mail and vice versa.

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