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htc in japan please help

hey there i have a situation my girlfriend is going to japan and she uses a htc vox (s720 i think), and i want to know if it is possible for her to use the phone in japan since her phone uses a simcard and she tells me that most phones there dont use sim cards. can any1 help with this? if so wich is a preferred service provider and all that thank you

Due to different technologies used, mobile phones from your home country, including GSM phones, are likely not to work in Japan. Instead, short time visitors to Japan can rent mobile phones or purchase prepaid phones through various companies, some of which have a counter at the airports.

i have a t-mobile sim G1 still keeps asking for a sim network unlock code

Hello i bought a G1 on E-bay and have a T-mobile sim card when i power on the phone boots and goes into a screen asking me for a :SIM network unlock pin.
Why should i enter such a pin as i am already using a t-mobile sim.
(phone is UK version i live in the Netherlands).
Any help would be appreciated

It's because you have Netherland T-Mobile SIM card.
It has different network id.
You have to unlock it first or use with UK T-Mobile SIM card.

Finish
Simply enough As long as your account has been in good standing for 3 months (you paid ur bill)
Call the customer service
ask for representative
then ask for your G1 Sim unlock pin
they will ask Why you need it (probably offer roaming plans)
simply explain you are leaving the country and would like to use your g1 with another (local) sim card. While you are gone. THEY SHOULD give it for free
if not a small fee attached to your account (15?!?)
((as for why it does it. Different region codes each country has its own))

Thanx for your reactions,the problem is now solved got the code of of E-bay.
Goingh through customer service t-mobile UK was gonna take to much time for me.
Case closed.

Simple Question: Why do you need to unlock a phone?

Hi guys,
Easy questions I hope:
I've never (yet) got into the area of unlocking phones and I would appreciate someone just answering a couple of questions to make sure I've got the general idea of unlocking.
1.
Am I right in thinking that you have to unlock a phone so that you can use a different provider's SIM card - instead of using one that is provided at purchase time?
e.g if I have an XDA supplied by O2, I could unlock the XDA and then use a SIM card from T Mobile?
2.
Do I need to unlock my phone EVERY time I put a SIM card from a different provider in it? Or once the phone is unlocked I do not need to do it again?
e.g. If I unlock my XDA, put in an O2 SIM card, and then go on a flight abroad, can I simply pull out the O2 card and pop in one from a local shop in a different country?
3.
Do I need to keep a record of anything before I unlock it?
e.g. Are any settings needed to be recorded BEFORE YOU START in order to unlock the phone ? Do I need to record information so that in the future I can put things back exactly as they originally were.
4.
Is there any differences between unlocking phones that have PAYG or CONTRACT cards? Are there any issues here?
Thanks for answers
Anne

In the USA a un-locked fone will bring more money used or new. and also has a wider seller/buyer market.
Once unlocked that's it. any sim anytime.
we have 5 fones between the two of us ( me and my better 1/2)
2 nokia's, a palm treo, a behold and a behold II (rooted 12/1/2009)
We have just our personal sim cards from T mobile (one each) we work weird, REALLY wierd hours. Some times our smart fones don't get charged or go dead while we are out. We just pop the sim cad into one that's got enough juice to get one of the "better" fones charged.
We both rely on our fones for our jobs.
A little know fact: in the USA it's a federal law. IF you bought your fone legitamatly. IE: not stolen. the carrier must provide you with the un-lock code in 24 hours.
The people that pay 15.00 or more to have a fone unlocked are either. Un-aware of that law. In a country where it's illegal to unlock a fone. Or knowingly have a stolen fone.
1: So yes you are right you need to un-lock the fone to use another provides fone with your sim.
2: You un-lock the fone once any sim card will work after that. AGAIN your right. (provided your in a country that has the same GSM 3g 4g network)
3: ALWAYS keep a written log of any "admin" #'s given to you for a fone.
the behold has a admin # that lets you turn on all kinds of things that are "off" out of the box. and you need that # everytime you make a adminastrative change. This maybe true with other fones as well.
4: I don't know about pay as you go. I would think once unlocked you would be able to use the fone pay as you go, so long as you had minutes on the sim installed.
I'm sure there are alot of people here that know alot more than me, and can help you further. I just got back into the cell fone game about a year ago and was out of it for about 10 years.
Things have really changed, then again they really haven't changed.
HTH
Later
Rich

One thing of note is that just because a GSM phone is unlocked, doesn't mean it'll work with every carrier, as carriers will sometimes use different baseband frequencies (there are four, 850, 900, 1800, 1900mHz I think) and some phones only support 2-3 our of 4.
I'm in Canada for example, where Rogers and Fido support GSM networks (phones that use SIM cards), Bell and Telus use CDMA (phones that have ESNs programmed into them). So if I buy a Sony Xperia X1 for example, I have to be sure to buy the American version, as Rogers only supports 850mHz, and the European version of the X1 will only support 900mHz. So even if I unlock the european version of the X1, I can't use it on Rogers in Canada.
I'm guessing you're from the UK, where the market is even more diversified. 3 Mobile for example, can only use phones that support 3G (or HSDPA). A good place to look for such specs, after finding out what frequencies your carrier supports, is GSM Arena.

Question for a Techy who knows o2 connection codes?

Hi there,
I have recently brought an xda serra, I brought the phone unlocked online because I wanted it on pay&go because it made more sense economicaly and thinking I could only use the pay&go internet on emergencys otherwise use it through wifi, cutting costs.
However I have put in an o2 pay&go sim which did not automaticaly configure the GPRS and wap conection codes. So the internet is not working on the phone.
I contacted Tech Support at o2 ; one guy was very helpful and we tried a few settings which I manualy put into the connections on the phone but they did not work.
Apparently o2 do not support the phone on pay &go only on contract.
I do not want a contract sim as it is costly and I cannot afford.
The chap from o2 tech support said it should be possible and we tried codes for other phones such as the nokia 58 100 pay&go, but they did not work.
He said google it to see what I get but no luck with that so I thought I would try this forum!!!
I am very grateful for any help or ideas!!!!
If u can help I am a true dummie, so a step by step detailed explanation is required. THanks!!!!!!

Serious problems with my mobile to travel to the US

Hello, I had an Oppo mobile and last year I wanted to travel to the US, and I looked on a web page at the coverage/frequencies that my mobile had in relation to US companies and it came out that it did not cover the frequencies of T Mobile, and others. And that's why I bought a new mobile, an Oppo A54S, but this year wanting to buy a T mobile prepaid Sim card so as not to have surprises when I arrive in the US, I entered the T Mobile website and when I had to enter my IMEI to to see if my mobile was compatible, they told me no. Now the fear I have is that if I even travel with a Sim card from a Spanish company with roaming in the US it won't work for me either, because they told me that without compatible VoLTE, I won't be able to make or receive calls with those devices on US networks. And I am desperate because I have put the IMEI of the 4 cell phones that we have at home that had coverage with the frequencies of the US operators, but when I put the IMEI of each one to see if they are co-compatible in T mobile, none is. Can anybody help me ? thank you

viajero1 said:
Hello, I had an Oppo mobile and last year I wanted to travel to the US, and I looked on a web page at the coverage/frequencies that my mobile had in relation to US companies and it came out that it did not cover the frequencies of T Mobile, and others. And that's why I bought a new mobile, an Oppo A54S, but this year wanting to buy a T mobile prepaid Sim card so as not to have surprises when I arrive in the US, I entered the T Mobile website and when I had to enter my IMEI to to see if my mobile was compatible, they told me no. Now the fear I have is that if I even travel with a Sim card from a Spanish company with roaming in the US it won't work for me either, because they told me that without compatible VoLTE, I won't be able to make or receive calls with those devices on US networks. And I am desperate because I have put the IMEI of the 4 cell phones that we have at home that had coverage with the frequencies of the US operators, but when I put the IMEI of each one to see if they are co-compatible in T mobile, none is. Can anybody help me ? thank you
Click to expand...
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Help with what specifically.

I have asked for help here because the T mobile community has put up your website, because what we do not understand is why none of the mobile phones we have tell us that the t mobile page is not compatible, and what we want to know is if The mere fact that the t mobila page says that our phones are not compatible to carry your sim, we wonder if we travel with phones with a Spanish sim card that has roaming in the US, it will work or not. thank you
Can someone help me please ?

viajero1 said:
I have asked for help here because the T mobile community has put up your website, because what we do not understand is why none of the mobile phones we have tell us that the t mobile page is not compatible, and what we want to know is if The mere fact that the t mobila page says that our phones are not compatible to carry your sim, we wonder if we travel with phones with a Spanish sim card that has roaming in the US, it will work or not. thank you
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Click to collapse
So you are asking why Spanish phones can’t use a American SIM?

Arealhooman said:
Entonces, ¿está preguntando por qué los teléfonos españoles no pueden usar una SIM estadounidense?
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No, I'm asking if my phone will work with my Spanish phone and a sim card bought in Spain that has roaming in the US, that's simply what I'm asking when T mobile tells me that my phone won't work in the US