i wanna buy a Samsung S4 to use in China. I wanna know the differences between unlocked phone and open phone.
472657
Hello! I don't know what you mean with "open phone", a unlocked phone is a phone that can work with any company in every place of the world. A phone purchased in a AT&T; store only works with AT&T; mobile system and within USA (that is a locked phone). I bought a Samsung S4 unlocked (international version) and I'm using it in Venezuela.. so I highly recommend you to buy a unlocked phone. It should works perfectly in China.
472658
I have never heard of the term "open phone", so I'm not sure. Unlocked phone means you can buy a SIM card for it anywhere in the world and use it, there isn't a contract to go with the phone.
472659
An unlocked phone is a phone that can work with any company in every part of the world including China. You can purchase any company's SIM card for an unlocked phone. An open phone is restricted to a specific country and to a specific company. And most open phones do not use SIM cards.
472660
Actually i have never heard of an "open phone" but i am almost sure that you can use an unlocked phone in any part of the world
472661
An unlocked phone is for the world band's but an open phone is only in your country
1644016
The one I bought was unlocked. I don't know about the one you're considering.
251655
The phone is unlocked. The version I got is only good in the Americas (North America, Central, and South). It is not recommended for other countries.
414014
The S3 I747 model is an international version of the phone sold in the US. I have used it in Afghanistan, and in Ukraine without a problem. Additional information about the S3 and all the different models can be found at http://en.wikipedia.org/wiki/Samsung_Galaxy_S_III. Please read about the different versions there. You are on the right track with the I747.Be aware that some versions of the S3 are not 4g LTE. The I747 is, but the standard "international" model I9300 is not. I bought the AT&T; branded phone, in unlocked condition. It is contract free, and not locked to a US carrier. It will work with any GSM micro sim card. The S3 I747 model is an international version of the phone sold in the US. I have used it in Afghanistan, and in Ukraine without a problem. Additional information about the S3 and all the different models can be found at http://en.wikipedia.org/wiki/Samsung_Galaxy_S_III. Please read about the different versions there. You are on the right track with the I747.Be aware that some versions of the S3 are not 4g LTE. The I747 is, but the standard "international" model I9300 is not. I bought the AT&T; branded phone, in unlocked condition. It is contract free, and not... » Read More The S3 I747 model is an international version of the phone sold in the US. I have used it in Afghanistan, and in Ukraine without a problem. Additional information about the S3 and all the different models can be found at http://en.wikipedia.org/wiki/Samsung_Galaxy_S_III. Please read about the different versions there. You are on the right track with the I747.Be aware that some versions of the S3 are not 4g LTE. The I747 is, but the standard "international" model I9300 is not. I bought the AT&T; branded phone, in unlocked condition. It is contract free, and not locked to a US carrier. It will work with any GSM micro sim card. « Show Less
149243
Unlocked means it can work with any network,,and also in any country.It is not tied to any carrier.
869706
I urge you to not buy this phone. Samsung has the best in the market right now. If you are looking for something more affordable, may I recomend the Nokia Nexus or Lumina. HTC has a bad history of inferior merchandise and they tend to not back their products when they malfunction. If you are still thinking of buying this phone and to answer your question, I am not sure what you are asking. Are you asking if the phone is unlocked or locked with AT&T;? You would have to call them and ask. Each network supplier carries/supports different phones and models for each of their networks.
1684654
This phone is unlocked. I use in in Western Eurasia. I've plugged in a local SIM card and the phone is fully funtional with no issues.
522656
Please communicate with the vendor selling the product regarding whether the unit is truly unlocked and can be used as a SIM free Open device on any GSM platform.Price is typically low since it is an end of Life device from Samsung. Make sure the 3g Bands are compatible in the Country you are trying to use.
819794
Hello The one I am personally selling is unlocked meaning the phone works with any GSM SIM cards worldwide. The one I sell works anywhere in the world Thank you I_SeLL
2034985
Hey there, it is a phone from an Chinese carrier called unicom. It works internationally since its factory unlocked. You can google the model number, as there are many blogs dedicated to this phone and using it stateside.
1500398
yes ,any place just put their sim in.This is the only real s4 the others are chinese knock off's
1248710
Don't buy unlocked phones. They have different firmware. This phone can not be changed to run on 4G! I had to trade in for 130 and pay additional 270 to get the same phone with TMobile they let me trade in the phone even tho they can't use it. I got lucky. Now I am getting my 4g service. Unmarked phones are international based on their capabilities. While Sprint. Verizon.e.g. has their firmware installed. I had to do this with both phones. Yep 1300 bucks plus another 800 bucks to get another one!!I threw away 1040. In the trash and I am a pensioner widow.
380590
It is unlock phone so I should work with any carrier. In US, I tried both ATT and Tmobile are ok. I carried it with me on China trip and it work with Chinese phone number as well.
633626
If you don't like to have the logo on your phone then you should get unlocked - International version, that one doesn't have logo on it.
479892
The difference is that you can use a locked phone with a specific phone company (for example from USA or South Africa) and you can use it out your country only if you have a roaming plan with your phone company.On the other hand, you can use an unlocked phone in any country you travel. You only need to get a company which is compatible with your phone model. So, if you travel a lot it is better to get an unlocked phone; if not it is better a phone with a plan in your country.
968793
All Galaxy S4 are the same across providers. The only ones that are different are the Galaxy Active or other spin-off Galaxy phones.
2024581
This phone is unlocked. It has all the frequencies. It should work in China without any problem for voice. As far as Chinese language, you probably need to download it from Samsung. It does not come with it . I believe this phone was originally designed for the India market. I like the dual sims feature.