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Galaxy S4 - World Phone

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Journeyman

Re: Galaxy S4 - World Phone

This is very important. Can I buy a Samsung Galaxy s4 from sprint in full for 600 off of contract and take it overseas the next day and use it on a gsm network of my choosing with a sim card I choose? I read I have to wait a certain period to unlock my phone. I want to buy it unlocked.

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Journeyman

Re: Galaxy S4 - World Phone

I don't really know "AndroidLover1"... Waiting on "6970buggypilot/ Rod" to reply since he works back and forth near the boarder into Mexico I think. ANY UPDATES TO MY QUESTIONS ABOVE 6970buggypilot ???

Thanks!

Journeyman

Re: Galaxy S4 - World Phone

According to the Sprint rep at CES (on video) he claimed they were going back to the way things were when asked about the embedded sims fiasco. If that is the case, then the phone should be unlocked for overseas use from the get go. Only the iphone needed to be unlocked before overseas use previously. Your best bet though is to call Sprint International and ask them. They would be able to tell you better than any rep who doesn't do international, as it's easy to get multiple answers to the same question.

The removable SIM is the only reason I am holding on to my Photon as I don't want to butcher my Note 2 to do the SIM card mod. Personally I'd rather see an S3 Slider world phone, but I know I'm dreaming on that one.

edit: According to people on XDA, the S4 is initially locked so you'll have to give a call to International and have it unlocked.

Journeyman

Re: Galaxy S4 - World Phone

FYI there are two (2) ROMS  (Oficial Sprint ROMS) in the SGS4's out there, the U.S. and the USA.  That's for starters.  Also get your MSL code to set your proxy to null.

I purchased my phone outright from Sprint and provisioned it myself.  (I never pay activation fees)  You can have Sprint International provision the GSM SIM card from Sprint and it'll work, also with any SIM outside of AT&T and T-Mo areas.

What I do is manually switch between CDMA and GSM because of signal bleed into Mexico.  Like I said you need to fully provision the phone before use on CDMA first and then on the GSM side.  The SIM card you use is up to you.

I could use CDMA in Cd. Juarez but the costs are prohibitive when roaming.

That's how the GS4 does it in a border town!  Say goodbye to my HTC TP2. 

-Rod

Journeyman

Re: Galaxy S4 - World Phone

So what you said to do in order to use a different sim in another country is to have SPRINT provision the current sprint sim card for international roaming and calls in other country. Then after sprint provision it put in the local sim card of that country and switch it over to GSM while in that country? And that will work?

"Like I said you need to fully provision the phone before use on CDMA first and then on the GSM side.  The SIM card you use is up to you."

Journeyman

Re: Galaxy S4 - World Phone


Cuong1Lilah wrote:



So what you said to do in order to use a different sim in another country is to have SPRINT provision the current sprint sim card for international roaming and calls in other country. Then after sprint provision it put in the local sim card of that country and switch it over to GSM while in that country? And that will work?


I think he means to have Sprint provision it first locally (ie...CDMA), then call up International and have them provision it for GSM use. Then when you go overseas, you'll be good to go for whatever SIM you choose.

Journeyman

Re: Galaxy S4 - World Phone

Sprint provision it first locally = mean just to have it activate for regular use correct?

Provision it for GSM use = means call international to have them activate it where I can use my local USA number in another country?

Then I should be able to use a different sim card?

Journeyman

Re: Galaxy S4 - World Phone

I'm a bit confused.

I had a call with Sprint Intl service and they unlocked (at least they said they did) by SG4.

They asked be to factory reset it, ok, done that.

But when I insert non-US SIM card (while in US) in to it it says "Invalid SIM".

Is this going to be different when outside the US, can some one confirm this inside/outside US behavior? 

I have doubts since Sprint iPhone that was also unlocked accepts non-US SIM card while in US, even finds ATT or TMO for service.

Journeyman

Re: Galaxy S4 - World Phone

Sprint's SIM is a GSM/UICC card that supports LTE in the U.S. and GSM services out of country.  Take it out and replace it with a GSM SIM say from Orange and you are in the U.S. the radios see T-Mo and at&t so it's an "Invalid" configuration.

iPhone (Apple) is another animal in how the radio reports its status. Two different OS's.  The behavior is the same as above.

I use my SGS4 daily wih a Movistar SIM and have had no issues in Mexico or Costa Rica to date.

I just can't wait for the Otterbox waterproof case like for the SGS3!

-Rod

Journeyman

Re: Galaxy S4 - World Phone

Hi Rod,

A bunch of us on XDA have success getting the phone approved for an unlock but we have no way to truly verify the unlock.

I am able to get the UICC UNLOCK menu item to push through the PRL update, but whenever I insert a foreign sim, it gives me INVALID SIM.

I have talked to sprint international about this and they claim that the INVALID SIM is only because the phone sees US carriers' signals. Once I am abroad, the phone will no longer display INVALID SIM.

So my question to you is: do you see INVALID SIM when you pop in your Mexico or Costa Rica sim card inside the US?


It would greatly clarify things for us. Thanks in advance.

Journeyman

Re: Galaxy S4 - World Phone

Yes, and Sprint international is correct.  FYI, there's more than one retail ROM with this release from Sprint. Does this matter I don't know.  My HTC TP2 was running Windoze OS and had a full size  SIM card and did not have the invalid message issue, it's an antiquated device now. Sprint international will decouple the UICC (from the device not the network) so that you can leave the non-Sprint SIM card in the phone and use CDMA but you will not be able to use LTE services until you put the Sprint UICC/SIM back in.

One way to validate I guess your provisioning is to have the foreign SIM in the phone and try and use CDMA services.  I have no LTE in my area here.  Good luck.

-Rod

Journeyman

Re: Galaxy S4 - World Phone

Pretty ridiculous.  Horrible customer service.  I just spent the past hour on the phone with Sprint international with no luck.  I'm leaving to Asia in two weeks and they refused to sim unlock the phone since it's less than 90 days to protect themselves from "fraudulent" behavior.  I really love how they kept me on the line and on hold just to give me a "No, cant be done." I've been a customer for >10 years, but after this experience, I'm probably going to return the phone and leave Sprint. 

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