Can I use the G2 SIM in Other Phone? - Sprint LG G2

So I think this is a kind of unique question. I did some research and couldn't find a specific answer to my question.
First off, I'm new here but I've been lurking for years since I rooted my old HTC Evo 4G in 2012, and when I rooted my Samsung Intercept in '11 I think. I'm glad I finally joined, hope I can be of some help.
Okay, now to the question (in it's most basic form): can I take my Sprint Micro-SIM and put it in another carrier's cheap flip-phone?
Why I want to do this: I recently bought a kayak and capsized in it, ruining my Samsung (Google) Nexus S 4G. Luckily I had the G2 already on the way, expected for the next day.
Now I need a phone for when I'm out kayaking, and I don't want to risk my brand new G2. Ideally I would be able to just switch SIMs on the phones. This would be easy enough if I had a carrier who regularly used SIM cards. Sprint only has SIMs in their phones that support GSM and 4G. So that rules out getting a cheap flip-phone to swap SIMs with.
I know that as far as smart phones are concerned, it would have to be unlocked. Can I get a cheap flip-phone from another carrier that is unlocked? If so, would I be able to put my G2 SIM in it? i read something about how Sprint uses UUIC(?) SIMs that are paired to the phone's MEID, would that pose a problem?
Thanks so much in advance, hope this isn't too dumb of a question!

Short answer is no. Sprint phones require an MEID to authenticate on the network for voice and 3G (CDMA). The SIM or UICC portion is for LTE (4G) data only.
Looking on the Sprint website, they have some basic phones (even rugged ones) that will suit your outdoor type needs.

LordLugard said:
Short answer is no. Sprint phones require an MEID to authenticate on the network for voice and 3G (CDMA). The SIM or UICC portion is for LTE (4G) data only.
Looking on the Sprint website, they have some basic phones (even rugged ones) that will suit your outdoor type needs.
Click to expand...
Click to collapse
Okay thanks

Related

Possible to get Galaxy Nexus to work on Sprint?

I want to know if this is possible at all, does anyone know of any ways to put a verizon phone on sprints network? I think it has been done before, I will buy this phone if I can get 3g to work on sprint
Nope, VZW and Sprint operate at 2 different frequencies AND if you could somehow do it I don't think Sprint allows Third Party/Unlocked Phones.
actually they are teh same frequencies. how else would our roaming on verizon's network work?
shakuyi said:
actually they are teh same frequencies. how else would our roaming on verizon's network work?
Click to expand...
Click to collapse
Yea I actually think you are right because verizon and sprint share a tower here in Virginia. But sprint would never allow it.
Sent from my Galaxy Nexus using XDA App
I've been told different things by different reps at different Sprint locations. One guy in-store told me that it's "very possible" but that the customer has to do all the unlocking, etc. Another rep at one of their call centers reiterated the same. "If you unlock it, we can do it. Otherwise, there's nothing we can do."
So the question remains, how can we unlock it? I'd LOVE to stay with Sprint. Does anyone have expertise in this area? I've seen a few threads on this and they all seem to go unanswered...wondering if it's not a popular topic or if it's something we shouldn't be discussing?
Thanks!
Run around clockwise half naked below freezing while chanting "goosfrabah"...
Seriously no need to be posting such a thread. It's been posted and debated and talked about. Google and such should be your friend.
Either make googley eyes (and maybe much "more") at someone deep inside Sprint to add a VZW ESN to their database, NOT GOING TO HAPPEN, or murk in the underworlds of ESN cloning and modification, NOT HAPPENING HERE on XDA...
Posting from another thread.
No, the ESNs are in a computer database. If the rep enters an incorrect ESN or, in this case from their point of view invalid, the system will not move forward.
Even if that wasn't the case, I don't believe Verizon and Sprint operate on the same CDMA frequencies. Not to mention LTE. EVEN if that wasn't the case, the Galaxy Nexus pulls its subscriber information(like the phone number, data plan, etc) from its SIM card(just like GSM phones).
Sent from my Galaxy Nexus
http://phandroid.com/2011/12/20/spr...e-given-the-green-light-for-activation-rumor/
Possible, YES. Depends only on if sprint want to activate it or not. Phones generally support the entire spectrum and not just the subset that carrier uses.
For example on GSM, phones either support ALL of the 900 spectrum or none of it. The fact that the spectrum is split in two and used by different operators doesn't make a difference - thats just handled by the simlock/Activation of ESN.
It wouldn't make much sense for a hardware manufacturer to cripple a radio baseband to part of the spectrum if it can handle all of it, otherwise they would need to make new mainboards for each operator.
LTE is a different situation. As the spectrum is not split, and each operator use an entirely different spectrum. It would be more costly to add other spectrums on a Verizon device with no real benefit, if they have no plans to offer it on any other operator. Also it may be more cost or design effective to make two different boards if for example they can't fit an antenna that can handle both frequencies.
unremarked said:
Posting from another thread.
No, the ESNs are in a computer database. If the rep enters an incorrect ESN or, in this case from their point of view invalid, the system will not move forward.
Even if that wasn't the case, I don't believe Verizon and Sprint operate on the same CDMA frequencies. Not to mention LTE. EVEN if that wasn't the case, the Galaxy Nexus pulls its subscriber information(like the phone number, data plan, etc) from its SIM card(just like GSM phones).
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
VZW and Sprint operate on the same CDMA frequencies, 1x CDMA 2000 and 3G. How else do Sprint and VZW roam off each other for voice and data? When it comes to 4G, that's where they differ, LTE vs WiMax (for now). Even when Sprint goes LTE, they'll be running on a different LTE frequency than VZW and AT&T, so LTE roaming shouldn't be on anyone's radar for the foreseeable future.
And NO, the VZW GNex does not pull "its subscriber information (like the phone number, data plan, etc) from its SIM card(just like GSM phones)." Subscriber info is pulled from the ESN/MEID unique to any CDMA phone (VZW and Sprint included) to authenticate on the network. The SIM in VZW LTE phones is for LTE purposes ONLY, 4G data only and nothing else.
Why dont you get the galaxy s II? Wish I could get it for Verizon
LordLugard said:
VZW and Sprint operate on the same CDMA frequencies, 1x CDMA 2000 and 3G. How else do Sprint and VZW roam off each other for voice and data? When it comes to 4G, that's where they differ, LTE vs WiMax (for now). Even when Sprint goes LTE, they'll be running on a different LTE frequency than VZW and AT&T, so LTE roaming shouldn't be on anyone's radar for the foreseeable future.
And NO, the VZW GNex does not pull "its subscriber information (like the phone number, data plan, etc) from its SIM card(just like GSM phones)." Subscriber info is pulled from the ESN/MEID unique to any CDMA phone (VZW and Sprint included) to authenticate on the network. The SIM in VZW LTE phones is for LTE purposes ONLY, 4G data only and nothing else.
Click to expand...
Click to collapse
Thanks for the clarification on the frequencies thing. I wasnt 100% sure what Sprint operated on.
As for the SIM, I am 100% sure. Trade SIM cards with a friend, even to another microSIM device like a Samsung Stratosphere Restart your phone and then call eachother. The numbers will be swapped. Heck, even easier. Yank your SIM out and make a test call or check under the About Phone options.
EDIT: I know that Sprint uses CDMA(1x) and EVDO(3G). But what bands do they operate on? Just like AT&T and T-Mobile use GSM(aka edge) and HSPA(3G) but on different bands so not all their phones are entirely cross compatible.
EDIT2: Found my own answer. VZW operates on 850mhz, and 1900mhz. Sprint is 800mhz and 1900mhz. So you may in theory use a 3G Verizon phone on Sprints network with limited capability. I'd imagine it would be just like if you put an ATT iPhone on T-Mobile and be able to make calls but only get 2G.
Regardless of the frequencies you still have the ESN lockout as well as the SIM card issue.
Sent from my Galaxy Nexus
Sprint not going to activate the phone no matter what you do.
CDMA carriers have the last say so of what goes on their network and what does not. They chose what you use not you. They base the their phones off of the ESN/MEIDs if those do not match up to a "clean" one in their system then no go. Its their way of forcing contracts, "if you have to get a sprint phone may as well get the contract with it." they thing. GSM on the other hand you can do it because the identification of the carrier is on the SIM card rather then the phone. However, some carriers will "flash" a phone over like Criket or metro pcs (however they can brick the phone and then you can't even do anything with it.)
MetroPCS lets you bring in any CDMA phone and activate it on their network. I'm sure sprint could do the same if they wanted to.
tommyz2kool said:
MetroPCS lets you bring in any CDMA phone and activate it on their network. I'm sure sprint could do the same if they wanted to.
Click to expand...
Click to collapse
Emphasis on "IF THEY WANTED TO." If past behavior is indicative of the future then reason says they don't.
Lets assume Sprint suddenly changes its mind after years of hemorrhaging customers and move beyond that, as I've previously said the Galaxy Nexus(and all 4G LTE phones) behave more like GSM phones than CDMA and pull their subscriber information from the SIM card. Don't believe me? Try to use your VZW Galaxy Nexus without your SIM. Mine didn't work. Further my theortical point about the supported bands still stand. Who wants a Galaxy Nexus on 1X data?
Sent from my Galaxy Nexus
I thought that Sprint was going to offer the Gnex at some point. Was I just dreaming that? Does anyone know if Sprint is going to get the GN?
I could have sworn I heard that Sprint was getting it somewhere....
unremarked said:
Emphasis on "IF THEY WANTED TO." If past behavior is indicative of the future then reason says they don't.
Lets assume Sprint suddenly changes its mind after years of hemorrhaging customers and move beyond that, as I've previously said the Galaxy Nexus(and all 4G LTE phones) behave more like GSM phones than CDMA and pull their subscriber information from the SIM card. Don't believe me? Try to use your VZW Galaxy Nexus without your SIM. Mine didn't work. Further my theortical point about the supported bands still stand. Who wants a Galaxy Nexus on 1X data?
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
The reason your LTE VZW phone will not work without the SIM has nothing to do with pulling subscriber info but more to do with just authenticating with the LTE network, period.
Once again, your subscriber info is more hard coded to your ESN/MEID.
The LTE network could go down (like it has done now several times) and your phone will work fine with CDMA voice and 2G/3G. If the CDMA network goes down then you're screwed because all authentication starts there.
Sent from my SPH-D710
bradm23 said:
Why dont you get the galaxy s II? Wish I could get it for Verizon
Click to expand...
Click to collapse
That.
+1 char
LordLugard said:
The reason your LTE VZW phone will not work without the SIM has nothing to do with pulling subscriber info but more to do with just authenticating with the LTE network, period.
Once again, your subscriber info is more hard coded to your ESN/MEID.
The LTE network could go down (like it has done now several times) and your phone will work fine with CDMA voice and 2G/3G. If the CDMA network goes down then you're screwed because all authentication starts there.
Sent from my SPH-D710
Click to expand...
Click to collapse
I'd love to hear your explaination for the following behaviors. The only thing I changed was I took out my SIM card. You'll notice now even the time is wrong since the phones sync their time with the carrier.
EDIT: removed pictures because I'm paranoid/OCD about personal info.
You can post as many pics as you want. Your "subscriber info" is tied to your esn/meid in the system. Without those, whether you have an LTE sim or not on a CDMA network like VZW, your phone will not function. The LTE sim doesn't handle voice or any calling functions, just data.
When your phone connects to a cell tower (or the network), certain parameters are sent for a sort of handshake, which are your esn/meid.
I think you need to better familiarize yourself with the fact that VZW is a CDMA network first and foremost (and with all that entails, esn/meid/msid etc) with an LTE based data-only network (for now) built alongside it.
Sent from my SPH-D710

[Q] Getting a Verizon Galaxy Nexus to work on Sprint...

This has become a pet project of mine, but I've found little information available online or on these forums. Is this something that is possible? Some Sprint reps say yes, others say no. The one who do say yes also iterate that you'll need to unlock it yourself, while the ones that say no seem to be newbies or rulebook-followers...which leads me to believe that it IS indeed possible, but with some work on the user's end.
So, has anyone moved a Verizon Android phone over to Sprint? If so, could you give me (and the many others looking for this) a walkthrough of the steps or where to go to research further?
Thanks a lot.
Not going to happen. The esn for the phone has to be in their database to activate the phone.
The only esns in that database are the phones that they sell.
Sent from my Galaxy Nexus
johnbibbs said:
The only esns in that database are the phones that they sell.
Click to expand...
Click to collapse
Can this not be handled with a little social engineering?
DenzelChurchill said:
Can this not be handled with a little social engineering?
Click to expand...
Click to collapse
No, the ESNs are in a computer database. If the rep enters an incorrect ESN or, in this case from their point of view invalid, the system will not move forward.
Even if that wasn't the case, I don't believe Verizon and Sprint operate on the same CDMA frequencies. Not to mention LTE. EVEN if that wasn't the case, the Galaxy Nexus pulls its subscriber information(like the phone number, data plan, etc) from its SIM card(just like GSM phones).
Sent from my Galaxy Nexus
It is impossible at this point. The ESN isn't the roadblock. I'll quote a post made on Phandroid from someone who has much more knowledge on the topic.
"It is physically impossible to activate the Galaxy Nexus on Sprint. The Galaxy Nexus (along with all Verizon 4G LTE phones) provision CDMA using a UICC that has a CDMA SIM program embedded on it. AKA, a CDMA SIM card. There is nowhere to flash to make it work on Sprint!
Even if Sprint were willing to allow non-Sprint devices on their network (which they are not), you're still missing the CDMA SIM card that Sprint has to provide. They aren't making those available until Q4 2012 along with the LTE smartphones. And even then, do you want to try arguing with Verizon to get the Galaxy Nexus SIM unlocked? It just isn't going to happen... And let's not forget Sprint uses a non-standard implementation of CDMA, just like Verizon. They aren't fully compatible on certain aspects, like the messaging channels in 1X."
DenzelChurchill said:
Can this not be handled with a little social engineering?
Click to expand...
Click to collapse
MAYBE but probably not. You would have to know someone very high up at Sprint who is willing to risk their job for you.
Even then I'm not sure it's entirely possible because I think the 3G data services on this phone are authenticated through the LTE SIM card.
If that is not the case then you would have to figure out a way to program the Sprint PRL into your GN.
Bottom line I don't think it's possible.
Sent from my Galaxy Nexus
So this report is BS?
gottabemobile.com/2011/12/20/sprint-will-activate-verizon-galaxy-nexus-on-the-now-network
silow said:
It is impossible at this point. The ESN isn't the roadblock. I'll quote a post made on Phandroid from someone who has much more knowledge on the topic.
"It is physically impossible to activate the Galaxy Nexus on Sprint. The Galaxy Nexus (along with all Verizon 4G LTE phones) provision CDMA using a UICC that has a CDMA SIM program embedded on it. AKA, a CDMA SIM card. There is nowhere to flash to make it work on Sprint!
Even if Sprint were willing to allow non-Sprint devices on their network (which they are not), you're still missing the CDMA SIM card that Sprint has to provide. They aren't making those available until Q4 2012 along with the LTE smartphones. And even then, do you want to try arguing with Verizon to get the Galaxy Nexus SIM unlocked? It just isn't going to happen... And let's not forget Sprint uses a non-standard implementation of CDMA, just like Verizon. They aren't fully compatible on certain aspects, like the messaging channels in 1X."
Click to expand...
Click to collapse
Hate to refry an old topic, but this is not completely true. The RAZR, RAZR MAXX, Droid 4, and Bionic have been flashed to Cricket. This means there is a way to get it on Sprint. Legally... no. Just as legal as non Boost phones on Boost.
The Nexus uses a VIA chipset and not Qualcomm. Not many people have actually poked around on the device to see if there is anywhere to save the programming.

T Mobile USA/International One X owners in need of new SIM when...?

Hello all.
It appears we can expect the transition for 3g data on the 1900 MHz PCS band sometime between now and the end of the year as T Mobile is really looking to deploy LTE in 2013.
So, we (T Mo USA customers) all learned the hard way that we needed an older model micro SIM in order to get data on our phone.
Does anyone know if we will need a newer micro SIM (actually-the current micro SIM provided by T Mobile for the One S) to access the 3g data once it has been deployed?
What do you opine? Any insight would be great.
Thanks!
Shouldn't need to. Some places already have the 1900Mhz deployed as test beds and I haven't heard anything about needing a new sim.
All SIMs do nowadays is hold your subscriber number that gets relayed to a tower. That number is then looked up in a database to see if you meet requirements (e.g. are a paying customer, what services you have enabled, etc.).
I have an old SIM from 2007 that I am still using so I it doesn't work I'll let you know
I had no trouble going from a 2G to a 3G device with it if that helps you.
The only thing I'm worried about is if the 1900Mhz will be counted as roaming on AT&T and whether we'll have to pay extra for it.
I'm not getting data. I just got a sim card from tmobile today.
No data for me. Talked to tmobile and they said to talk to HTC.
What should i do?
Ask for an older SIM. The newer SIMs that Tmo has been using haven't worked on One Xs. Try seeing if they have any older miniSIMs and then you can cut it into a microSim.
jonshipman said:
Shouldn't need to. Some places already have the 1900Mhz deployed as test beds and I haven't heard anything about needing a new sim.
All SIMs do nowadays is hold your subscriber number that gets relayed to a tower. That number is then looked up in a database to see if you meet requirements (e.g. are a paying customer, what services you have enabled, etc.).
I have an old SIM from 2007 that I am still using so I it doesn't work I'll let you know
I had no trouble going from a 2G to a 3G device with it if that helps you.
The only thing I'm worried about is if the 1900Mhz will be counted as roaming on AT&T and whether we'll have to pay extra for it.
Click to expand...
Click to collapse
T Mobile has roaming agreements with AT&T, so I wouldn't worry about that. With regards to 3g on the 1900 MHz PCS band, it actually has nothing to do with roaming agreements via AT&T. T Mobile is actually reframing their network to allow HSPA and HSPA+ via 1900 spectrum opposed to its current structure which only supports 2g data on the same frequency.
According to T Mobile, they are refarming frequencies of their network to modernize their network; pushing 3g traffic to their 1900 MHz frequency allows them to deploy true LTE on their current 3g AWS bands (1700/2100).
My original concern was, how there is clearly an incompatibility with the newer micro SIMs and the international One X, will that incompatibility cause me to have to switch SIMs when 3g is moved over 1900? I'm not savvy enough to understand the issue between T Mo's current micro SIMs and the reasoning behind the incompatibility with the One X. I certainly don't want to miss out on faster HSPA speeds when it does take off in Boston so, I figured I would ask.
Do you have your One X set to GSM or GSM/WCDMA auto? I currently have mine set on the latter.
Thanks!
AndG404 said:
I'm not getting data. I just got a sim card from tmobile today.
No data for me. Talked to tmobile and they said to talk to HTC.
What should i do?
Click to expand...
Click to collapse
There is a thread in the General section discussing this.
You should call into a local store and say you need an older micro SIM, specifically ask for a non GBA micro SIM. If your local store does not have one in stock, the rep might be nice enough to email other local reps and call you back (as they did with me) when they receive a response. Hopefully, you wont strike out. If so, you would have to eBay or Amazon your older micro SIM.
I ended up driving about 10 miles from my office to pick one up as none of the T Mobile stores closest to me (6 of them) had them in stock. When I finally got one, I had never been happier getting Edge speeds in my life, lol.
Thanks, man!
:good::good::good:
batequeixo said:
:good::good::good:
Click to expand...
Click to collapse
No prob! Glad I could help
Status update...
I thought it would be courteous to update all reading this thread on my discoveries.
I've re-visited the T-Mobile store with a copy of the information found on this thread in hands, only to find that the guys working on that store are either unprepared or unwilling to help. They told me that T-Mobile only carries one type of micro sim across all their stores, they indicated they were not willing to do the legwork, very disappointing since I've been T-Mobile's customer for over 10 years.
Sounds like the alternative is to dig this special, older micro sim out of ebay or amazon, or move to another provider.
Any other alternatives?
That stinks!
Please know that I too struck out after calling 3 local stores (all within 3-5 miles). You probably got someone with less experience or perhaps you went during store peak hours. I recommend you call a branch (obviously not that one) and ask for a manager. Let the manager know that you are looking for a specific type of micro SIM, a non GBA kind. Let him or her know that you have struck via customer care and that he is your last resort as the T Mobile store closest to where you live no longer carry that SIM.
Out of all of T Mo stores that I called, only one person had no clue of what I was talking about but did get someone else on the phone for me. They all told me they no longer carried the older micro SIM.
Don't let this experience discourage you. If you want it for free, you have to call around.
Last resort would be eBay, etc.
Good luck bro!
Hey guys, im thinking of getting a One X for t-mobile and I want to know if all full size sims are non GBA. i already have a cut down full size sim so will that work in the One X on edge speeds?
Jelly: That's what I did when I first got my international HOX and it worked fine with EDGE. Please share if you start receiving 4G speeds....
Thanks,
Why dont you guys just wait till tmo announces their new htc one+?

*WIP* Making a Sprint galaxy S3 sim card compatible.. *update / installed*

The Goal is to let a L710 sim card compatible. (global capable)
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12/24
I installed a few verizon roms. I can change the network setting, but always get an error when i search for net works.
I only have 2 sim cards to test it out so I am not sure if there are bad sims. One is verizon LTE and onther is from an overseas gsm carrier tigo.
What more can I do with out bricking my phone?
I added some screen caps.
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12/6
I finally received the part from china. I installed it fairly easily. I did have to cut the back cover and pat of the metal plate from the reader.
Sd card works and reads fine. I only have have a verizon LTE and a tigo sim card to try it out So I am going to try flashing different roms soon, I am on Blazer. Nothing seems to happen when the verizon sim is inserted.
you are still be able to use sprint LTE, since the sprint sim is built into the main board and not the sd/sim reader.
Any have advise on how i can check if it know a sim card is inserted?
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I was searching ebay for parts and I found this.
http://www.ebay.com/itm/SIM-SD-Card...341?pt=LH_DefaultDomain_0&hash=item2575c1e915
It should be as easy as unplugging the old one and plugging in the new one. You would also need to get a verizon back plate. But this phone is super easy to open and change parts, minus the screen.
You will lose LTE, unless there is some way to get a sim from sprint (the Iphone 5 has one).
Does anyone know a res eon this will not work? I plan on ordering one later today.
Thanks
ranchosteve said:
The Goal is to let a L710 sim card compatible.
I was searching ebay for parts and I found this.
http://www.ebay.com/itm/SIM-SD-Card...341?pt=LH_DefaultDomain_0&hash=item2575c1e915
It should be as easy as unplugging the old one and plugging in the new one. You would also need to get a verizon back plate. But this phone is super easy to open and change parts, minus the screen.
You will lose LTE, unless there is some way to get a sim from sprint (the Iphone 5 has one).
Does anyone know a res eon this will not work? I plan on ordering one later today.
Thanks
Click to expand...
Click to collapse
This seems pretty ambitious! I can't wait to see what develops
Quick question... Why?
Sprint LTE uses a different frequency than every other major carrier. You're not going to pop in an AT&T (or any other) card and use their LTE, and you'd still be tied to Sprint CDMA unless I'm mistaken.
NeoMatrixJR said:
Quick question... Why?
Sprint LTE uses a different frequency than every other major carrier. You're not going to pop in an AT&T (or any other) card and use their LTE, and you'd still be tied to Sprint CDMA unless I'm mistaken.
Click to expand...
Click to collapse
I believe he stated his goal is to put a SIM slot in his s3. No where did he mention AT&T or using it for any other companies. He said he would need a Sprint SIM, and no others. He did say something about a Verizon backplate though
I believe you must have left the Matrix Neo, you're not on your toes
Edit: Oops, didn't see the "JR". You're still in training
Sent from my White Galaxy s3 by Sprint
What is the point? Most carriers that use SIM cards(if not all) use GSM radios. This phone has CDMA radios, so it wont pick up the signal.
shiftr182 said:
What is the point? Most carriers that use SIM cards(if not all) use GSM radios. This phone has CDMA radios, so it wont pick up the signal.
Click to expand...
Click to collapse
I can see it's pointless for most. But for those who travel and don't wanna pay sprint ridicules roaming rates, like me. It does have a cdma radio but the LTE part of the phone has gsm capabilities like the Verizon version.
It's more of proof of concept more than anything.
The Sprint SGSIII uses a RUIM that is hardwired to that board. A RUIM can do what a SIM can do as well as handle CDMA subscriber information. An early manual for the Sprint SGSIII showed instructions for SIM removal/installation, but it was changed before launch to be a non-removable component. Likely why the phone was delayed; they changed their minds on making it a fully-fledged World Phone in lieu of other models like the new Photon.
Sent from my SPH-L710 using xda premium
its next to impossible to get a sim card for the iphone5...
The S3 would have to have another Radio hardware installed to be what you are talking about as in Travel.
That's one of the Cool features on my line 2, Motorola Photon.....World Phones is what they are called.....Sim cards most useful purpose is to move data from one phone to another, contacts etc..
I spent hours researching this as well, not to try and enable GSM for global roaming, but to maybe, possibly get LTE from Cricket working. I looked at a few pictures of the main board from Ebay auctions, and while I think it's possible to do what the OP is proposing, our main board is not the same as other GS3s. I'm no expert, but the components that are under the microSD and cover plate aren't the same, even compared to a Verizon board. On top of that, the embedded SIM card is located on the skinny side that runs up the side of the phone, next to the battery.
I can't say with certainty, since I haven't scoured every single thread on the subject, but I haven't seen anyone provide the ability to bypass the embedded SIM. Well, maybe they did when they hacked the Photon. As far as the radio goes, it would seem that flashing new radio firmware might work to get the radio operating at the right frequency. Again, I make no real claims on this, as I'm no expert. LOL But from the info I can find, the radios are the same, at least on the dual core variants across the board, and are controlled by firmware. So, in the OP's idea, this would be less than ideal, unless someone could write a custom radio version that would retain CDMA voice and EVDO data for Sprint, as well as pointing the LTE/GSM side to the appropriate frequency.
Looking at Sprint's Galaxy Note 2, the embedded SIM looks to actually be on the metal cover that houses its microSD slot, so at least that part of the equation seems like it would be easier to accomplish with that phone.
For my part, I figured that even if Cricket would allow me to buy an LTE SIM and attach it to my ESN in their system, it would still be a major pain to try and overcome the embedded SIM hurdle.
In closing, I hope that no one interprets my ramblings as me being negative. When I saw the Photon hacked, I quickly realized that it was well beyond my comfort zone seeing as I don't have the funds to replace my phone when (Not if!) I destroyed it! I'm sure that it could be possible, especially given the talent of a lot of the members of XDA. I just wanted to put in my 2 cents, and point out that there is a lot more involved than just plugging in a new component and popping in a SIM card. Hopefully people here will rip apart my thoughts and prove me wrong, as I am very interested in trying to convert my phone to use Cricket's LTE.
Why not just get a Verizon gs3 ?
Sent from my SPH-L710 using xda premium
It works on the Photon? If I'm not mistaken that came with a dual freq radio I think.
Sent from my SPH-L710 using xda app-developers app
any updates?
why not just get a gsm gs3?
first post update.
illusionistpro said:
why not just get a gsm gs3?
Click to expand...
Click to collapse
have you SEEN what S3's sell for ? yeah that's why hehehe
Jesus Christ fix the title of this thread already.
Sent from my SPH-L710 using XDA Premium HD app
how about a verizon gs3 port
would you think a verizon gs3 port to sprint gs3 will work being that phone is a world phone? i think it is..
a Sim toolkit is included in /system/app/
All you need i a launcher or an app that lets you create shortcuts to Activities, and you can then point it to the Sim Toolkit.
O I c...
Sent from my SPH-L710 using xda premium

[Q] Note 2 from Sprint to Verizon, basic questions

I got a galaxy note 2 with Sprint on it, and plan to switch over to Verizon wireless (I use one of those 3rd party companies that use Verizon lines) and I heard they don't like unlocked phones. I have a few basic questions, please note my phone doesn't have a SIM card. I like Sprint, but their coverage is more city based, and the problem there is I don't live in a city, and big red has got us covered under 4G LTE.
Will I be able to pick up a Verizon LTE service, I remember there was some sort of error with my older S3 and it roamed on a Verizon 4G network, i'd assume my Sprint note 2 can do the same, and is capable of picking up that signal.
Also, will the company be able to know I have an unlocked phone? Or will it assign me a new MEID with Verizon when I select that option, (Yes I know how to unlock, real simple process) And when I go to type in the MEID/ESN for activation, will it recognize it is on an unlocked phone, if so how do I fix that without doing anything illegal (Like changing the MEID, which is very complex, and illegal)
And will I be able to keep my current MEID I have on Sprint, if I select Sprint under the network options.
If you are confused on my wording, i'll be glad to help you out. Also if you know anything about the HTC One M7, will I be able to switch that over too, and would I also need a Verizon SIM.
Thanks for the help, I am not an expert so try not to be too complex, I also perfer to avoid CDMA tool if possible, I dread that software at times.
If there's also a way if 4G won't work to trick it into thinking I have a 3G only devise under Verizon that would be cool too. I don't expect this to even be possible without a dreadful process.
Bump, not sure if you are supposed to do this.

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