I have a question... when I go overseas w\ my old Infuse, I always had to flash a non-AT&T radio to truly "unlock" the device. The radio ATT had on the firmware made it so you can ONLY roam on the partners AT&T wanted you to be able to, even if you had a SIM from say Thailand.
For example, if I go to Thailand, there are about 5 GSM carriers. AT&T partners with 1 of them. If I put in a SIM from the UK who partners with 4 of them, the ONLY carrier the radio will let me latch onto is the ONE overlapping carrier that AT&T also partners with. Flashing a non-ATT radio resolves the issue, but it's quite frustrating to have had to deal with on the ATT Infuse, so I always used the Rogers radio, which didn't have the limitation.
I assume that's going to be the case with the AT&T SGSII that I just bought as well. Does anyone have any radio suggestions? And since we don't yet have ROM Manager, am I going to have to flash with my PC or what?
Thanks as always!
bella92108 said:
I have a question... when I go overseas w\ my old Infuse, I always had to flash a non-AT&T radio to truly "unlock" the device. The radio ATT had on the firmware made it so you can ONLY roam on the partners AT&T wanted you to be able to, even if you had a SIM from say Thailand.
For example, if I go to Thailand, there are about 5 GSM carriers. AT&T partners with 1 of them. If I put in a SIM from the UK who partners with 4 of them, the ONLY carrier the radio will let me latch onto is the ONE overlapping carrier that AT&T also partners with. Flashing a non-ATT radio resolves the issue, but it's quite frustrating to have had to deal with on the ATT Infuse, so I always used the Rogers radio, which didn't have the limitation.
I assume that's going to be the case with the AT&T SGSII that I just bought as well. Does anyone have any radio suggestions? And since we don't yet have ROM Manager, am I going to have to flash with my PC or what?
Thanks as always!
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Interesting - I've never seen any indication that Rogers radios in the Infuse had this positive effect. Especially since the Indian users on the Infuse forums had no problems with any Indian carrier that had frequency bands the Infuse supported. Of course, maybe that's because they always used a local-carrier SIM, and not something a little wacky like a UK sim in Thailand with a US phone...
I9100 radios will not work on the I777.
Entropy512 said:
Interesting - I've never seen any indication that Rogers radios in the Infuse had this positive effect. Especially since the Indian users on the Infuse forums had no problems with any Indian carrier that had frequency bands the Infuse supported. Of course, maybe that's because they always used a local-carrier SIM, and not something a little wacky like a UK sim in Thailand with a US phone...
I9100 radios will not work on the I777.
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HEHE, yeah. AT&T has several roaming partners in India, so odds are they'd be able to use it just fine with any SIM even if a non-Indian SIM.
UK sims are not as uncommon as you think. MOST global travel sims are registered in the UK or Eastern Europe. Mine is a Tru SIM. Tru is from the UK (you may have heard of their VOIP service, TruPhone). The SIM has a US number, it's just UK-based, since their carriers are far ahead of the US in terms of EU roaming, so it gives the most beneficial rates of any SIM.
It's really the most noticeable in countries where AT&T only has 1 or 2 roaming partners, but the country has 4-5 GSM carriers. Most southeast asian countries like Philippines, Thailand, Malaysia, Singapore fall into this category, so it can be a bit annoying be limited by my phone. Even in Japan last month I had issues because the roaming carrier Tru will allow (almost any) didn't jive with what AT&T's radio wanted to attach to (it had weak signal). Flashing the rogers radio solved, but hopefully there will be radio updates out for GSII.
EDIT: it's likely that it's not less of a restriction, but just a better roaming relationship with more countries. Canadian Carriers are a bit more "traveled" and progressive than Ma Bell. AT&T loves to advertise that you can use your phone in many countries, but they don't say that in many countries the one and only provider they roam on has TERRIBLE coverage or only a tiny part of the country covered and just gives them a good deal to boost their roaming count.
BTW, good to see you again Entropy! I missed you the couple weeks I had Infuse while you were away, hehe. Glad to be back w\ a phone you have so I can enjoy the great things you put out!
I could be wrong, but i thought it was the SIM card that told the phone what towers were roaming and not roaming. The only way an AT&T phone would keep you from going on another providers towers in another country is if you were still using your AT&T SIM card, or if your phone simply didn't work on the band of the carrier you were trying to use.
benk016 said:
I could be wrong, but i thought it was the SIM card that told the phone what towers were roaming and not roaming. The only way an AT&T phone would keep you from going on another providers towers in another country is if you were still using your AT&T SIM card, or if your phone simply didn't work on the band of the carrier you were trying to use.
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Well a SIM is just like an ID, and the carriers will either let you register with that ID, or not let you register. However, AT&T in all of their glory modified the radio so when you go to a country, the radio will disallow access to a carrier. I am not quite sure how they do it. For example, if you go to Thailand w\ an ATT sim card you'll likely roam on DTAC or AIS. You can't roam on Tru w\ an AT&T sim card because they don't have a roaming agreement, but the phone fully works fine if you put a Tru sim into it. Where the radio also limits you somehow, is if you have a SIM from say O2 in the UK, and you pop it into an unlocked Infuse 4G, you can't roam onto Tru, even though Tru is a roaming partner of O2, and the phone fully supports the frequencies and everything works just fine.
Weird right? Now flash the Rogers radio. Since Rogers has Tru as a roaming partner, it works if you put in a Rogers SIM, Tru SIM, O2, etc.... that's where the mystery and misery lie. I'm really hoping they didn't do the same to the SGSII's radio.
Related
So i got a tmobile Samsung Galaxy s Vibrant right. and i live up in canada the phone is unlocked and everything but i cant connect to 3G data... i keep hearing thins around the web of people saying tmobile has Blocked the frequency of 3G Data in canada. is that possible? or just a rumor? cause i would just LOVE to use this phone to its potentional not just talk and text....
Only Wind and Mobilicity are gonna work. I'm from Toronto though don't know what else is available Canada wide. All others you are gonna need either the i9000 or the captivate for bell and rogers
3g worked up in canada with a rogers network SIM for me. That was about a month ago. I'm going up Thursday will let you know. Typically I travel to Vancouver weekly and swap my tmobile sim for a rogers.
Well i have a rogers sim car with an unlocked Tmobile vibrant. so i dont get it... it works for some but not for others?
Still works for me. In Richmond BC right now on rogers sim speedtest results 3617up 478dn
I recently took my phone to the UK, and it seems to get no signal at all. When I do the *#*#4636#*#* service menu, it only states that it has usa bands (my captivate and nexus one had multiple bands to choose from). Does anyone know of a workaround to get this phone working overseas?
Called AT&T and they were no help in getting the phone connected.
changw414 said:
I recently took my phone to the UK, and it seems to get no signal at all. When I do the *#*#4636#*#* service menu, it only states that it has usa bands (my captivate and nexus one had multiple bands to choose from). Does anyone know of a workaround to get this phone working overseas?
Called AT&T and they were no help in getting the phone connected.
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AT&T does that **** on purpose because they want you to pay for their international plan...if you talk to them about it, they'll tell you that you need to sign up for a plan that will let you go out of the US with signal.. (it's not permanent, but you pay for the month that you are gone).
Problem is I already have the international roaming plan.
If you're trying to use a foreign simcard it wont work unless you have a sim unlock code.
Otherwise there is no reason it shouldnt work overseas on your ATT sim card if you have the right plan. it has the correct 3g bands to work anywhere in UK/EU on 3g.
It could be that its not pulling down the right APN settings for orange or whatever provider its trying to roam on. Just a thought.
Just out of curiosity where in the UK were you? I was there in Dec with my AT&T Blackberry (worked fine) and will be there in June with my BB and my Atrix (didn't have a personal international phone when I was there in Dec as I had been on Sprint at the time). In the past I've had no problems - taken past AT&T phones to Germany, France, Spain, Scotland, Slovenia and Italy and they've always worked (that was with my old HTC Fuze which I had totally unlocked). The only place I ever had a problem was rural Wyoming about 100 miles west of Sturgis two summers ago. It wouldn't work but for one corner of the driveway at the cabin we were staying at.
I have been in London. I actually brought my samsung captivate, and put my at&t sim card, and everything worked just fine. If I place my sim card back in the atrix it looks as if it does not detect the signal at all.
changw414 said:
I recently took my phone to the UK, and it seems to get no signal at all. When I do the *#*#4636#*#* service menu, it only states that it has usa bands (my captivate and nexus one had multiple bands to choose from). Does anyone know of a workaround to get this phone working overseas?
Called AT&T and they were no help in getting the phone connected.
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Hi. I know where you can work that phone overseas. Kindly contact me.
Looking at pictures of the Rezound, it looked as if it has sim card support, is there any known way to root/unlock the phone to use on T-mobile/AT&T?? if so i need one...
no the sim card is for LTE only. Sorry! It doesn't have GSM or HSPA support. Only CDMA EvDo 1xRTT and LTE
Ah bummer. Well ill definently have to consider virizon instead of tmobile when i get my own contract
Sent from my SGH-T959V using XDA App
Excuse my ignorance, but just trying to sort this out. Realise it uses an LTE sim card, but as I live in China was hoping to put in a china telecom sim card and use it on their CDMA2000 network (which it does support).
This possible? Thanks in advance.
The sim card is solely for LTE if that helps. It may be possible to flash it to their network but I cannot answer a yes or no
It depends on the spectrum your LTE network uses. The phone should function CDMA only if you or your carrier know how to flash it correctly. Verizon uses a special LTE spectrum range they bought from the FCC known as C-Class if I remember correctly. It was sold after the US went from Analog to Digital TV. There were A-E Class Spectrum and C apparently was the best for whatever reason. I don't know to say anyone on here would know any more info than that in regards to the frequencies.
Thanks, I don't know how to flash it and I assume my carrier probably doesn't know how to or want to either. Shame. Really wanted this phone. It is being sold on taobao here (Chinese ebay equivalent) so maybe a solution will be found in the future.
There is a program called CDMA Workshop that most places in the US use to flash CDMA phones from major carriers to pre-paid carriers. I am sure someone over there could do the same. I lived in South Korea for 2 years, the stuff they could do was ridiculous, and I know China is the same. Actually, my neighbor is from China and is pretty tech Savvy too. I will text him later as he was just in China a couple weeks ago.
He said his girlfriend was able to bring her iPhone from China and have it flashed. Should work the other way around. As far as LTE though, beyond me.
Long story short..... Due to some crazy crap my company has decided to pull I may be moving to Costa Rica for a year or traveling back and forth multiple times a year.
I am going to want to keep my US phone number and cell phone plan and also get a phone number on a plan with the local carrier Kolbi in Costa Rica. I currently have Verizon and their international plans are awful and ridiculously expensive. Only US carrier with free international roaming is T-Mobile.
I want to buy a dual sim phone but it seems like there are no options since I am currently with Verizon. Best case is I would like to keep Verizon due to good service in the US and find a dual sim phone that supports them... Worst case is I get a dual sim phone and switch to a US carrier that it will work with most likely TMobile.
So main questions...
Any good dual sim phones that are compatible with Verizon?
If no to above what phone and carrier should I switch to?
Please use this existing thread:
http://forum.xda-developers.com/showthread.php?t=1620179
Thread closed.
I have been reading a lot of different things about doing this with no definitive answer. It looks like, as of recently, it should be as simple as popping in the sprint Sim card and it should work but I want to be sure before hand. Are there any downsides at all about using tmobile Note 8 on Sprint?
Hi there, I'm not sure but Sprint SIM cards are lock. You can try and see, I had Sprint before and try using there SIM card in my unlock tmobile Galaxy S7 Edge running the unlock S7 Edge firmware, it keep reconfiguring over and over. Maybe you might get better than me.
cmdauria said:
I have been reading a lot of different things about doing this with no definitive answer. It looks like, as of recently, it should be as simple as popping in the sprint Sim card and it should work but I want to be sure before hand. Are there any downsides at all about using tmobile Note 8 on Sprint?
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Click to collapse
Sprint doesn't allow other carriers phones on their network. Unlocked or not. T-Mobile does though...
https://forum.xda-developers.com/galaxy-note-8/help/cdma-unlock-verizon-note-8-sprint-t3732364
First question would be: Does Sprint allow to use their SIM cards within non-Sprint devices? That I can't answer. Because I never used Sprint services.
The second question is: Would the T-Mobile radios work with Sprint? LTE radios would most likely work if Sprint allows you to use their SIM card with that device. When LTE is weak or not available the answer is: No. The active radios within T-Mobile and even AT&T Samsung Galaxy Note 8 are both LTE and GSM (Both 3G and 4G). Both Sprint and Verizon uses LTE and CDMA (each has their own CDMA) radios. You can't use GSM radios with Sprint and Verizon right now. Though that will end up changing as CDMA gets phased out.
To top things off each GSM carrier maybe using different frequencies with some (but not all) of their GSM radios. So changing a cellular device from a GSM carrier to another GSM carrier may have limits with GSM services.
Sprint and Verizon services have problems with international areas (outside of the USA) where LTE is weak or no LTE. The reason is that CDMA is very limit or doesn't exist in most international areas (outside of the USA). The areas that CDMA still works internationally (outside of the USA) will be phased out (mostly in the near future). Only a few places outside of the USA, like China, would CDMA not be phased out so quickly. But CDMA will end up completing phased out all together sometime in future (including in the US).
If you want to be truly Global then go for carriers that have both GSM and LTE, like T-Mobile, AT&T, etc. Then once you unlock the SIM then you can use your carrier's roaming (which don't need SIM unlock) or switch the SIM card with a carrier in that country to get service internationally. Just a side note: T-Mobile does have Unlimited 3G international roaming without any extra cost (this is subject to the type of plan you have with T-Mobile).
The only way this would work for you is if the CDMA radio is built into all Note 8 devices. If so then you just need to flash the correct radio firmware to active the correct carrier radios. But I don't believe this is the case. And this wouldn't solve the Sprint SIM lock issue.
The short answer is no. Read this thread. I thought you could just pop in an activated SIM, but it's not that simple.
https://forum.xda-developers.com/galaxy-note-8/help/cdma-unlock-verizon-note-8-sprint-t3732364
JaguarXT said:
First question would be: Does Sprint allow to use their SIM cards within non-Sprint devices? That I can't answer. Because I never used Sprint services.
The second question is: Would the T-Mobile radios work with Sprint? LTE radios would most likely work if Sprint allows you to use their SIM card with that device. When LTE is weak or not available the answer is: No. The active radios within T-Mobile and even AT&T Samsung Galaxy Note 8 are both LTE and GSM (Both 3G and 4G). Both Sprint and Verizon uses LTE and CDMA (each has their own CDMA) radios. You can't use GSM radios with Sprint and Verizon right now. Though that will end up changing as CDMA gets phased out.
To top things off each GSM carrier maybe using different frequencies with some (but not all) of their GSM radios. So changing a cellular device from a GSM carrier to another GSM carrier may have limits with GSM services.
Sprint and Verizon services have problems with international areas (outside of the USA) where LTE is weak or no LTE. The reason is that CDMA is very limit or doesn't exist in most international areas (outside of the USA). The areas that CDMA still works internationally (outside of the USA) will be phased out (mostly in the near future). Only a few places outside of the USA, like China, would CDMA not be phased out so quickly. But CDMA will end up completing phased out all together sometime in future (including in the US).
If you want to be truly Global then go for carriers that have both GSM and LTE, like T-Mobile, AT&T, etc. Then once you unlock the SIM then you can use your carrier's roaming (which don't need SIM unlock) or switch the SIM card with a carrier in that country to get service internationally. Just a side note: T-Mobile does have Unlimited 3G international roaming without any extra cost (this is subject to the type of plan you have with T-Mobile).
The only way this would work for you is if the CDMA radio is built into all Note 8 devices. If so then you just need to flash the correct radio firmware to active the correct carrier radios. But I don't believe this is the case. And this wouldn't solve the Sprint SIM lock issue.
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ALL US Note 8s (N950U and N950U1) are identical. Same radios. Same hardware. Same everything. Only difference is the preloaded firmware. I actually think the Canadian Note 8s (N950W are the same, too, sonce they can run the N950U firmware).
So it's not an issue of missing a CDMA radio. It's an issue that Sprint will not accept the IMEI for another carrier branded Note 8 (or S8/+). You can only activate Sprint or Factory Unlocked devices on Sprint.
As Note 8 has both GSM and CDMA capabilities, why shouldn't an unlock T-Mobile work with Sprint?
RossTeagan said:
As Note 8 has both GSM and CDMA capabilities, why shouldn't an unlock T-Mobile work with Sprint?
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Sprint won't accept any devices on their network unlocked or not if they came from any other carrier. Sprint only allows Sprint phones and factory unlocked devices. Its Sprint, they suck.
Gizmoe said:
Sprint doesn't allow other carriers phones on their network. Unlocked or not. T-Mobile does though...
https://forum.xda-developers.com/galaxy-note-8/help/cdma-unlock-verizon-note-8-sprint-t3732364
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Gizmoe said:
Sprint won't accept any devices on their network unlocked or not if they came from any other carrier. Sprint only allows Sprint phones and factory unlocked devices. Its Sprint, they suck.
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i just switched my tmobile note 8 to sprint today, lol..
Thread cleaned due to much spam! I remind you to follow XDA Rules and especially to respect all XDA users.
ilikebigjugs88 said:
i just switched my tmobile note 8 to sprint today, lol..
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On Sprints website it still does not list the tmo note 8 as compatible for BYOD. It says only the note 8 special edition is. However it is not unlikely they stopped blocking the other U.S. carrier versions. People have gotten devices to activate in the past, but with minimal network functionality. Is your Note 8 fully utilizing the LTE network?
Either way this thread brings trouble so its now closed
Sprint allows sprint capable devices such as clean sprint,Boost and such and subsidiaries that run on sprint only.
@cp1024 @Gizmoe
The Special Edition devices are the ones sold directly by Samsung as factory-unlocked models. Samsung over the years has used the term inconsistently across their site and marketing materials.
Only Sprint calls them "Special Edition", otherwise they are the U1 models, vs U for carrier branded.
Which means they as of the time this was printed will only accept this model
Maybe some others have managed to pull something off but this is official answer
my post above is how it has always been in the past
And it ends here