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I'm a T-Mobile Prepaid customer using a simple $19 phone but am planning to purchase a no-contract smart phone, say Samsung Galaxy S 2 or HTC Amaze 4G.
If I buy one of these for T-Mobile Prepaid, am I locked in there, or the phone is useful even if I might move onto another carrier such as Verizon or ATT, or to another Plan within T-Mobile later?
xdabyk said:
I'm a T-Mobile Prepaid customer using a simple $19 phone but am planning to purchase a no-contract smart phone, say Samsung Galaxy S 2 or HTC Amaze 4G.
If I buy one of these for T-Mobile Prepaid, am I locked in there, or the phone is useful even if I might move onto another carrier such as Verizon or ATT, or to another Plan within T-Mobile later?
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No you are not locked in if you buy a phone off contract. You will not be able to move to verizon or sprint with the phone though, because they use CDMA and not GSM like the rest of the world.
you can outright buy the phone, but check to see if they have a pre-paid plan/data plan for that phone, it will not be unlocked so you cannot move. You can request t-mobile to unlock it though, but you will not get the same 4g speeds
Please use the Q&A Forum for questions Thanks
Moving to Q&A
lowandbehold said:
No you are not locked in if you buy a phone off contract. You will not be able to move to verizon or sprint with the phone though, because they use CDMA and not GSM like the rest of the world.
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Thank you. Does that mean I can use the Samsung Galaxy S2 No-Contract Model I buy from/for T-Mobil Prepaid now for other carriers of GSM? May I understand from your reply message(s) that T-Mobile is a GSM format carrier(and so is AT&T?) as opposed to Verizon and Sprint being a CDMA guys? If so, I can use the phone as long as my next carrier is a GSM guy? Does this make sense?
djjuice said:
you can outright buy the phone, but check to see if they have a pre-paid plan/data plan for that phone, it will not be unlocked so you cannot move. You can request t-mobile to unlock it though, but you will not get the same 4g speeds
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To: djjuice -
Thank you. I will do some homework in order to understand what "locked", "unlock" and " . . . will not get the same 4g speeds" mean.
Even unlocked the phone may not support the 3G or "4"G data speed between TMobile and AT&T. The AT&T Galaxy S II will not run on TMobile 3G data, only Edge (2G) data, because they run on different frequencies, same thing with the TMobile Galaxy S II does not support AT&T frequencies. If you buy the phone off contract from TMobile, they should unlock it for you, but there is no guarantee it will work (fully) anywhere else.
If you buy a phone off of craigslist even though you are buying it off contract you cannot guarantee it can be unlocked freely. For example if you buy an AT&T phone used from someone, AT&T will not unlock it for you for free until it's a certain number of months old (based on when the first person bought it from AT&T). You would have to pay a third party for an unlock code (if there is no help here on xda to unlock it).
It's best to just buy a phone for the carrier you plan on using. That ensures its going to work, and that it will work at full speed. If you really think you are going to switch to AT&T buy one of their branded phones, or Verizon etc. Verizon and Sprint both use CDMA, but they are very resistant to allowing another carriers phone on their network. Plus their 4G networks are different types (Verizon uses LTE, Sprint WiMax) so they wouldn't work fully regardless.
Thank you, quarlow.
My budget is around $600 max. So I'm inclined to purchase an HTC Amaze 4Z or Samsung Galaxy S2 for use for T-Mobile Prepaid at Target or at T-Mobile. T-Mobile Net Shop is selling Galaxy S2 Re-Furbished at a discount price. Hear Galaxy S2 have high rate of initial failures and therefore maybe better to buy a re-furbished one that has failed once and was repaired by qualified repairman. Below is how I come to think of buying a smart phone now. I've been happy with a simple prepaid phone buying 100 minutes at a time, which lasts more than a year for me. I also use a Sony Clie, a PDA running Palm Desk Top, which has gone obsolete long time ago. With a smart phone such as Galaxy or Amaze 4Z, I can leave not only the PDA but also a digital camera home. I do not need to access my PDA data over internet. I will import necessary data from my PC to my new smart phone either via cable or via WIFI before going out. That's why I want to remain "Prepaid Customer" not a customer with monthly fees. (Besides, I am not so much interested in leaving my data at ISP's servers.)
Thank you.
I haven't heard of high failure on the Galaxy S II's for TMo. But I have seen several studies showing refurbished devices have lower failure rates because they can have problem components replaced, and have to pass full qa testing twice.
If you are going to put all your data on your phone via USB on the computer, or wifi, then data compatibility won't matter. That changes the whole issue of taking it to another carrier. Any att or TMo phone that is unlocked will make and receive phone calls, text messages and mms messages just fine on the other network. You will only notice the difference when web browsing, or downloading files. If you aren't going to do that, then it wont make a difference.
Knowing that and your budget I would say get a international version of the phone. Get the Galaxy S II (i9100), or the Galaxy Note, or the Galaxy Nexus. All of those phones are top tier, and international versions will receive updates quicker. The Nexus being the Google device will be the first ICS device to get the next version of android, so its the most future proof. The GSM version of any of those phones will likely come unlocked.
The i9100 has a 4.3" screen, and 1.2Ghz dual core Exynos chip. The TMo version has a 4.5" screen (same resolution) with 1.5Ghz dual core qualcomm chip. The bigger screens did have issues with splotches and vertical lines far more than the 4.3" screen. With them being the same resolution the smaller screen is crisper. The Exynos chip is made by Samsung and widely regarded as the better chip, even at a slower speed. It also comes with a more powerful gpu than the qualcomm chip. So, the graphics are better, and games run better. The att version (i777) is almost exactly the same as the i9100, except it has the U.S. norm of 4 buttons, vs the international 3 buttons. The dev support on xda for the i9100 is unmatched by any other phone, its an amazing device with a huge support and user base.
The Galaxy Note is a 5.3" half phone half tablet with a stylus, and 1.4Ghz dual core Exynos chip. Its screen is a whopping 1280x800 resolution. But, for some that's too big.
The Galaxy Nexus has a 4.65" screen with 720p resolution (this screen is pentile which means it doesn't have as many sub pixels as it could. Its hard to explain, Google pentile vs rgb and there should be plenty of explinations. But, most reviews say at that resolution you need a microscope to tell). But the real strength with that device is that its the pure Google device. Its running Android the way its meant to be ran, unbloated and unrestricted. That is the Rolls Royce of Android phones for the next year. The Nexus S is last years Google device, and will be the first gingerbread device with an official ICS upgrade, if it isn't already upgraded. Its like a Mercedes at this point, its got the pure android experience, but its running last years tech: 4" screen, 1Ghz single core hummingbird chip.
I'm sure that is way more information than you ever wanted to know, but I hope it helps.
Sent from my Galaxy S II (i777)
quarlow said:
Even unlocked the phone may not support the 3G or "4"G data speed between TMobile and AT&T. The AT&T Galaxy S II will not run on TMobile 3G data, only Edge (2G) data, because they run on different frequencies, same thing with the TMobile Galaxy S II does not support AT&T frequencies. If you buy the phone off contract from TMobile, they should unlock it for you, but there is no guarantee it will work (fully) anywhere else.
If you buy a phone off of craigslist even though you are buying it off contract you cannot guarantee it can be unlocked freely. For example if you buy an AT&T phone used from someone, AT&T will not unlock it for you for free until it's a certain number of months old (based on when the first person bought it from AT&T). You would have to pay a third party for an unlock code (if there is no help here on xda to unlock it).
It's best to just buy a phone for the carrier you plan on using. That ensures its going to work, and that it will work at full speed. If you really think you are going to switch to AT&T buy one of their branded phones, or Verizon etc. Verizon and Sprint both use CDMA, but they are very resistant to allowing another carriers phone on their network. Plus their 4G networks are different types (Verizon uses LTE, Sprint WiMax) so they wouldn't work fully regardless.
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Actually the T-mobile SGSII supports AT&T 3g.
lowandbehold said:
Actually the T-mobile SGSII supports AT&T 3g.
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Att 3G runs on 850 and 1900, with preference on 1900 generally. The TMo looks to have 850, but not 1900. So like the vibrant the support will be spotty at best. It may work in some places, but not everywhere.
Sent from my Galaxy S II (i777)
To quarlow and lowandbehold -
Very informative! Thank you very much.
I will stay with the plan to go for a Galaxy S2(i1900) or an HTC Amaze 4Z for TMO Prepaid. If there be good prepaid phone service(s) available from other carrier(s), I'd definitely want to learn about.
Hello everyone,
I've been searching sometime for an answer but I seem to keep getting conflicting information. Here's the gist: I'm moving to South Korea long term and I have a Samsung Nexus S that was purchased through Koodoo. Works like a sweet machine and I'm loath to give it up. I'm just wondering if it will work when I bring it over instead of forking out money again for another smartphone.
Reasons I think it will work: Nexus S seems to have a wide range of frequencies that it is compatible with, designed to be a world phone, etc.
Reasons I think it might not work: I keep hearing different information on South Korean frequencies from CDMA only to god-knows-what.
Can anyone out here help? It's quite confusing to me. If it won't work then I'll likely try to resell it (still in pristine condition) before leaving instead of bringing it all the way over and it being unusable. However if it does work, again, it would save me buying a new smartphone over there which will probably cost me more in the long run.
Any advice is MUCH appreciated. Thanks!
I'd like to say that it should work fine in S.Korea givin that the i9020 is basically the m200(Korean nexus s). I'm not completely sure though, I can be wrong so don't count me in on it 100%. If it's possible I would contact a Korean GSM telco through email and ask, they'll know if your nexus s is compatible with their bands. I would do that JUST to make sure
What model of Nexus do you have? Do you what bands/frequencies South Korea service providers use?
Hello
I'm looking at replacing my S4 with an S7. My carrier in the US is AT&T and that won't be changing. I've been looking at different unlocked versions and can't find a solid representation of what the real world differences are. I know they have different processors. Some say a band is missing, but does that matter. I don't use android or samsung pay, but i know there is a difference here too. I found one comment about some kind of samsung 'coverage' plan, but what is that?
Best Buy has US unlocked phones for about $700. B&H Photo has an International phone for about $640. Its a lot of money either way. Is one phone really better or different than that other?
I am planning a trip through Canada and maybe to Europe. I assume either would take a SIM from those areas and I could avoid getting raped by international fees.
Here is a summary of question I can think of:
Does the US unlocked phone from BestBuy have a warranty or insurance or anything like that?
Can the US phone be rooted. I only do this to remove apps I don't use.
Is the hardware one vs the other really better or just different?
Does a dual SIM do anything useful?
Does a band being missing make a real world difference?
Is there a good comparison somewhere to that can decide on a phone to purchase?
It comes with a limited warranty as stated on their site:
"This device is not warrantied through the manufacturer. This device has a limited 1 year warranty provided by CCR Warranty. To obtain technical or warranty assistance, please contact CCR Warranty at 866-579-8436."
What I don't know is how useful/limited that warranty is. I'd like the HTC 10 but the unlocked S7 is my runner up, and the warranty issue is one of the major factors in my hesitation.
I do believe it can be rooted.
As far as I know, through research, the only major difference between the two is battery life.
Hello, I'll just go straight to the answers.
1. I'm going to assume that if you go through a carrier (att, t-mobile etc etc.) they will offer an insurance plan. You will have to go to third party insurance for the international version
2. As far I know, the US version does not have a root option yet. Because of the locked bootloader.
3. Hardware will depend on which version you choose. Both are very good.
4. Dual sim is as the name implies, you'll be able to use 2 separate sim cards with their respective #s. that's the only benefit really.
5. Missing radio bands is something you may have to do some research on depending your location.
6. I'm sure YouTube or some online site will have some reviews/comparison of both.
I just looked at the best buy website again and something is different. The S7 listed for $690 is definitely the international version and not the US version. When I looked last month I was positive that the phone was listed as a US phone ... huh
A little late
a little late to the thread but just wanted to share what I learned while researching the matter.
There is an US unlocked version of the S7 (g930u) and available through a few places (Best Buy, B&H, Ebay). It goes for $679.99 retail and I have not been able to find one that goes for less. Probably because it just came out end of June. The biggest benefit of it is that it has a bunch of bands and CDMA-compatible. Thus, you can get full connection with AT&T and TMobile. Downside is no wifi calling or VOLTE (as those seem to be locked by the carriers to their own phones).
The international versions (930f/930fd) are both available on Ebay/Swappa for about $500. Upside are that they have the Exnyos chip and no bloatware. You can also root and flash them with new ROM. Another thing is that you get updates earlier. I got Marshmallow on my s6 a month or so before AT&T released its update. Downsides are no Samsung Pay or WiFi Calling/VOLTE and the biggie...missing bands. I had a g920i and it was missing support for bands 29 and 30 on AT&T...this led to poor LTE and indoor reception at times. I would have to turn on/off the mobile data switch sometimes to get good connection.
Finally, we have carrier based versions, which loads you down with bloatware and has the Snapdragon chip. But, it does support all features of your carrier. Slower updates also an issue and lack of support of all bands internationally are additional drawbacks. Cost is also about $500.
Personally, I am going with an unlocked 930a. Bloatware sucks but I can delete or disable almost all of them. Snapdragon seems pretty powerful to me. Samsung Pay, Wifi Calling, and Band support are just too important for me. Note, make sure you ask the seller on Ebay/Swappa about whether the phone is unlocked.
Hope that helps.
I did a lot of research into this before buying my S7 but was kind of screwed since I'm on Verizon (CDMA)...
Since you're on AT&T you have more options.
There are two different processors in the two different models, Snapdragon 820 in the US CDMA capable and an Eyxnos in the International GSM ONLY phone.
After doing my research, I personally recommend the Eyxnos, which I couldn't get :/
If for nothing else, better battery life, by far. Do some research into the comparison between the two.
However! When buying from Best Buy be careful!
Last I checked, on their website, the black/onyx S7 was an unlocked US Snapdragon 820 phone.... while strangely enough the other two, gold and silver? were both unlocked US (actually international) Eyxnos phones.
Also, last I checked Samsung themselves only sell the CDMA snapdragon processor model to the US.
Unless Best Buy made a mistake listing the Eyxnos processor, it is the only way to get that model without buying an "internationally sourced" phone on ebay.
Just a few notes:
1) The G930u is fully compatible with all the US Carriers
2) VoLTE works on both T-Mobile and Verizon
3) Wi-Fi Calling works on T-Mobile and potentially Verizon (but I am not positive about Verizon).
The big downside to the G930u is that for whatever reason it is not receiving updates from Samsung when its branded siblings are.
I have VZW but am looking to get the S3 Frontier LTE through T-Mobile. It amazes me with the launch date being tomorrow VZW has no information on the S3.
That being said. How seamless will it be using a VZW S7 Edge and T-Mo Gear S3? I figure I can connect via BT when carrying my phone but how about when I want to leave the phone behind. Some have said the Gear app will allow me to forward the calls from the phone to the watch. How does that affect texts and other features?
I travel internationally so having T-Mo might not be a bad idea with their international included in their plans.
Thanks for any info you can provide.
It will very likely not work at all on Verizon's LTE (although it should work fine as a Bluetooth watch). Verizon's primary LTE band is B13, and the T-Mobile version of the Gear S3 Frontier doesn't support it.
I've read in numerous places that the SIM is embedded and will not work on any network but the seller's.
Dodge DeBoulet said:
It will very likely not work at all on Verizon's LTE (although it should work fine as a Bluetooth watch). Verizon's primary LTE band is B13, and the T-Mobile version of the Gear S3 Frontier doesn't support it.
I've read in numerous places that the SIM is embedded and will not work on any network but the seller's.
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I'm not talking about using T-Mo's version on VZW. I'm talking about going with T-Mo service with the S3 but syncing it with my VZW S7 Edge.
P7M8 said:
I'm not talking about using T-Mo's version on VZW. I'm talking about going with T-Mo service with the S3 but syncing it with my VZW S7 Edge.
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Apologies, I've seen too many posts from people that want buy the TMO or AT&T LTE versions with the intent to use them on VZW.
Given your requirements, I don't think it will be as seamless as you might like, and I suspect it's a fringe use case so finding someone with practical experience may take some patience.
You might want to consider posting your question on the S2 thread, since it should not be any different with the S3. There are more of those users out in the wild, some of which may doing what you are considering. I too will likely be be crossing carrier lines, so please share your findings/experience.
afblangley said:
You might want to consider posting your question on the S2 thread, since it should not be any different with the S3. There are more of those users out in the wild, some of which may doing what you are considering. I too will likely be be crossing carrier lines, so please share your findings/experience.
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Thanks. Great suggestion!
P7M8 said:
I have VZW but am looking to get the S3 Frontier LTE through T-Mobile. It amazes me with the launch date being tomorrow VZW has no information on the S3.
That being said. How seamless will it be using a VZW S7 Edge and T-Mo Gear S3? I figure I can connect via BT when carrying my phone but how about when I want to leave the phone behind. Some have said the Gear app will allow me to forward the calls from the phone to the watch. How does that affect texts and other features?
I travel internationally so having T-Mo might not be a bad idea with their international included in their plans.
Thanks for any info you can provide.
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Click to collapse
It will work just as seamless as it would if they were both on the same carrier. I've used the s2, s2 classic and now I have the s3 from tmobile with my Verizon phone. I wish it did the number sync, but AT&T'S the only one that does that.
I used to have T-Mo Galaxy phones, but now I only use my work phone: Verizon S7 Edge. I have had all the Gear S watches since the first one a couple years ago. I switched to my Verizon phone a few months ago and it was seamless to pair with my Gear S2 and now with my Gear S3.
However, I am having a weird issue since I started using my Verizon phone (with Gear S2 and now the same problem with my Gear S3). Not a total deal-breaker, but annoying, nonetheless. I am sure there is a solution out there, so I am not giving up on the watch just yet. For no apparent reason, calls will sporadically be auto-answered (on the phone) or will go straight to voicemail and I'll get a notification a few minutes later, which is the only way I realize I had a missed call. The only thing that has changed is the phone is a Verizon model, so that is the only thing I can think of. The Verizon call forwarding is a little different than the way T-Mo does it, so that is all I can think of that could be the possible cause.
Other than that the T-Mo watch works fine with a Verizon phone. Just curious if anyone else has this problem or if they have the same set up and are not experiencing the problem.
I've owned a few phones, notably my long-time companion Note 4 (TMobile). Recently my office announced they're flipping our TMobile account to Sprint. We get a "new" phone but not quite cutting edge... though a Note 5 seems a nice move forward despite the loss of removable battery and extra sd-card slot. But can someone explain to me the strangely unpopulated page here compared to the Note 4's page (or even the One Plus 2 page, where actual Oreo roms are popping up like weeds)? Is it all about the Exynos chip, or Sprint, or what? There's a dearth of new development going on here compared to my other two phones and I'm baffled. Thanks....
The 920P it is not very compatible. Being just a USA phone, It doesn't get enough attention from developers*. All Note5 and S6 phones are Exynos, but the Sprint models just have poor support. And they are also 3 years old.
*The Sprint model doesn't work very well outside the Americas (continent)
cachanilla86 said:
The 920P it is not very compatible. Being just a USA phone, It doesn't get enough attention from developers*. All Note5 and S6 phones are Exynos, but the Sprint models just have poor support. And they are also 3 years old.
*The Sprint model doesn't work very well outside the Americas (continent)
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Well, that's not what I want to hear. Tell me something comforting! HAHAHAHA.
If at some stage I want to unlock the phone (say in 8 months or less when TMobile and Sprint merge) will it have all the hardware inside it to function as a TMobile or other provider's phone? Incl. LTE, wifi calling, and the rest?
shonkin said:
If at some stage I want to unlock the phone (say in 8 months or less when TMobile and Sprint merge) will it have all the hardware inside it to function as a TMobile or other provider's phone? Incl. LTE, wifi calling, and the rest?
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I don't think so, this being a carrier specific model it is very limited so you can't use it elsewhere. In Mexico I get LTE with the most popular carrier and some other people in Vietnam and India. You can wait to see if it works for you.
I did find this thread on sprint that discusses unlocking (domestically) the Sprint Note 5 for use as a GSM phone (TMobile, AT&T and the like). At some point it may be of use to me or someone else...
https://community.sprint.com/t5/Sam...ng-Note-5-for-Domestic-use-on-GSM/td-p/960238
I did finally get the Sprint Note 5, by the way.... first thing I noticed is that compared to my old Note 4 its battery life *sucks*. But such a nice phone otherwise, despite no switchable battery or microsd slot. (I solved the latter to a degree by getting a 64gb version of the phone).
I unlocked my Note5 via a paid service...
Hello to Everyone:
This is my first post so please don't hold it against me. Thank you in advance.
I used the unlock service of idoneapps.com. it ran $35. Opted for the debranding option as well but skipped the MetroPCS option.
My phone is no longer Sprint branded and got rid of their bloatware. TWRP with SuperSu installed and I can pull out my T-Mobile SIM out and put in an AT&T SIM in and it works seamlessly.
Get access to the hidden menu and hotspot is unlocked while I get to manually select, (if desired), WDCMA, GSM, etc... Connects at LTE and the wireless switching works great. WiFi hotspot also works great.
Couldn't be more pleased as I also can turn off anything as the package comes with an app manager. It is great not to have Facebook, Snapchat, or the Sprint crud running. No more stupid Sprint boot animation.
I am currently running a Samsung branded Nougat 920P that I had my own IMEI number generated TWRP let's me access the recovery mode and let's me flash perfectly.
XPosed is installed with, AdAway 3.3, ViperFX 6.5.0.5, YouTube ad blocker, rootcloak. Upgraded to SuperSu pro however I still haven't managed to go systemless.
I play Crash Fever so I am stupid and actually spend money that game so my Google Play code redeeming works fine. Samsung Pay won't ever work because of rooting but oh well... ACMarket, MS office mobile, the Samsung Suite of apps, and all the S-Pen features work seemlessly.
Anyways, I hope I didn't violate any rules by my posting as I love XDA as this community is phenomenal.
If you have any questions, please don't hesitate to ask me as I would be glad to field any questions or facilitate details as may be needed.
Eagerly awaiting an Oreo update.
Gellybean777