Might be a silly question but aren't devices that are the same made the same with the same hardware? Like is it made specifically for each carrier? They made 10 different version with different chips and whatnot for that carrier? what's making me not flash Sprint bootloader/recovery/Rom to a Verizon phone of the same device. Couldn't we just hack it to spoof to make it think its a Sprint phone? Im confused on why they would do such a thing, and maybe yes GSM/CDMA phones are different but i mean GSM to GSM /CDMA to CDMA. whats the deal?
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I have an unlocked tp and i talked with verizon trying to set it up to use it on there network and they say i cant use it with them even tho i have the good esn number and all? what should i do have you guys heard of this or was that guys just being stupid?
I think im going to resell it or trade it for a verizon version. if any one wants to trade for a sprint version thats unlocked and comes with many extras in the orignal bo x with a 1 gig card and the mighty rom with android I will sell or trade it for 160 its in great condition Davey
there are two types of wireless networks in the world: GSM and CDMA. your phone is GSM in hardware = can't be changed), and verizon's network is CDMA = not comaptible.
correct me if im wrong but the sprint is the cdma and the att is the gsm. this phone has mightys cdma rom on it. it would have bricked the phone if it was gsm right at least that is what all the info i have read has told me. I have even flashed it to the stock verizon rom which is cdma and it was fine. I have found a few pages in the wiki about how to use it on the verizon network i will try they look kinda complicated tho.
DadamsJR said:
correct me if im wrong but the sprint is the cdma and the att is the gsm. this phone has mightys cdma rom on it. it would have bricked the phone if it was gsm right at least that is what all the info i have read has told me. I have even flashed it to the stock verizon rom which is cdma and it was fine. I have found a few pages in the wiki about how to use it on the verizon network i will try they look kinda complicated tho.
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sprint & verizon are cdma, t-mobile & at&t are gsm.
i haven't tried flashing a cdma rom on my fuze... i know it is highly unrecommended. but i am sure there is a way to tell if ur phone is gsm or cdma, probably by looking at the sticker under that battery.
Dad is correct.. Sprint is CDMA jsut like VZW... and there is an easier way to tell if it is GSM or CDMA..... Take off the batter cover.... Do you see a Sim Card? If Yes, then it is a GSM... If No, Then CDMA unless it is GSM and no sim card is in it.. then power it up... it will say SIM CARD MISSING... That will tell you that it is GSM.....
Hope that helps.
I know its cdma for a fact it has sprint across the front and it has a cdma rom on it
This question is from ppl where they have no carrier boundation but all ppl can give their opinion Can i buy a android smartphone from a carrier based company like at&t or t-mobile and bring it to my own country where is no carrier boundation and get the phone rooted/unlocked will it be able to run normally like other phones/unlocked phones? I'm asking this coz i live in a non-carrier bound country,cost of unlocked/sim free phone is 550$ and carrier bound is 150$. Now even the dumbest would had understanded why im asking it Plz answer this coz i dont know it. Thanx in adv.
Yes if you can get it unlocked it will work just like an unbranded phone. You have to be careful with the frequency bands though. T-mobile uses the 1700 band which isn't prevelant overseas. AT&T phones work well all over the world, as they use the same bands as most other GSM networks. Verizon and Sprint use CDMA instead of GSM, so they would be useless for you.
lowandbehold said:
Yes if you can get it unlocked it will work just like an unbranded phone. You have to be careful with the frequency bands though. T-mobile uses the 1700 band which isn't prevelant overseas. AT&T phones work well all over the world, as they use the same bands as most other GSM networks. Verizon and Sprint use CDMA instead of GSM, so they would be useless for you.
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Thanks for ur response btw in my country 900/1800 band is used. Can u tell me specifically other than cdma network which carrier uses this type of bandwidth?
Ok, so I've searched all over and haven't had much luck. I have no experience with cdma phones, as t mobile is all I've ever had.
I was given a new US Cellular HTC Hero s. I opened it up and saw the sim slot and though, sweet I can replace my sensation with it (I smashed the screen pretty bad). Well, that was a no go, as the phone is cdma. Looking online though, I see it can run in gsm (options global mode, cdma mode, gsm / umts mode. I unlocked the bootloader using the htc site (not sure it matters) and popped in my sim card again, and tried both global and gsm mode, though neither got signal or would dial out. (under networks, it had the tmo apn info.)
So, is the GSM mode offered on this phone only for non US bands? Would a custom rom (now or down the road) allow it to work on tmo? I read something about the HTC Merge and someone being able to switch out the modem in the rom that allowed it to work in the US, but that is well beyond me. I can follow instructions, work ADB and flash roms.. but thats about it.
Is it possible, or will it soon be, to have this phone work on GSM or am I just stuck trying to sell it as a us cellular phone (or perhaps another cdma carrier.. like I said, I don't know anything about cdma)
As a Canadian I'm not sure about who owns US cellular or if they are their own company but I'm guessing they work like Verizon world phones. They have sim card slots but will work only outside of the US. If those verizon phones are used within the States, they will only pick up Verizon's frequency, as opposed to T-Mobile or AT&T where you can unlock them and use them with any GSM carrier within the States. But yeah, you can unlock it and it will work with any GSM carrier outside the States but within the States I think it will only work under US Cellular CDMA network...please correct me if I'm wrong.
That's right, u.s. cdma "world phones" have gsm radios but are locked down from connecting to gsm networks in the u.s. This is not just the normal sim lock found on gsm phones but they are hard coded to ignore u.s. gsm networks.
Some have been unlocked to work on any network through various methods including flashing a modem from a non-us varient of the same phone and other hacks. I can't comment specifically on this phone however.
Sent from my SPH-D700 using XDA App
Well, that points me in the right direction, and confirms what I read about swapping modems (on the other phone mentioned).
So basically it's software telling it not use a certain frequency, and not that the phone itself is incapable of picking it up (had my doubts about that)
Pretty shady the way phone companies are allowed to operate (don't get me started on my unlimited internet in my contract [pre data caps in tmo]. "Hey! check it out, this phone uses data 5 times faster than your old one, oh, and you get half as much too) sorry, end of rant.
I'll keep searching, and post if I find something..
On a side note, can cdma phones be flashed to another cdma carrier like verizon or sprint, or is it the same deal, coded to only use a certain frequency range?
only thing I've heard of is flashing sprint and verizon phones to cricket, metro pcs and boost.
Hello
It sucks being an european and to have a 4g/cdma phone because in my country (Romania) you dont have a cdma network
So as we all know the Thunderbolt has the same chipset as the Rezound so in theory it should be able to transform into a Global Phone.
My question is why didn't anyone do that and how i can make one myself if a dev dosent bother.
I feel it in my guts that this will work but i need some guidelines, or someone with actual knowledge to help me.
charris said:
Hello
It sucks being an european and to have a 4g/cdma phone because in my country (Romania) you dont have a cdma network
So as we all know the Thunderbolt has the same chipset as the Rezound so in theory it should be able to transform into a Global Phone.
My question is why didn't anyone do that and how i can make one myself if a dev dosent bother.
I feel it in my guts that this will work but i need some guidelines, or someone with actual knowledge to help me.
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Thunderbolt doesn't have the hardware. Not possible.
and what hardware are you talking about?
Thunderbolt has a CDMA radio and an LTE radio. Global phones need a separate GSM radio to work in Europe. If it has an unlocked SIM, the Thunderbolt should work on any 700mhz band LTE network, but is incompatible with GSM on all levels.
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MDM 9600
Actually, the Thunderbolt has an MDM 9600 baseband chipset that supports Hspa and Hspa+ which is a technology that At&t and T-mobile uses for their data connections. So, I believe that if the LTE radio is backwards compatible with those frequencies of At&t or T-mobile that it might work. The thunderbolt has two antennas: one for strictly CDMA and the other for lte and backwards compatibility to gsm/hspa(+) from what I understand. From what I have read Verizon has just opted to not install the drivers to support the GSM/HSPA(+) side of things. That, and the MSM 8650 processor or other hardware in the Thunderbolt may not support it. Just because the modem supports GSM/HSPA(+) doesn't mean the phone will, but I do think that if someone really wanted to they could modify the thunderbolt to work on GSM. The may need more hardware, but I do not know.
I would post the link about the chipset I have, but sadly as a noob it will not let me.
P.S. Verizon allows you to log-in to your account and view the unlock code for the thunderbolts SIM yourself. You do not have to call them. I have not used another Carriers SIM in my Thunderbolt, but HAVE read about people who have in other threads. Verizon from what I understand and have read on other forums does not allow you to use USA SIM cards other than VERIZON'S own SIM. From what I have read, it only unlocks the phone to use foreign country SIMs only. From what I had read, once you use VERIZON'S SIM unlock procedures a NEW menu pops up in your network settings giving you the option to select to use GSM only. The same thread was speaking about the iphone 4s and the Thunderbolt and said that Verizon allows for both to be unlocked and used as World Phones. I will not know for sure until I see proof, but I do know that Verizon allows you to unlock the Thunderbolt's SIM to use on Foreign Networks.
The MDM9600 baseband definitely supports quad-band GSM. However, the RF transceiver in the Thunderbolt may or may not, and the power amplifiers definitely do not. You need all three in order for a mode & band to actually work on a device.
Not possible from a hardware point of view.
so im trying to find a non-smartphone that works on att. i was just going to stick with att phones but i see alot of verizon phones that i like. i understand that an at&t phone needs to be compatible with umts 850-1900 for 3g specifications since att shut down 2g but what about tmobile/verizon specs? i see alot of verizon phones with cdma 800/1900. would that mean it would work withh att after unlock?
shatheone said:
so im trying to find a non-smartphone that works on att. i was just going to stick with att phones but i see alot of verizon phones that i like. i understand that an at&t phone needs to be compatible with umts 850-1900 for 3g specifications since att shut down 2g but what about tmobile/verizon specs? i see alot of verizon phones with cdma 800/1900. would that mean it would work withh att after unlock?
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I wouldn't bother with a 3G device, many networks are dropping or will be dropping 3G in the very near future, it would be a waste of time, money and headaches to go for a device that is quickly coming to the point of no longer being supported.
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