[Q] Vibrant 3G to 4G Hardware Hack? - General Questions and Answers

Hello everyone,
I have a 3G Samsung Vibrant. In light of the recent launch, I'd like to know if anyone has replaced the 3G modem chipset in the Vibrant 3G with a "4G" modem chipset used in the Vibrant 4G. I am interested in trying to do this if it is feasible.
It seems that, since the phones are identical except for the modem/GPS chips and the FFC (which has already been modded into the 3G Vibrant), this might be possible with the right compliments of kernel drivers for (as intermediate steps) both of the chipsets.
So we extract the new kernel drivers from the 4G Vibrant ROMs, install chipsets from broken or ebayed 4G vibrants into our 3G vibrants, recompile the kernel...etc?
What do you guys think? Possible?
-David

BUMP! I'm curious

No you can't it doesn't work like that unfortunately. IMO you're far far far better off buying a 4G model with a broken screen and swapping out screens or something. The soldering used to attach these chips is impossible to do by hand.
Sent from my SCH-I535

Related

[Q] Does the Skyrocket have NFC?

I know that the OG SGS2 on AT&T is capable of NFC (thought from what I understand, it's not quite enabled in the software), and I've read that the T-Mo variant is too.
I'm looking to upgrade and am likely going to get either of AT&T's new LTE phones (The Vivid or the Skyrocket), and am trying to decide which. (I'm upgrading from an older phone, not an OG SGS2, so I'm not looking for a discussion on which SGS2 is better. Also, I'm in Atlanta, where LTE is live, so I'm not looking for a discussion on the merits of LTE, either.) Overall, I like the Vivid best, but would love to have the NFC. So if the Skyrocket does in fact have NFC, I'd probably go with that.
My question is: Can anybody confirm whether either phone has NFC? I've found conflicting things all over the internet, and searching XDA hasn't turned up anything definitive.
Thanks for the help!
I have seen the skyrocket myself and I can verify that the battery inside of it says Near Field Communication. I however, can not verify if it is an unlocked feature as it is in the OG one.
Great! Thanks for the confirmation! Any idea about the Vivid? (I think that one's more of a long shot, as HTC has not released any NFC capable phones yet, but I can hope, right?)
bjg222 said:
Great! Thanks for the confirmation! Any idea about the Vivid? (I think that one's more of a long shot, as HTC has not released any NFC capable phones yet, but I can hope, right?)
Click to expand...
Click to collapse
Get the skyrocket if you can! Super AMOLED+ is the best screen out there. HTC lost its flair recently. Samsung v/s iPhone it is now!
If it's disabled in software, you're better off with the I777. We're a LOT closer to reenabling it.
(as in - I can now read tags, but Google Wallet FCs.)
The manual states on pg 138 that it is disabled and will be activated at future date.
Hope these skyrocket threads can be moved to their correct destinations...
http://forum.xda-developers.com/forumdisplay.php?f=1383
Sent From My KickAss ATT SGS2 SPORTING CM7
I had the same question. It's a p.i.t.a. to find info about NFC. Samsung is worst. A handset without NFC chip, another with disabled NFC chip and a handset with enabled NFC. We talk about one and the same model. Some manufacturers and most carriers don't give info about NFC chip.
bjg222, HTC has the Incredible S NFC (yet only in China), and the Amaze (T-Mobile)! I don't have info if NFC is enabled or not.
At NFC-Phones.org you find available handsets listed by country and by carrier, also a summary-list with info about the NFC features. If the Phone has Tag, Pair, Share and secure payments enabled. Still many question marks, feedback from owners is hard to find, but working on it every day. Joao
how to enable NFC
The only way I am aware of how to enable The NFC functionality is to upgrade to ICS. I did and NFC is now an option to activate. Don't know how it works, though. No one near where I live is making use of that tech.

[Q] NFC on Galaxy S II

Some have NFC, and some don't. Does anyone have a more complete list, or have any tips on determining whether or not a given SGS2 has NFC? I am specifically looking at the Sprint version.
The Sprint version does not claim that it has NFC, but a random youtube post (most reliable forum on the internet) seemed to be claiming that it had NFC hardware, but the stock image that came on it does not support it.
I would love it if I could just pick up an SGS2 from sprint, and have NFC magically show up when I drop cm7.1 on there, but that seems like a pretty risky bet. Can anyone confirm or deny the existence of the NFC hardware on these phones?

[Q] 3G and 4G modems

I'm one of those guys that's interested in tinkering with things, including messing with the hardware of a phone, so logically what I found interesting about the latest rumors about the next hottest phone on the planet was that the Exynos version of the S4 will support LTE but won't have an LTE modem in it, while the Snapdragon version will have an LTE modem.
I'd like to assume that if you had two identical phones (any make/model), and one had a burned out modem for example, while the other had a burned out CPU, you could swap the modem chip to the working phone. I'm assuming the pinout on the CPUs would be completely different, thus preventing a CPU swap, yes this would void ANY and ALL warranties...
I have two questions based on this:
1) This one is a two-part question.
a) Will the 3G phone with the Exynos be unlocked?
b) If it is, is there any reason why it wouldn't be able to register with a US carrier?
2) If the above is possible, I can't help but wonder how difficult it would be for a professional to swap the modem chips between the two phones...
Admittedly, I don't know much about the boards on phones other than that I've seen JTAG ports added to some and RS232 ports added to others, but if those can be done, what's to stop someone (with the right experience) from doing a modem chip swap to get their Exynos to have 4G?
If this is one of those noob questions I'm sorry -- I'm more of a power user than anything, so I just don't know about the hardware aspect, but thats just something that would make sense to me.
Speeddymon said:
I'm one of those guys that's interested in tinkering with things, including messing with the hardware of a phone, so logically what I found interesting about the latest rumors about the next hottest phone on the planet was that the Exynos version of the S4 will support LTE but won't have an LTE modem in it, while the Snapdragon version will have an LTE modem.
I'd like to assume that if you had two identical phones (any make/model), and one had a burned out modem for example, while the other had a burned out CPU, you could swap the modem chip to the working phone. I'm assuming the pinout on the CPUs would be completely different, thus preventing a CPU swap, yes this would void ANY and ALL warranties...
I have two questions based on this:
1) This one is a two-part question.
a) Will the 3G phone with the Exynos be unlocked?
b) If it is, is there any reason why it wouldn't be able to register with a US carrier?
2) If the above is possible, I can't help but wonder how difficult it would be for a professional to swap the modem chips between the two phones...
Admittedly, I don't know much about the boards on phones other than that I've seen JTAG ports added to some and RS232 ports added to others, but if those can be done, what's to stop someone (with the right experience) from doing a modem chip swap to get their Exynos to have 4G?
If this is one of those noob questions I'm sorry -- I'm more of a power user than anything, so I just don't know about the hardware aspect, but thats just something that would make sense to me.
Click to expand...
Click to collapse
1. Carrier branded phones will be locked but you can find unlocked versions in cell phone stores.
If it is unlocked it will work with us carriers but not on LTE but HSPA +.
2. It not only hardware issues involved, there is also software issues involved as different chips are interconnected both on soft and hard levels so the phone does not have any conflicts on the motherbaord.

version differences gt-p5100 vs sgh-i497

So I'm sitting here seeing all these lovely people with CM10 on there tabs and feeling down and i remembered from awhile ago doing a gt-p5000 there were 3 variations of the tab one of them being a GSM model and I'm sitting here wondering as to why the gsm model(5100) wouldn't work for the (sgh-i497) I know I'm probably very crazy and having slightly wishful thinking but arn't they basically the same device
I would love to know this as well... or at least if anyone has thought to take a tmo rom and use that. Why is there no obvious dev work on the att version? Sure att sucks, but that is what im stuck with.
The GT-P5100 series is a totally different tablet than the I497. They have different CPU, GPU, Chipset, GPS structure, and a different network band support. I am sure there are more differences.

Does Mi4 have LTE now?

Planning to buy a new Mi4 from kijiji. Wondering whether it supports LTE bands in Canada? I;'m with telus
Short answer. No, not yet.
veladem said:
Short answer. No, not yet.
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Click to collapse
OK.Thanks
Is this a software issue or the LTE version is a different hardware in the future? In other words, if i buy the mi4 now, will i be able to get LTE when its available?
Sadly it seems to be a hardware limitation. Xiaomi was smart when they made the phone and only have it what it needed unlike some companies that overlook the small things and pay in the end.
yes it does not. as no opomart and other sites are selling FDD-LTE version which 1700/2100 works perfect with ATT / T-Mobile in US
4G:FDD-LTE 1800(B3)/2100(B1)MHz
This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?
shakim24 said:
This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?
Click to expand...
Click to collapse
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.
kibmikey1 said:
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.
Click to expand...
Click to collapse
Thanks for the insight bro. You really broke down into detail what was needed to be done. Was scrolling around and found this thread http://forum.xda-developers.com/showthread.php?t=2871269. Would like your opinion on it. It's for unlocking LTE as well.
I think they released the LTE-FDD version , seach for it!
already got one with LTE...its out already
Hi, I don't know how helpful this is for you but I have bought two from China for myself and my wife. Although I have not tried on the MIUI OS, I have flashed AOSP on to both phones and they both work at least on O2 and EE. I am receive 4G on my EE Mi4, however my wife does not have a 4G sim so can not confirm hers but she does receive 3G signals.
O2s 4G sim did not receive 4G signals on my Mi4 though (reason for me switching)
Hope this helps you
Only bands 1, 3, 41

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