Database Develop

Current Diamonds May have 850band!?!?

So I'm talking to one of the prominent Cell Phone Hackers / Repair guys in the city. Apparantly, he ripped open a diamond and it had the same chipset as the 850 diamond will have in it. He is saying that a ROM Update could unlock that frequency.
I debated with him stating that the chipset may be the same but there is no 850 antenna on it. He disagrees.
Any thoughts on this?

WorldIRC said:
So I'm talking to one of the prominent Cell Phone Hackers / Repair guys in the city. Apparantly, he ripped open a diamond and it had the same chipset as the 850 diamond will have in it. He is saying that a ROM Update could unlock that frequency.
I debated with him stating that the chipset may be the same but there is no 850 antenna on it. He disagrees.
Any thoughts on this?
Click to expand...
Click to collapse
i think he might be right since the preproduction had the band, though no one did ever test a preproduction to see if the band actually worked.

Pawel062 said:
i think he might be right since the preproduction had the band, though no one did ever test a preproduction to see if the band actually worked.
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Click to collapse
Engadget tested it, it didnt work.
A 900Mhz antenna would still work on the 850 band, it just woundn't be optimal, and you would end up with lots of harmonics. SNR would be lower, and the amplifier would end up at full strength most of the time, increasing the SAR.
Because of that they remove the calibration settings of the 850 band from the radio. Even if you changed the flag to enable the band (easier) you would need to somehow recreate all the calibration data (much harder).
Calibration data is specific to each device, so a flash from the US diamond rom (when/if its available) wouldn't be enough.
Its possible you could clone the calibration data from a US version of the diamond, but by then whats the point, just get a US version instead of frying your brain

someone1234 said:
Its possible you could clone the calibration data from a US version of the diamond, but by then whats the point, just get a US version instead of frying your brain
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I guess some people just like their brain well done
Maybe it's for the situations when people try to get a device for cheap, or 2 weeks before everyone gets it, but then they realize that it won't work in their country.. as it should

HTC HD7S on T-Mobile US... EDGE only?

Why oh why!
So do AT&T run their 3G on a different frequency to T-Mobile?
Is the only physical difference between the HD7 and HD7S the display? Or are there different chips inside - ie is the Mhz restriction in hardware or can it be overridden in software?
Rocking out on EDGE really isnt much fun!

Yeah, until the merger(if it happens) T-Mobile and AT&T use different 3G radio fregencies. Sorry 'bout that.

JamesDax said:
Yeah, until the merger(if it happens) T-Mobile and AT&T use different 3G radio fregencies. Sorry 'bout that.
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Even if the merger happens, at&t has already stated that anyone with a T-Mobile phone will have to get an at&t phone eventually. They aren't gonna keep T-Mobile's network around for long.
streetster said:
Why oh why!
So do AT&T run their 3G on a different frequency to T-Mobile?
Is the only physical difference between the HD7 and HD7S the display? Or are there different chips inside - ie is the Mhz restriction in hardware or can it be overridden in software?
Rocking out on EDGE really isnt much fun!
Click to expand...
Click to collapse
Pretty sure the only big difference is the screen. We haven't heard much else that is different, and there probably isn't much. Oh, the speaker grills on the top and bottom are not silver (if I recall correctly). That's about all we know.

[DEBUNKED] Hidden LTE Radio Capabilities?

EDIT: While the baseband may support LTE, an additional RF chip is required. Sorry
As some of you may know, I have been trying to details the hardware inside the Nexus 4, and I may have made and incorrect assumption based on the fact we were told it doesn't support LTE. I believe the Nexus 4 may have and LTE capable basband chip.
The Nexus 4 uses a snapdragon S4 PRO APQ8064. This SOC doesn't have a baseband chip at all, you have to add a separate chip.
It is unknown what baseband chip is in the Nexus 4, but we can narrow it down. As can be seen on the android central home page very very clearly, the baseband version is as follows:
M9615a-CEFWMAZM-2.01700.27
The first part of that caught my eye. M9615a. For 10 points, anyone know what baseband chip is in the Optimus G? MDM9615
M9615a... MDM9615... See where I am going with this here? Seems a little coincidental. Might be nothing but I thought I would throw it out there.
If Google is getting LG to use the same parts in the Nexus 4, then it seems to me that the Nexus 4 does support LTE (although NOT CDMA, so still no Verizon or Sprint).

l0st.prophet said:
As some of you may know, I have been trying to details the hardware inside the Nexus 4, and I may have made and incorrect assumption based on the fact we were told it doesn't support LTE. I believe the Nexus 4 may have and LTE capable basband chip.
The Nexus 4 uses a snapdragon S4 PRO APQ8064. This SOC doesn't have a baseband chip at all, you have to add a separate chip.
It is unknown what baseband chip is in the Nexus 4, but we can narrow it down. As can be seen on the android central home page very very clearly, the baseband version is as follows:
M9615a-CEFWMAZM-2.01700.27
The first part of that caught my eye. M9615a. For 10 points, anyone know what baseband chip is in the Optimus G? MDM9615
M9615a... MDM9615... See where I am going with this here? Seems a little coincidental. Might be nothing but I thought I would throw it out there.
If Google is getting LG to use the same parts in the Nexus 4, then it seems to me that the Nexus 4 does support LTE (although NOT CDMA, so still no Verizon or Sprint).
Click to expand...
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It may have the onboard chip, but doesn't it need a separate (a specific type of) antenna for LTE?

Wouldn't they have to test the chip's functionality at the FCC which would alert the tech writers who watch that stuff?
Those documents can be found here. You might be able to make heads or tails of any of it (I can't)

The reality is that LTE chips are significantly expensive to add to a smartphone, like in the $200 range. Part of The reason this phone can be offered for so low off contact is because it is HSPA only. I am also quite confident that they have to dissociate all of the radios inside the phone.
sent from SGS3 via tapatalk

evodon84 said:
The reality is that LTE chips are significantly expensive to add to a smartphone, like in the $200 range. Part of The reason this phone can be offered for so low off contact is because it is HSPA only. I am also quite confident that they have to dissociate all of the radios inside the phone.
sent from SGS3 via tapatalk
Click to expand...
Click to collapse
Is that expense attributed to the hardware? Seems a bit high to me, I would guess it is some sort of licensing fee to use that spectrum. if thats the case having it technically not supporting it would negate the fees while still possibly having the necessary radio for it. Completely speculating though.

Hi
I expect all the gobi modem range are software compatible and the base band shown is just the software identifier.
Regards
Phil

evodon84 said:
The reality is that LTE chips are significantly expensive to add to a smartphone, like in the $200 range. Part of The reason this phone can be offered for so low off contact is because it is HSPA only. I am also quite confident that they have to dissociate all of the radios inside the phone.
sent from SGS3 via tapatalk
Click to expand...
Click to collapse
Are you saying $200 just for LTE? Umm no. Research firms suspect it added $10 to the cost of the qualcomm chip for the iphone.

The baseband chip might support LTE (most likely it does), but the phone is probably missing the required amplifiers (LNA and PA) and filters to make it work in the LTE bands.

nm3th said:
The baseband chip might support LTE (most likely it does), but the phone is probably missing the required amplifiers (LNA and PA) and filters to make it work in the LTE bands.
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Click to collapse
That sounds much more likely the case. I will say that if it's possible I guarantee the amazing development community on here will have it functioning very soon after they get hands on it!

Having read some more, the iPhone 5 uses the same chip, but has an additional chip paired with it. I couldn't find out if it was to do with the CDMA models though.

nm3th said:
The baseband chip might support LTE (most likely it does), but the phone is probably missing the required amplifiers (LNA and PA) and filters to make it work in the LTE bands.
Click to expand...
Click to collapse
Also I would guess that qualcomm has locked out the functionality even if it is the same silicon. Common practice in the industry when you are selling a lower-end variant at a lower price. That could what the 'a' added onto the part number is for.

The second chip is the Qualcomm RTR8600 multi-band/mode RF transceiver for LTE bands, and s also found in the GSIII.
Sorry guys, my bad

[Q] Changing phone band/frequency

Hello, I am interested in changing the phone band or frequency to make a 520 that operates in the European 3G range able to operate in the US 3G range. I have a US 3G 520 at my disposal. I have tried swapping the outer shell that according to the service manual contains the antenna but that does not help. I have also tried putting the motherboard from the European phone into the US phone and it still does not catch the frequency, which tells me that the ability to select bands is on the motherboard itself, and no other parts.
Is there any way to make this possible?

Out of idle curiosity, is this something you're doing for some "to see if I can" reason, or is there some other reason you've probably put more time and effort than the phone is worth into this?
Also, different US carriers use different 3G bands. Which carrier are you trying to use?
Oh, and you might need to flash a US ROM to your phone. In fact, you might *not* need to do anything else, depending on whether the requisite radios are physically present (on a budget device like the 520 though, they may not be).

They are $50 on amazon without a plan, I love lumias, and I have three 520s, one to use as a phone, one just for games and media, and one because it's well...freaking $50 for a great smart phone without a plan. So yes I have spent plenty of time sampling different roms and the various 8 and 8.1 updates and features. I enjoy it.
I'm aware of the differences between t mobile and att as well as 3g bands in Europe and USA. I'm using att go phones. It "seems" upon taking an rm914 and rm915 apart the hardware is the same. If there is a difference though it would have to be on the motherboard for reasons I stated above. I wanted some insight from people who know more about this.

Note 5 Motherboard Compatibility

Hey I am new to the forum but I know this is the best place online to go for advice like this.
The problem is this: I have a Note 5 from T-Mobile. The wifi and bluetooth are acting funny, and I am assuming that the wifi chip/motherboard is failing.
I have a Note 5 Motherboard from Sprint that my brother broke, but before i take my phone apart and perhaps do more worse than good trying to squish the other motherboard into it, I wanted to know: Are these motherboards compatible?
I know that with the >Galaxy S6< the CDMA and GSM versions are different. There is a corner of the motherboard where the components are moved a little so the motherboard wont fit snug against the lcd carcass, and ultimately you cant shut the phone completely. All the CDMA variants use the Verizon motherboard so they are certainly compatible. No clue about the GSM variants they all have a different marking for each company.
Is this the case as well with the Note 5? In the pictures I am seeing online, they look identical... but I am afraid they might be generic stock photos of the motherboards so I don't want to rely on that.
Alternatively, are the GSM variants compatible with each other? If i bought one from ATT could i put it in a T-Mobile phone? Or does it have to be the EXACT SAME MODEL?
SUMMARY OF QUESTION: Are the N920P and N920T motherboards swappable? Are GSM variants of the Note 5 generally swappable? (N920A N920T N920M, etc)
Thanks in advance for any help!

N920 Note 5 variants and logic board compatibility
You would not believe, despite how simple and necessary your question is, that you'll not find the answer hardly anywhere on the internet. I know where I've searched will tell me if the frame for the Verizon version of an n920p would fit the logic board from an in 920p Sprint motherboard. Actually you've given me more insight than anywhere else of red from, in that there must be extra or less Electronics fastened to the GSM version. If you would have to slam it into your CDMA formed case, then that would absolutely defeat the purpose of having a 4 gigabyte RAM Qualcomm awesome processor $550 phone. From what I hear however, all of the Note 5 series phones are capable of transmitting and receiving all frequencies, CDMA and GSM. Of course the n920p than I have focuses on wcdma bands and LTE bands. As a matter of fact I can't even get it to work on a GSM carrier, even though I've spent at least $50 and 15 hours trying to get it unlocked to do so. And I agree with what you had stated at the beginning, if there is a place to find the answer than this would be it. So why don't want to view phone know every damn thing all people please let us know, can I put a T-Mobile motherboard from a note 5 inside of my Note 5 that I got from Sprint? Thank you. And I will go ahead and let you know I have done the conversion over to n920p I, I think I currently am running a firmware from Pakistan or maybe Uganda. The phone is quite simple to root even at the 7.0 level firmware, I've changed the IMEI, I can change the location to make it appear that I'm in Paris France and Dallas Texas at the same time, but I can't get the thing to run on a GSM frequency and a carrier that's based here in the US.