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Hi, does anybody know if the Gratia and Aria covers are interchangeable?
My wife has an Aria and is happy with it. I was thinking of getting a Gratia, but swapping cases so that she can have a white one on her Aria.
Given the antenna is in the cover and the phones are for different markets I wondering if the antennae might be different? Does anyone know for sure if they are interchangeable?
Thanks
I'm not 100% positive the covers are interchangeable, but I think they are. However, they aren't both compatible with the same wireless networks. You can use them both, but the Gratia won't be 3G in the U.S. because it utilizes different frequencies. It will still get data, but it will be at EDGE speeds.
Yes I realise the phones are for different markets and operate at different frequencies but I'm wondering if that means the antennae are actually different.
I noticed Expansys USA has the Gratia cover listed under accessories for the Aria,
But then what they quote for the Gratia "Mfr Part #:" is 74H01655-11M, whereas HD-Mini is 74H01655-02M (nothing listed for Aria, but I think it is also 74H01655-02M)
I'm only really interested in data in the UK on both devices, as I prefer not to pay bucket loads to the phone company when roaming, but my wife wants a white phone!
There are countless innovations of technology nowadays. There’s a fast pace of technology development even on phones. Some finest innovations of phones today are aria phones from LG and cordless phones. People keep on inventing gadgets on how to make life easier.
Doesn't the antenna just collect the signal? Surely whether it will work on a particular frequency is determined by the radio hardware in the device?
I'm just thinking - an antenna is an antenna isn't it? Same way you can use a coat hanger to pick up FM or even TV transmissions, it's all just about capturing the radio waves right?
I could be miles off base here but I honestly would have thought that the antenna that's built in to the back cover would NOT be specific to a particular GSM frequency.
Would love to know for sure though.
woodbane said:
Doesn't the antenna just collect the signal? Surely whether it will work on a particular frequency is determined by the radio hardware in the device?
I'm just thinking - an antenna is an antenna isn't it? Same way you can use a coat hanger to pick up FM or even TV transmissions, it's all just about capturing the radio waves right?
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AFAIK, right. If the contacts are in the same place the cover should work quite well.
woodbane said:
Doesn't the antenna just collect the signal? Surely whether it will work on a particular frequency is determined by the radio hardware in the device?
I'm just thinking - an antenna is an antenna isn't it? Same way you can use a coat hanger to pick up FM or even TV transmissions, it's all just about capturing the radio waves right?
I could be miles off base here but I honestly would have thought that the antenna that's built in to the back cover would NOT be specific to a particular GSM frequency.
Would love to know for sure though.
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That's technically not true - GSM antennae are most certainly tuned for particular frequencies - if you look online, you'll see different ones with different specifications, like 850 thru 900, or 1800 or 1900. However, through some trickery, a single antenna can be tuned for more than one frequency at a time.
That being said, I have no idea what the antenna in the back of the Aria or Gratia are tuned for - it's possible they might be dual band specific to the carrier (ATT 850/1900 or Euro 900/2100) or it might be a universal one capable of picking up all 4 or more frequencies.
I'd say best bet is to get one of the other ones, try it out and see. And let us know - I'd considered getting a green one for use in the US...
johdaxx said:
That's technically not true - GSM antennae are most certainly tuned for particular frequencies - if you look online, you'll see different ones with different specifications, like 850 thru 900, or 1800 or 1900. However, through some trickery, a single antenna can be tuned for more than one frequency at a time.
That being said, I have no idea what the antenna in the back of the Aria or Gratia are tuned for - it's possible they might be dual band specific to the carrier (ATT 850/1900 or Euro 900/2100) or it might be a universal one capable of picking up all 4 or more frequencies.
I'd say best bet is to get one of the other ones, try it out and see. And let us know - I'd considered getting a green one for use in the US...
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I hear what you are saying but I think people are confusing the antenna with the GSM radio built in to the phone.
Whether a phone utilizes 850/1900 or 1900/2100 bands would surely be a funtion of the radio in the phone that is hard coded to those frequencies.
Isn't an antenna just "fishing net' that actually gathers the signal?
Again, could be miles off base here, just applying my own brand of common sense.
woodbane said:
Doesn't the antenna just collect the signal? Surely whether it will work on a particular frequency is determined by the radio hardware in the device?
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It really depends on how the antenna was designed. Resonant frequencies are generally a factor...so antenna length could matter. Polarization and radiation patterns are also taken into consideration.
That said, until one has both covers (or finds some internal design docs), it's hard to know if there is any difference.
woodbane said:
I hear what you are saying but I think people are confusing the antenna with the GSM radio built in to the phone.
Whether a phone utilizes 850/1900 or 1900/2100 bands would surely be a funtion of the radio in the phone that is hard coded to those frequencies.
Isn't an antenna just "fishing net' that actually gathers the signal?
Again, could be miles off base here, just applying my own brand of common sense.
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Unfortunately, common sense doesn't really apply when it comes to signal theory.
I'm not an expert by any means, but from what I remember from a signals course I took a few years ago in college, johdaxx's and M1m3R's posts are both spot on.
johdaxx said:
That's technically not true - GSM antennae are most certainly tuned for particular frequencies
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Both the Aria and the Gratia work for the 4 bands of GSM, so there's really no problem if such tunning was a factor to consider.
The quality of HTC Support on this was really quite shocking, e.g.
Thank you for contacting HTC regarding the swapping of Back cover. In short to your email. Yes buy [sic] swapping the back plate can have effect on the device's perfomance. Which is why we recommend original products. Mohammed - UK Ireland Support (Tech)
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When challenged he came back with:
"It does not matter which cover goes on because the real difference is the internal components."
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Then...
"I can confirm that the back cover is just a bit of plastic. If the connectors will allow you to plug the new back cover in then it will work." Jason [UK - Ireland Support (Tech)
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When I pointed out there were some metal contacts...
"Those connectors are there so that the phone knows that the back cover is on the phone. It has nothing to do with the signal as the antennas are up the top of the phone. "
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I pointed out HTC's own support website says: "the antenna for the HTC Aria ™ is located in the battery cover."
"There is nothing more we can do, as we will be going in circles regarding this matter." Mohammed (again)
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kc1 said:
The quality of HTC Support on this was really quite shocking, e.g.
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idk man, for me that's the typical quality. I dont expect any help from any large company. For example ask any carrier's seller about batteries, they all gonna say you should fully discharge it before charging, like the old batteries. They know nothing.
But, again, both phones uses the same gsm radio freq. The only real change in hardware is the umts radio freq and I'm pretty sure the covers doesnt change cause of that. Hell, every GSM phone has a different antenna solution and they all work with the same quad band freqs
OK Back to to casing now where can u buy a white back for the HTC Aria and know that it'll work, I would love to have a white back on my Aria...
I would love to get a fluorescent green one.....
Would it ever be possible for Verizon to become a cdma provider? I know nothing about how it works honestly but if its something they could chnagr and keep existing network they could if they'd have to start over obviously not. Just curious since where I live Verizon is the only choice but GSM just beats cdma on many levels. Sorry if this is in the wrong section or if it sounds as dumb as I fear it does.
Sent from my Galaxy Nexus using XDA
No. They're (effectively) never going to drop CDMA. For the foreseeable future they will be using CDMA as a legacy fallback network. Eventually they'll push to VoLTE (Voice over LTE) and start to phase out sales of new CDMA devices, but that's far into the future. They still have to support millions of legacy CDMA devices.
Verizon is too large with too big of a user base to pivot to GSM. Honestly at this point even if they wanted to (they don't), it wouldn't be worth the time and effort considering they're pushing LTE as their next network technology. It'd just be a complete waste of time.
Damn. Reading about all the new nexus devices being only cdma has me hating where I live as T-Mobile or att would have no service 90% of the time.
Sent from my Galaxy Nexus using XDA
Verizon is switching to GSM since they are moving to lte and the lte voice. They'll never go backwards to hspa though, and they likely will keep their cdma network for more than 5 years.
Notice new Verizon phones have sim cards?
RogerPodacter said:
Verizon is switching to GSM since they are moving to lte and the lte voice. They'll never go backwards to hspa though, and they likely will keep their cdma network for more than 5 years.
Notice new Verizon phones have sim cards?
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Ya isn't lte the GSM type tech and umb or whatever its called was the cdma technology.
I was reading that vodafone (one of the biggest carriers in the world, GSM, has stock in verizon) and Verizon decided together that lte was the future instead of the cdma version.
Even with the switch to LTE, Verizon's LTE operates in the 700MHz band, which none of the GSM/LTE networks will be compatible with. The result will in all likelihood be two separate LTE networks.
With the investment that Verizon already has in their 700MHz equipment, it is highly unlikely for them to make a switch.
Sent from my Galaxy Nexus using XDA
cslester said:
Even with the switch to LTE, Verizon's LTE operates in the 700MHz band, which none of the GSM/LTE networks will be compatible with. The result will in all likelihood be two separate LTE networks.
With the investment that Verizon already has in their 700MHz equipment, it is highly unlikely for them to make a switch.
Sent from my Galaxy Nexus using XDA
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ATT is 700mhz as well.
Cdma keeps connection when traveling between towers much more reliably as well.
Sent from my Galaxy Nexus using xda premium
adrynalyne said:
ATT is 700mhz as well.
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But different "parts" of 700mhz.
I don't know whether or not cell phone providers actually do this, (I'm not terribly familiar with how they work) but you can fit multiple carrier signals into the same frequency by adjusting the phase and polarity.
I know satellite providers do this. The even transponders use linear polarity (modulating based on variable strength of the signal,) and the odd ones use circular polarity (modulating based on the directional vector at a given point in time.) In addition to that (and I don't think satellite providers do this yet) you can add a second linear modulation with a phase shift of 90 degrees to add yet another carrier signal.
adrynalyne said:
ATT is 700mhz as well.
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Yeah, AT&T uses A & B blocks in lower 700MHz. VZW is C-Block Upper 700MHz. While you could probably make an LTE radio that combines the Lower A, B and C (lower C =! upper C), getting all four bands to play nice is going to be very difficult.
blackhand1001 said:
Cdma keeps connection when traveling between towers much more reliably as well.
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So does GSM, as long as it's operating in UMTS mode (which it will, unless you're making a voice call on T-Mobile from an airboat 5 miles south of Alligator Alley (I-75) in the middle of the Florida Everglades & barely have a viable signal to begin with, in which case it will fall back to legacy TDMA-based 1G GSM).
I know satellite providers do this. The even transponders use linear polarity (modulating based on variable strength of the signal,) and the odd ones use circular polarity (modulating based on the directional vector at a given point in time.) In addition to that (and I don't think satellite providers do this yet) you can add a second linear modulation with a phase shift of 90 degrees to add yet another carrier signal.
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They could... except then your phone would only work when uplinked & downlinked through a fixed, securely-mounted antenna. Doppler shift does terrible things to phase-based modulation. Just ask anybody who's ever tried to watch an 8VSB-modulated ATSC TV transmission during a hurricane (when the transmission antenna is wobbling) or from a moving vehicle. In theory, there are exotic antenna designs that can untangle polarized signals while moving by simultaneously receiving multiple phases & using a DSP to separate them out "after the fact", but they're *way* out of the current realm of viability for mass-market consumer electronics, and WAY more demanding than a 2" metal stub embedded inside your phone.
Truth be told, spectrum isn't the problem. Tower density is. The nice thing about CDMA is that you can literally fix almost any bandwidth problem just by throwing more tower sites at it & letting the network sort itself out like magic. CDMA has very few "hard" limits. Some, like 1.25MHz or 5MHz channel pairs, are carved in stone and can't be engineered around. Once you're in the club and own the spectrum, though, it's really just a question of "what kind of tower density are you willing to pay for. Crowded mall? Give it its own cell. More-crowded mall? Spread a dozen picocells around it, especially the food court.
Verizon is unlikely to ever support legacy GSM or UMTS directly, and can really only evolve into LTE going forward. Sprint could, in theory, buy T-Mobile, and instantly consolidate GSM/UMTS into any cell site where it has deployed Network Vision (~3% of the US, so far) as long as it had the use of T-Mobile's spectrum, with little more than a site visit, software upgrade, and some software reconfiguration. Verizon can't do that, because it ALREADY upgraded its network, and has too much in sunk costs to scrap everything and redo every cell site the way Sprint is (and MUST). Truth be told, Sprint won't do it either unless it merges with T-Mo, and the feds are unlikely to allow it (it's not 100% impossible, but VERY unlikely to happen unless there were simultaneously a merger between US Cellular, MetroPCS, Sprint's "rural" partner networks, and/or Cincinnati Bell (to preserve the status quo Quadropoly).
AT&T and Cingular switched to GSM because they had no meaningful upgrade path from TDMA. In fact, AT&T was actually planning to switch to CDMA until they bought Cingular, and altered their plans only because Cingular was already deploying GSM. In theory, Sprint+Tmo (with the spectrum of both) could semi-gracefully migrate towards GSM with backwards compatibility for CDMA2000 voice and 1xRTT (like Telus did in Canada), but NOBODY could really get away with "flipping a switch" and forcing a wholesale changeover anymore. Hell, Sprint doesn't even have enough Nextel customers left to pay the electric bill for their added tower costs, and the official iDEN sunset is STILL two years away.
Hello!
New user here and well, I was wondering if there's any chance that we'll be able to unlock phone bands in this device!
I also know it's probably still unclear as the phone is still new but another user said in another topic that there might be something considering OPO had some tools to unlock bands! So if anyone knows anything about this issue it'd be great!
I'd love to have B28 available on the OP3!
Thanks!
I'd say the reason of the limited LTE band selection is no other than to reduce costs in the hardware. Every band requires it's own amplifiers so making the devices regional it's an easy way to cut corners and not affecting people much (if they don't travel)
bartolo5 said:
I'd say the reason of the limited LTE band selection is no other than to reduce costs in the hardware. Every band requires it's own amplifiers so making the devices regional it's an easy way to cut corners and not affecting people much (if they don't travel)
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I can understand the reason, but it still seems meh to me.
But who knows, maybe there will be a workaround!
hey, ive been looking at buying an OP3 but did read that band 28 is missing which is used for faster and longer range 4G in australia and also common in the rest of asia & some of europe
weird, in this teardown it says the radio can do band 28 ? maybe its just disabled/unsupported?
http://www.slashgear.com/oneplus-3-teardown-part-ii-whats-inside-28446199/
So I purchased this phone while in the UK because it looked like a solid item. Unfortunately, I neglected to realize that the default LTE bands were EU and the phone will not work in the US other than on 2G.
In the meantime... I've spent the entire day setting up the appropriate tools to modify the NV values in 6828/29 to enable the appropriate LTE bands (2,4,12) for my carrier here in the US. I've wrote these values successfully, however, no LTE. These are the only two NV values I've modified.
Is this possible? Or is there something I'm missing here and the phone chipset/radio is not configurable in this manner and requires either some other attention, or that I'm screwed.
Thanks for any insight.
Try *#*#4636#*#* which should show you network types available and if your lucky set the one you want
I see that LTE is an option here; but the radio picks nothing up. This phone comes from the factory stamped on the box with LTE bands 3/7/20 enabled.
Perhaps I should rephrase the question:
Does editing the NV values do anything, or is the radio hardware limited to specific frequencies? Or is there a way to flash a ROM or something that's not editable (i.e. via QXDM) to fix this problem? It seems like the chipsets are all the same from phone to phone, so something 'soft' must be limiting the band selection.
I'd hate to have to buy another phone simply for the fact I'm limited to 2G connectivity. I love how the government and cell phone manufacturers have the consumer's best interest in mind.
robin0800 said:
Try *#*#4636#*#* which should show you network types available and if your lucky set the one you want
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rmbanas said:
I see that LTE is an option here; but the radio picks nothing up. This phone comes from the factory stamped on the box with LTE bands 3/7/20 enabled.
Perhaps I should rephrase the question:
Does editing the NV values do anything, or is the radio hardware limited to specific frequencies? Or is there a way to flash a ROM or something that's not editable (i.e. via QXDM) to fix this problem? It seems like the chipsets are all the same from phone to phone, so something 'soft' must be limiting the band selection.
I'd hate to have to buy another phone simply for the fact I'm limited to 2G connectivity. I love how the government and cell phone manufacturers have the consumer's best interest in mind.
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It should be hardware limitation of the chipset. LTE band support can be problematic even on high-end devices (there will be at least one band missing).
If you are in the US, why not take advantage of the Blu R1 HD deal? It's not very helpful but it's something
rmbanas said:
So I purchased this phone while in the UK because it looked like a solid item. Unfortunately, I neglected to realize that the default LTE bands were EU and the phone will not work in the US other than on 2G.
In the meantime... I've spent the entire day setting up the appropriate tools to modify the NV values in 6828/29 to enable the appropriate LTE bands (2,4,12) for my carrier here in the US. I've wrote these values successfully, however, no LTE. These are the only two NV values I've modified.
Is this possible? Or is there something I'm missing here and the phone chipset/radio is not configurable in this manner and requires either some other attention, or that I'm screwed.
Thanks for any insight.
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Hi rmbanas, how do you did it? I followed the guide from here but QPST does not recognize my device. Now Im stuck.
Im speaking from Brazil and Im trying to enable some LTE and GSM bands.
Ive unlocked the bootloader, flashed the CyanogemMod 13, released the developer settings (so as USB debbuging, etc, etc).
Certainly, it is a problem with the drivers, but Ive tried with a lot of them and still... nothing.
Friends now you can lock bands and enjoy speeds. Watch this
https://youtu.be/K-DN0q64lRw
So, you lock to that b40 lte band, but, if it is faster or whatever, why it is not the default one? More to it, I thought that the device chose the best band among the ones available, so, why would locking on just this one is really beneficial? Please elaborate
winol said:
So, you lock to that b40 lte band, but, if it is faster or whatever, why it is not the default one? More to it, I thought that the device chose the best band among the ones available, so, why would locking on just this one is really beneficial? Please elaborate
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because most of the time a particular band is overloaded and other band is free and if we lock to a particular band it will result in good internet speeds and coverage also. Also some people want to disable carrier aggregation as it eats lots of battery so band locking will help
and it works on Qualcomm Snapdragon also
Doesn't this mean you'd have to remember the unlock the band again if moving away from the cellular tower in case the next one doesn't support it, then re locking?, Seems only useful for when sat at home stationary where WiFi is available anyway?, Good find, but seems a little pointless imo!
TheInfiniteAndroid said:
Doesn't this mean you'd have to remember the unlock the band again if moving away from the cellular tower in case the next one doesn't support it, then re locking?, Seems only useful for when sat at home stationary where WiFi is available anyway?, Good find, but seems a little pointless imo!
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Well it is very helpful in India and yes during roaming locking band on the band having long range like preferring band 3 over 40 is useful
Awesome