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Hello,
I'm curious to know is the 3G HSPA 2100/1700 frequency hardware based or software?
For example can one change the frequency to point say at 850MHz?
I'm currently with Rogers, and their 3G network is not on the same band.
Thanks
Nah, its a hardware restriction. Tmobile did this because 2100-1700 are dedicated 3G pipelines. They device does not have 850 or 1900 wcdma only 21-1700
http://www.phonescoop.com/phones/phone.php?p=1763
this is so it can not be used on at&t 3g.
if i remember correctly 1700 is for d/l and 2100 is for u/l
i dont know much about phones....or the various cellphone network types.
But isn't a frequency a frequency? Wouldn't it be the softwares job to interpret the data on the various frequencies?
jrgong420 said:
i dont know much about phones....or the various cellphone network types.
But isn't a frequency a frequency? Wouldn't it be the softwares job to interpret the data on the various frequencies?
Click to expand...
Click to collapse
True, software could interprete the singnal, it just wouldn't be as efficient.
The easiest comparison I could make would be video enconding on a PC. You can have your PC encode a video in h.264 it will just take a while. Meanwhile your HD-DVR is doing the same thing in real time. The difference is the dedicated chip in the HD-DVR that only does h.264 encoding.
I have no idea if there's a way to get the raw signal from one of the other radios, let alone if there's enough power in the G1 to interpret it without the chip. I'd guess not on both cases.
benmyers2941 said:
The easiest comparison I could make would be video enconding on a PC. You can have your PC encode a video in h.264 it will just take a while. Meanwhile your HD-DVR is doing the same thing in real time. The difference is the dedicated chip in the HD-DVR that only does h.264 encoding.
Click to expand...
Click to collapse
Nice comparison... but I think it is more like a wireless router. A 802.11b router can't use 802.11g... why not they run on the same frequency? Because it isn't just the frequency you have to look at. G takes a different amount of power than B. Same with the different bands. 2100 take a different amount than 850.
If you really want to see a comparison wiki radio frequencies and you will see why cb radios and those little walkie talkies don't work on all frequencies too. There is a lot more to it than just telling the radio to go up or down a couple numbers.
Nope
Qualcomm 7201 Chipset and Baseband is fully Compatible with 850 / 1700 / 2100 / 1900 Bands
You just have to have additional Component on the Board to have additional Support
Please see the motherboard Diagram its Self Sufficient i think.
hetaldp said:
Nope
Qualcomm 7201 Chipset and Baseband is fully Compatible with 850 / 1700 / 2100 / 1900 Bands
You just have to have additional Component on the Board to have additional Support
Please see the motherboard Diagram its Self Sufficient i think.
Click to expand...
Click to collapse
I thought it was GSM 850 / GSM 900 / GSM 1800 / GSM 1900 WCDMA 1700 / WCDMA 2100
Is GSM 850 the same as WCDMA 850?
But it looks like you answered two questions with that post... someone else was looking for pics of the phones insides. Good job finding those.
Its all hardware based and will not work on at&t 3G. The phone does not have the hardware to pick up 850/1900mhz frequency. Tmobile did this not to screw people over but because they have no need to. The phone was made for T-mobile there is no reason to support at&t bands.
Just like everyone said, it is a hardware thing. As far as I know, since T-Mobile got the short straw and got the 1700MHz band, there really isn't a "universal" phone now that can operate on all GSM and all 3G frequencies worldwide yet. Manufacturers would have to have like 9 total bands supported and with the trend towards smaller and smaller phones, it's something that gets cut early. So the short of it is this: expecting the G1 to work on AT&T's 3G band is a lot like expecting an FM-only radio to pick up AM signals.....or exactly like expecting an American FM radio to pick up all the FM stations in Japan (which uses a wider FM band.)
But keep in mind that the 1700/2100 numbers don't refer to a specific frequency, but a band of frequencies at or around the number. If you've ever used a shortwave radio, you know that they use terms like "the 11-meter band," which is a range of frequencies with a wavelength of around 11m. Luckily, the range of the 2100MHz band that T-Mobile USA uses overlaps the European band enough to make the phone work over there.
Doesn't the tilt do 1700?
neoobs said:
Doesn't the tilt do 1700?
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Click to collapse
If I'm not mistaken, the Tilt was released before the 1700MHz band was a reality.
beartard said:
If I'm not mistaken, the Tilt was released before the 1700MHz band was a reality.
Click to expand...
Click to collapse
You are correct... I remember reading on AT&T thou that it was 1700... but then again we all know how well the cell phone companies advertise specs LOL
Something Interesting...
I found something that might be of interest... If you install "Any Cut" and create a link for "Phone Info" (Long press on you desktop, then > Shortcut > Any Cut > Activity> Phone Info). Once created, you will have a shortcut on your desktop for "Phone Info". Click the "Phone Info" Shortcut and press the menu key. Then click the menu option "Select radio b..." From here you will have the option to change your radio band:
Set GSM/UMTS band:
Automatic
EURO Band
USA Band
Japan Band
AUS Band
AUS2 Band
This would suggest to me that the radio can be controlled via software. What do the experts think? Do you think we could get 3G working on AT&T's Network?
mistadman said:
I found something that might be of interest... If you install "Any Cut" and create a link for "Phone Info" (Long press on you desktop, then > Shortcut > Any Cut > Activity> Phone Info). Once created, you will have a shortcut on your desktop for "Phone Info". Click the "Phone Info" Shortcut and press the menu key. Then click the menu option "Select radio b..." From here you will have the option to change your radio band:
Set GSM/UMTS band:
Automatic
EURO Band
USA Band
Japan Band
AUS Band
AUS2 Band
This would suggest to me that the radio can be controlled via software. What do the experts think? Do you think we could get 3G working on AT&T's Network?
Click to expand...
Click to collapse
You try it and tell us if any of them work LOL... I think it all depends on the hardware first... Remember the android is built to be on many phones
:-(
neoobs said:
You try it and tell us if any of them work LOL... I think it all depends on the hardware first... Remember the android is built to be on many phones
Click to expand...
Click to collapse
My phone is locked. I can't use my AT&T SIM. Sorry. But when I switch to different bands, I do loose my signal until I switch back.
I have a friend who builds small electronic devices. If I had a damaged tilt would it be possible to remove the 3G antenna and a few resistors and replace the ones in the G1 to make it work on the ATT 3G bands?
Does anyone know enough about the board construction to know what would need to be replaced?
I did use that activity to change the band to get it to work with my provider here in the United Arab Emirates. The thing is I honestly don't know what they are using, publishing reliable info is not a strong point of the operators around here. I grabbed that of a web-site:
The Middle East operators are using the primary 2.1 GHz band for the UMTS/HSDPA operation. Not too precise eh.
I used the Japan labeled band.(?)
sim unlock GI via 611
I was on the horn with CS anyway and figured it would be worth a try to ask for an unlock code request for my G1, they dont have the magic keygens at the Tmob secret base, they have to request it from the OEM, back in the day they gave them out but after many public keygens they got a bit pickier about who get the keys to the liquor cabnet.
when mine comes Ill get an at&T prepay bump sim and mess about a bit just to prove it wont work, and to everybody else ...CALL 611!! ask them for the unlock code tell um you go back and forth to Europe or Iraq or Pagopago, I may not be necessarry but I always have a bit of fun with the story, it used to be a email system send imei to "[email protected]" and get your code in a few days, the good ole dayz
bhang
mistadman said:
I found something that might be of interest... If you install "Any Cut" and create a link for "Phone Info" (Long press on you desktop, then > Shortcut > Any Cut > Activity> Phone Info). Once created, you will have a shortcut on your desktop for "Phone Info". Click the "Phone Info" Shortcut and press the menu key. Then click the menu option "Select radio b..." From here you will have the option to change your radio band:
Set GSM/UMTS band:
Automatic
EURO Band
USA Band
Japan Band
AUS Band
AUS2 Band
This would suggest to me that the radio can be controlled via software. What do the experts think? Do you think we could get 3G working on AT&T's Network?
Click to expand...
Click to collapse
The Menu is shown as the Chipset Qualcomm 7201 actually supports These Bands, But it Require Radio RF/TS Unit to Actually Push Radio Frequcny via Internal antenna. Seeing the Board Picture it only have 1700 and 2100 RF Units. So even is Chipset is compatible it can not Push the Signal or Received Signal other then it is made for. I think in Future then can alter some Hardware and make it more compatible.
So, I'm wondering if I had a broken tilt with the 850 transmit antenna chip in it if I could have that antenna module removed and put in the G1 would that be all that is needed to work on the ATT 3G network?
Anybody, know if that might work since the chipset seems to support the frequency?
I can't afford to pay more than $175 for my phone. I'm a long time ATT customer and can't/won't change carriers. So, I'm trying to get one off of Craigslist or Ebay for about $250.00 or $275.00.
If anyone knows where I can get one for that price please let me know. If I can get one I'll try the antenna replacement idea.
On my Captivate, I could customize the radio to remove and add bands. Is there a way to do this on the Inspire? I live in an area where we have so many towers that even though I'm considered in the "best" coverage zone, my phone rapidly hops towers. Setting my Captivate to use the 1900 band only eliminated this issue entirely.
I may have to return the phone if I can't do this because I constantly drop calls and data. The worst is when I am on a phone call - it will go from HSPA to EDGE and then the data connection icon disappears entirely until I get off the phone and/or the call drops - my Captivate did this as well until I set it as 1900 only.
I think one of the custom roms had this option, just can't remember which one. I know one of the desire based roms had a selection setting to force it to one or the other or to set it to automatic.
Sent from my Desire HD using XDA Premium App
stryfe2010 said:
I think one of the custom roms had this option, just can't remember which one. I know one of the desire based roms had a selection setting to force it to one or the other or to set it to automatic.
Sent from my Desire HD using XDA Premium App
Click to expand...
Click to collapse
I would be extremely interested in this. I am considering making a post in development about it because seriously, I am sick of trying to make a call and it fails because there is no signal, then I wait 30 seconds and I have full signal, get on the call, and it drops out.
This would be sweet to have, my phone is constantly doing the dame thing.
Sent from my Inspire 4G using XDA Premium App
Jake06 said:
This would be sweet to have, my phone is constantly doing the dame thing.
Sent from my Inspire 4G using XDA Premium App
Click to expand...
Click to collapse
Honestly, its a trade off - on my Captivate, I have to lock it as WCDMA 1900 - which means that when I drive somewhere that DOESN'T have 1900 (pretty rare in Colorado) AND HSDPA or 3G, I can't make a call but switching the band takes all of 5 seconds. I can tell you that 1900 here at home though locks and doesn't let go whereas 850 does. My SIM is currently in my Captivate because I'm going to call them and try to make a case for a microcell again.
On your phone, dial *#*#4636#*#* ...then select "Phone Information"
In this menu, you can change and set several things, including which band you use. This is on EVERY android phone, regardless of the ROM. You change these settings at your own risk.
EtherealRemnant said:
I would be extremely interested in this. I am considering making a post in development about it because seriously, I am sick of trying to make a call and it fails because there is no signal, then I wait 30 seconds and I have full signal, get on the call, and it drops out.
Click to expand...
Click to collapse
Don't return it cause of that..! I've already got the 1900/850(wcdma/gsm) toggle in my sense rom, I just haven't included it yet cause I'm working on a 3g/edge toggle as well, and wanted to have both together, but since people want that wcdma/gsm toggle now ill finish it up 100% this weekend hopefully, update my rom with it and post just that by itself so people on other roms can use it as well.
850MHz has WCDMA as well... Setting it to WCDMA/GSM is irrelevant, as you can be on 850 and still on WCDMA.
You have to be able to specify the 1900MHz or 850MHz bands themselves if that is all you want; rather than the auto-switching the phones are supposed to do.
id10terrordfw said:
850MHz has WCDMA as well... Setting it to WCDMA/GSM is irrelevant, as you can be on 850 and still on WCDMA.
You have to be able to specify the 1900MHz or 850MHz bands themselves if that is all you want; rather than the auto-switching the phones are supposed to do.
Click to expand...
Click to collapse
That is exactly what I want. I want to force the 1900 band only. On my Captivate, the only way to do this was to force WCDMA 1900 OR GSM 1900, there was no way to have GSM AND WCDMA 1900 because of how Samsung set up the frequency manager.
I'll try the *#*#4636#*#* mentioned earlier.
The phone doesn't respond to anything I set in *#*#4636#*#* - it automatically reverts back to HSDPA.
I also figured out my problem. Using OpenSignal, I did a tower map. As I thought, I have too many towers. There is one tower that is literally at the top of my block that gives me the worst signal and there are two other towers it connects to - one of them is about 4 blocks away from the other tower and gives me an okay signal and the other one is about a mile away and that gives me the best signal but it doesn't stay locked to any specific tower. Even sitting in the exact same spot, it keeps jumping around.
Oh and you can only select "USA bands", not individual bands from that menu as well
I can only use edge(gsm) 850 band in my office, rest of them don't work.
I used to select it very easily on my captivate using the *#2263#, but there is no such thing on Inspire 4G. Is there anyway to do the same on Inspire 4g??
ravishahuja said:
I can only use edge(gsm) 850 band in my office, rest of them don't work.
I used to select it very easily on my captivate using the *#2263#, but there is no such thing on Inspire 4G. Is there anyway to do the same on Inspire 4g??
Click to expand...
Click to collapse
You mean this?
*#*#4636#*#*
Sent from my calculator
on Captivate i could *#2263# and toggle between bands. GSM/3G or 850/1900.
kirk123 said:
You mean this?
*#*#4636#*#*
Sent from my calculator
Click to expand...
Click to collapse
on Captivate i could *#2263# and toggle between bands. GSM/3G or 850/1900.
On inspire *#2263# doesn't work. I tried *#*#4636#*#* as well. If i try to change bands it again defaults back to WCDMA. I can never switch to GSM bands.
If you live in a major area then its not uncommon to have up to 12 monitored cell sites capable of serving your phone.
I have both bands as well, and here is some info that may be of interest:
In areas that have both, there is a rather seemingly obscure pecking order:
Havoc is caused due to this:
Phone has every band available to it. Great! or, not really.
Here is the election process:
Tower sends out its info on the 850 wcdma carrier announcing as primary.
Tower sends out its SAME info on the 1900 wcdma carrier as secondary.
GSM primary is 1900 for association, 850 for data / voice with roll back to 1900.
The phone sends a limited amount of data to the towers when it hooks up, and in this data is the list of "Ranked" cell site ID's. (WCDMA ONLY, forget GSM for now)
The tower then is aware of what other sites can serve you should it become to busy. Using this and various factors, it will decide to either keep you on sector X primary, bump you to secondary carrier, or dump you completely. If it dumps you completely it is a forced hand off and not a graceful one, and you drop signal completely momentarily and then gain it back, but connect to a different cell id. However, that NEW cell ID only hears you at -104, useable but weak, and has 300 other phones it hears at -80 or better.. It has to pick some one to drop, and it picks you. Start the cycle all over again.
Disabling the 850 band stops this, because 1900 goes far shorter of a range and has far less people using it typically.. therefore the stronger site doesnt drop you because your phone reports no where to go. It also (in the case of the captivate) does not respond to requests to switch to GSM, as it will report no gsm availability when in forced wcdma mode.
Fundamentally, this is a misconfiguration on AT&T's part, since this little scenario shouldnt happen with proper sector alignment and tilting.
You did mention that you are in colorado, and AT&T has absolutely NO idea how to deal with radio towers and mountains. They seem to forget that not the entire world is flat.
If it is an option, I'd recommend a switch to Verizon, as it is unlikely this particular problem will ever go away.
Also, as to a Micro-Cell, know going in that those little buggers get the lowest possible priority.. meaning that if your phone can hear a real tower, its going to use that first. You'll have to fight it to get it on the m-cell.
Also, all Micro-Cell's are WCDMA 850 only, with no GSM or WCDMA 1900.
They also do not use HSPA, but instead use older UMTS technology (Who really cares at this point, if you are in range of a M-Cell you can use wifi.)
Other option: Disable 3G for the area you would use the M-Cell.
GSM shouldnt give the same problem WCDMA gives. The entire election process is completely different, and frankly works better than the WCDMA deployment AT&T used.
EDIT:
Wow sorry I didnt read the dates else I would have known this thread was a corpse. Found it looking for a WCDMA 1900 inspire lock option.
is there anyway to fix the 3g network band for nexus s,
in galaxy s i9000 i was using *#2263# to change the freq. band...anyone know any code or any app to check or to modify the frequency band?
or any radio support 900 HSPA?
my phone is i9020t
You can't change the frequency bands your phone uses via software. The only way to do it, is buy a broken phone, and use that phones guts (insides) in your device. Pending of course that the broken phone uses the frequency that you need.
Btw, wrong section. This should be in the q&a
Or some mad solder skills.
Not sure if it supports the 900Mhz band though.
Sent from my albino Nexus S
*#*#4636#*#* you can set your radio to 2G+3G, 2G and 3G (with preference). You can set your bands based on your geographical location. See for yourself. I think the AWS nexus S supports 900/1700/2100 doesn't it?
Sent from my GT-I9100 using Tapatalk
Moved to proper forum, please post in the correct forums.
Just out of curiosity for my roommate here with me in Qatar, I have a question... I don't think it's even possible but I told him I would do some research. Is there a way to make the inspire 4G pick up quad band umts like my incredible 2 does? For instance like flashing a different radio? Thanks for any feedback
Sent from my skyraider Incredible 2 using xda premium
Without trying to be too short, no.
Android's Radio Interface Layer (RIL) provides an abstraction layer between Android telephony services (android.telephony) and radio hardware. The RIL is radio agnostic, and includes support for Global System for Mobile communication (GSM)-based radios.
The Android radio interface is radio-agnostic and the Vendor RIL can use any protocol to communicate with the radio. Android provides a reference Vendor RIL, using the Hayes AT command set, that you can use as a quick start for telephony testing and a guide for commercial vendor RILs
A signal at baseband is often used to modulate a higher frequency carrier wave in order that it may be transmitted via radio. Modulation results in shifting the signal up to much higher frequencies (radio frequencies, or RF) than it originally spanned. A key consequence of the usual double-sideband amplitude modulation (AM) is that, usually, the range of frequencies the signal spans (its spectral bandwidth) is doubled
The simplest definition is that a signal's baseband bandwidth is its bandwidth before modulation and multiplexing
SO I guess HD DESIRE HD listens to 2100 band FOR 3G
while HTC INSPIRE 1900 BAND FOR 3G
AND 3G IN INDIA HAS 2100 BAND
So i guess it should make things work
Im not sure about everything.
Waiting for adminsitrators and senior members to correct me
Agoattamer said:
Without trying to be too short, no.
Click to expand...
Click to collapse
It is a hardware thing. No genius explanation needs to be given. And Inspire 4G/Telus Desire HD is HSDPA 850 / 1900. European/Asain Desire HD is HSDPA 900 / 2100.
Agoattamer said:
It is a hardware thing. No genius explanation needs to be given. And Inspire 4G/Telus Desire HD is HSDPA 850 / 1900. European/Asain Desire HD is HSDPA 900 / 2100.
Click to expand...
Click to collapse
I figured as much so but developers do some awesome things. Didn't know if maybe a port could be made from the DHD to the Inspire.
Sent from my skyraider Incredible 2 using xda premium
xM Minton Mx said:
I figured as much so but developers do some awesome things. Didn't know if maybe a port could be made from the DHD to the Inspire.
Sent from my skyraider Incredible 2 using xda premium
Click to expand...
Click to collapse
Waiting for senior developers to correct me,
Im not at all sure.
xM Minton Mx said:
I figured as much so but developers do some awesome things. Didn't know if maybe a port could be made from the DHD to the Inspire.
Sent from my skyraider Incredible 2 using xda premium
Click to expand...
Click to collapse
You can't port hardware.
Hi Guys,
So I've been running Clean Rom for roughly 6 months now, still running version 5.1 (Android Version 4.0.4) on my HTC ONE XL.
My One XL is a Telstra branded phone and thus has the capability for 850MHz. I was running on the Vodafone network and therefore not using said band, however I have recently swapped over to Telstra (Was never with them in the first place).
Unfortunately I'm not seeing the gains in reception I was hoping for, and I am currently finding that when going to locations where there should be signal, albeit edge, crappy signal, I am receiving none. My question is, does Clean Rom disable the 850MHz frequency or does it still support it? Is there a way I can check whether I am accessing the 850MHz network, and if so, how? If it isn't am I able to turn on th 850MHz frequency?
Looking forward to getting this sorted. Cheers.
ROM shouldn't make much difference in band compatibility. Since your version supports 850 MHz for both 2G (EDGE) and 3G, it should work regardless of ROM, and you don't need to "turn it on". There are "secret codes" you can enter into the dialer that will tell you information about the bands, and also signal strength. Just use the XDA search function, and you should be able to find them.
You might see some slight improvement if you are not currently on a Jellybean radio, and flash one (if hboot 2.14 or higher, you will need to s-off). But I wouldn't bet on it making a huge difference.
What makes you think you should have (crappy) reception in the mentioned locations? From reception on another phone? Every phone is different (antenna design, etc.). Since you mentioned the reception at the location is already crappy, its probably more of a antenna issue than a ROM issue.
redpoint73 said:
ROM shouldn't make much difference in band compatibility. Since your version supports 850 MHz for both 2G (EDGE) and 3G, it should work regardless of ROM, and you don't need to "turn it on". There are "secret codes" you can enter into the dialer that will tell you information about the bands, and also signal strength. Just use the XDA search function, and you should be able to find them.
You might see some slight improvement if you are not currently on a Jellybean radio, and flash one (if hboot 2.14 or higher, you will need to s-off). But I wouldn't bet on it making a huge difference.
What makes you think you should have (crappy) reception in the mentioned locations? From reception on another phone? Every phone is different (antenna design, etc.). Since you mentioned the reception at the location is already crappy, its probably more of a antenna issue than a ROM issue.
Click to expand...
Click to collapse
I'm not sure where you're located, Telstra is the largest Telco in Australia with the largest and best coverage. Vodafone unfortunately has a very bad reputation for reception. Swapping from Vodafone which does not use an 850MHz band to Telstra, which does, has netted me reverse effects. I am receiving worse reception, which should not be the case. If I go into fringe areas where edge is the best signal you receive, I will receive none, where as in town locations where more than the 850 band is used, I receive okay signal. Just seems like I'm not picking up the 850 band.
As I already mentioned, search for the "secret" dialer codes. There are codes that will tell you the cell tower signal, and I believe band, which sounds like what you need.
None of the dialer codes seem to allow me to see what particular frequency I'm using. Unless I'm just completely missing something? The only thing that seems to provide me with info on the radio only states Network Type and the DBM.