Database Info

Tweak the radio?

Is there a way to tweak the Captivate radio to switch between the 850 MHz band and the 900 MHz band or turn it into a quad band UMTS handset that can be used as a world phone?

no. If you want the 900 band, get the Vibrant

ua549 said:
Is there a way to tweak the Captivate radio to switch between the 850 MHz band and the 900 MHz band or turn it into a quad band UMTS handset that can be used as a world phone?
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What part of the world would I need 850 that doesn't have a carrier on one of the other 3 bands?

850 is where most iDen phones operate - hence you would need 850 in markets where the operator owns "850" and plans to re-deploy. Lower frequencies yield better coverage and iDen usage is declining.

alphadog00 said:
What part of the world would I need 850 that doesn't have a carrier on one of the other 3 bands?
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North America! There are many places in the US and Canada where 850 MHZ UMTS is all that is available. AT&T is migrating UMTS from the 1900 band to the 850 band. Venezuela requires the 900 MHz band and Europe is moving in that direction as well. Right now I carry two handsets when away from home.

Costa Rica 850 only for 3g...

[Q] Does Infuse support Band 2100 MHz？

I am not in USA. I wanna know if Infuse support Band 2100 MHz(WCDMA)？Thanks！

Here's a link showing technical specs, including supported bands:
http://www.phonearena.com/phones/Samsung-Infuse-4G_id5119

Isn't 2100mhz T-Mobile's AWS band?
Sent from my Samsung Infuse 4G

Yes, the Infuse 4G supports the 2100 MHz band. It is the band for international use.
On the other hand, the T-Mobile AWS band uses 1700 and 2100 MHz together, which does not apply to this phone.

yes, I have has mine run on 850, 1900, and 2100. dialpad *#0011# shows current freq

Chinese phones on T-Mobile?

Hi guys,
I'm hoping someone can give me a for sure answer on this. I have a company we met at CES offering me some chinese cell phones. Basically they are an S4 knock off. I have definitely decided against selling these, but since I have a really old phone... I'm thinking about buying one for myself to play with.
I am currently on the t-Mobile network. Here is what their website says about "bands"
T-Mobile's UMTS network operates in Band IV, which uses 1700 MHz and 2100 MHz frequencies. Specifically, T-Mobile uses the 1700 MHz frequency to send information to cell sites and then uses the 2100 MHz frequency to receive information. A device must be able to use both frequencies to use T-Mobile's domestic UMTS network.
Most international UMTS networks operate in Band I, which uses the 2100 MHz frequency.
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and here is the information about the phone:
MS mode: WCDMA/GSM
Frquency band: WCDMA 2100/850 (HSDPA) and GSM 850/900/1800/1900
Wireless transmission: 3G, WIFI 802.11b/g/n, Bluetooth 2.0, EDGE, HSDPA, HSUPA,
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Everything sounds like it should work, but the concern is the 850/2100 on WCDMA. T-Mobile claims it uses 1700/2100.
For comparison, here is the t-Mobile Nexus 4
GSM:850, 900, 1800, 1900 MHz
UMTS: 850, 900, 1700/2100, 1900, 2100 MHz
Data:HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS, EDGE, GPRS
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I do understand that the chinese phone is only 3G, and the Nexus I compare to is 4G.

According to what I just read on another tmousa page (which agrees with your quote) their data (3g, 4g, and lte) all work on 1700/2100 as of this date of posting.
From your quote about your phone, it operates on gsm 1800/1900. That does not match with tmo.
I know you probably already figured this out, but I am searching on same subject, so others will follow.
Blessings!

Support for 900 & 2100 mhz (3g) ?

Does the relay 4G use the 900 and the 2100 mhz bands ?
Some sites day it does, other say it doesn't.

robuser007 said:
Does the relay 4G use the 900 and the 2100 mhz bands ?
Some sites day it does, other say it doesn't.
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if you're asking if it works for hspa outside of US yes, it does. apparently wcdma is 2100mhz everywhere but in the US

I'm just wondering if 900 Mhz does also work (the phone has it?)

[Completed] Some help with bands please

I got a V19 phone from china with Android 5.0. I believe it is a rooted phone, I've seen some of those features. It came in a box that says Android. I have no idea of the manufacturer.
Problem: I cant get the data connection (tmobile, wifi works fine) to get better than the edge network, 2G. I've learned that T-Mobile requires these bands:
LTE Frequencies:
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2 (in refarmed areas)
Lower 700 MHz band 12 (in development) / in service in selected areas
3G/4G Frequencies (WCDMA):
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2 (in refarmed areas)
2G Frequencies (GSM/GPRS/EDGE):
1900 MHz PCS band 2
Inside the battery area the phone lists :
GSM 850/900/1800/1900mhz
WCDMA 850/2100mhz (HA)
When I got to engineering mode, I can see other bands that are greyed out.
So my question is this. Is it possible to slick this phone and install software, etc, that allows the bands I need? Or are 'Bands" hard coded into the hardware of the phone? Easier to just buy another phone with correct bands? Advice or links?
Thanks,
Gary B.

Kimchoc said:
I got a V19 phone from china with Android 5.0. I believe it is a rooted phone, I've seen some of those features. It came in a box that says Android. I have no idea of the manufacturer.
Problem: I cant get the data connection (tmobile, wifi works fine) to get better than the edge network, 2G. I've learned that T-Mobile requires these bands:
LTE Frequencies:
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2 (in refarmed areas)
Lower 700 MHz band 12 (in development) / in service in selected areas
3G/4G Frequencies (WCDMA):
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2 (in refarmed areas)
2G Frequencies (GSM/GPRS/EDGE):
1900 MHz PCS band 2
Inside the battery area the phone lists :
GSM 850/900/1800/1900mhz
WCDMA 850/2100mhz (HA)
When I got to engineering mode, I can see other bands that are greyed out.
So my question is this. Is it possible to slick this phone and install software, etc, that allows the bands I need? Or are 'Bands" hard coded into the hardware of the phone? Easier to just buy another phone with correct bands? Advice or links?
Thanks,
Gary B.
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Hello,
Thanks for using XDA Assist.
There's no dedicated forum for your device here in XDA.You can post your query in Android Q&A,Help and Troubleshooting.Experts there may be able to help you
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