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how do i get my 3g connection to work?

so i bought a unlocked phone on ebay bout a few months from now. i live in canada, also im in rogers network and everything works fine except my connection. i can only go 2g/edge speed but not 3g!! i have a t-mobile phone unlocked.. anybody know what i can do to get a 3g connection? do i need to install a new image or rom!!!!? please help

You may be out of luck on 3G. To the best of my knowledge, I believe Roger's 3G network runs on the 850 and 1900 MHz bands. However, the G1 runs on T-Mobile's 1700 and 2100 MHz bands. So Edge is the best you'll get (speed-wise).

TaurusBullba said:
You may be out of luck on 3G. To the best of my knowledge, I believe Roger's 3G network runs on the 850 and 1900 MHz bands. However, the G1 runs on T-Mobile's 1700 and 2100 MHz bands. So Edge is the best you'll get (speed-wise).
Click to expand...
Click to collapse
T-Mobile's rollout of UMTS in the US will focus on the 2100/1700 MHz bands, whereas UMTS coverage in Canada is being provided on the 850 MHz band of the Rogers Wireless network. I think 1900 was added later as well.
My HTC HD is edge (2G only). But I use a lot of WiFi when ever possible.

[Q] Change Galaxy S modem to US Frequencies?

No, you'll need to go with a carrier like T-Mobile who support the same frequencies as the international version (I assume, I haven't checked them recently).

T-Mobile has a 2100 MHz band but it's paired with 1700 MHz for AWS so I'm not sure if that would actually work.
The 1900 MHz band would get reception from AT&T, although only in areas where they're using 1900, probably in the city.
That's just for 3G though. If you don't need 3G then T-Mobile and AT&T are both GSM carriers.

you will have 2g coverage with at&t and tmobile, and some 3g with at&t, when you have wcdma 1900 coverage... that's about it

I suck at knowing these radios. But, if you are visiting friends, what you can try to do is borrow their sims from different carriers for 5 minutes and see what works in the area(s) you visit. Just an out of the box thought.

AT&T is using 850/1900MHz 3G/UMTS bands (if i'm not mistaken),
i9000 international version supports 3G/UMTS 900/1900/2100 MHz, 850MHz not included.
so I think you are not able to use the 3G network, but the GSM should be working find although it's much slower.

Yup
That's why us USA folks have to wait for either a USA or Australian Variant of the device.

Thanks a lot for all your replies! I was hoping Samsung would be lazy and build the same radio in all of it's devices. Guess I was wrong. Still, thanks a lot, I'll see how well it works with 2G.

Is there still no way to change the UMTS band on European Galaxies so they work in the US?

Nope. You would have to hardware mod the phone.

They already do on 1900 att and thats that
quaker5567 said:
Is there still no way to change the UMTS band on European Galaxies so they work in the US?
Click to expand...
Click to collapse
Sent from my i9000M

I know this is an old thread, but I was looking for information about what modems are for what phones and came across it and thought that as an AT&T customer, I should clarify some information.
Most of AT&T 3G network uses 1900 MHz. AT&T is also "overlaying" 850 MHz over their existing 1900 MHz to increase capacity. There may be some 850 MHz only locations, but I am not aware of any. For the most part, if your phone supports UMTS1900, you should be able to get 3G anywhere that AT&T's map shows 3G availability.

nkrick said:
I know this is an old thread, but I was looking for information about what modems are for what phones and came across it and thought that as an AT&T customer, I should clarify some information.
Most of AT&T 3G network uses 1900 MHz. AT&T is also "overlaying" 850 MHz over their existing 1900 MHz to increase capacity. There may be some 850 MHz only locations, but I am not aware of any. For the most part, if your phone supports UMTS1900, you should be able to get 3G anywhere that AT&T's map shows 3G availability.
Click to expand...
Click to collapse
if you bought a i9000m from canada. you can use UGKC1 or UGJL2 modem to enable 850
im currently on at&t using i9000m with ZSJPG modem with 850mhz enabled

Just 1900Mhz isn't all that great, kinda slow and spotty. Don't get me wrong, it's usable, but 850 is significantly faster/better at least where I live.
I have an I9000M but occasionally use a modem without 850, and it's not as good.
While there are roundabout ways to get 850 on other modems, I usually use one of the Bell ones like JL2 or KC1.

I am using jl2. kc1 did not work reliably with my microcell and would instead keep trying to pull in weak signal thus sucking battery. As for 850mhz only.. most of the I93 corridor on new England is 850mhz only.
Sent from my GT-I9000 using Tapatalk

Frostshock said:
T-Mobile has a 2100 MHz band but it's paired with 1700 MHz for AWS so I'm not sure if that would actually work.
Click to expand...
Click to collapse
It's not paired. It's a single band that uses 1700 MHz for upload and 2100 MHz for download. Just like the international 2100 Mhz band uses 2100 MHz for download and 1900 MHz for upload.
http://en.wikipedia.org/wiki/UMTS_frequency_bands

So just to clarify, my stock i9000m, running 2.3.3 and UGKG3 will get 3G in southern California on both the 850 and 1900 bands? UGKG3 can use both bands?
Sent from my GT-I9000M using xda premium

XT862 900 MHz 3g bandhello,

900 and the 1700 MHHello, this is my first post, an uncle gift to me a droid 3, i already root it and do a lot of things, is a great phone, but in my country, my network use the 900 MHz band to 3g connection, obviustly my phone is from the US, from verizon, so my phone got the US bands (850/1900/2100) as you should know, so, i was believing if there is some way to change a band to use 900 instead of, for example 850, my local network use the 900 and the 1700 mhz bands, i don't know if that bands are hardware or software, but if there is any possibility i really will thanks any help of answer
Pd: and of course i'm making this thread because my phone just take up to E, i know that is capeable to reach H, but i don't want to change my network provider

RAZR I mhz

I have a supposedly "unlocked", RAZR i , however it won't work on any network other than T-Mobile. I've been told T-Mobile UK Motorola Razr I supports T-Mobile UK's network frequency of 1800 mHZ, but, Vodafone, O2 and 3 use an updated 4G network that runs on 1900 & 2100 mHZ. Is this correct and is there any way I can use the phone on the 3 network.
Thanks in advance....
Sent from my HTC Desire using Tapatalk

bl4ckd14mond said:
I have a supposedly "unlocked", RAZR i , however it won't work on any network other than T-Mobile. I've been told T-Mobile UK Motorola Razr I supports T-Mobile UK's network frequency of 1800 mHZ, but, Vodafone, O2 and 3 use an updated 4G network that runs on 1900 & 2100 mHZ. Is this correct and is there any way I can use the phone on the 3 network.
Thanks in advance....
Sent from my HTC Desire using Tapatalk
Click to expand...
Click to collapse
Razr I should work on the following frequencies:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
The device doesn't support 4G. So if the providers can give u 2G or 3G on those freq u can use them.

Is the Droid 4 still a good phone?

Hello
My Desire Z just broke and Im looking for a new phone. The Desire Z is very outdated and underpowered for Lollipop but (in my surprise) I see Cyanogenmod pumping out builds nightly for CM12 for the Droid 4. I thought the bootloader was locked but I see there has been a way around this...
Another thing is the radio. Basically my operator/country uses:
GSM: 900 and 1800 MHz.
3G: 900 and 2100 MHz.
4G/LTE: 800 (March 2015), 1800 MHz and 2600Mhz.
3,5 GHz for WiMAX (IEEE 802.16).
I saw around here there was a patch for GSM. Would this patch work for my country's/operator's frecuencies? I dont think I need 4G as much as I think.
I can get it shipped overseas for 172€ which doesnt seem to bad for the phone (its expensive for a older phone like this but....)

riahc3 said:
Hello
My Desire Z just broke and Im looking for a new phone. The Desire Z is very outdated and underpowered for Lollipop but (in my surprise) I see Cyanogenmod pumping out builds nightly for CM12 for the Droid 4. I thought the bootloader was locked but I see there has been a way around this...
Click to expand...
Click to collapse
Most Motorola devices are bootloader locked, Most motorola devices have custom roms available
even Droid X (Released: July 15, 2010) has Cm11
Another thing is the radio. Basically my operator/country uses:
GSM: 900 and 1800 MHz.
3G: 900 and 2100 MHz.
4G/LTE: 800 (March 2015), 1800 MHz and 2600Mhz.
3,5 GHz for WiMAX (IEEE 802.16).
Click to expand...
Click to collapse
droid 4 radio specs
Technology
GSM / CDMA / HSPA / EVDO / LTE
2G bands CDMA 800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands CDMA2000 1xEV-DO
HSDPA 850 / 900 / 1900 / 2100
4G bands LTE 700 (Band 13)
Speed EV-DO Rev.A 3.1 Mbps, LTE, HSPA
GPRS Class 12
EDGE Class 12
I saw around here there was a patch for GSM. Would this patch work for my country's/operator's frecuencies? I dont think I need 4G as much as I think.
Click to expand...
Click to collapse
Doesn't look like 4G/LTE will work, if you are using GSM (any band) I believe you need the patch,
I can get it shipped overseas for 172€ which doesnt seem to bad for the phone (its expensive for a older phone like this but....)
Click to expand...
Click to collapse
If you want a physical keyboard smartphone the Droid 4 is the option. Price seems a bit high, suggest looking at http://swappa.com/ , but may not be an option, depends on your location.

sd_shadow said:
Most Motorola devices are bootloader locked, Most motorola devices have custom roms available
even Droid X (Released: July 15, 2010) has Cm11
droid 4 radio specs
Technology
GSM / CDMA / HSPA / EVDO / LTE
2G bands CDMA 800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands CDMA2000 1xEV-DO
HSDPA 850 / 900 / 1900 / 2100
4G bands LTE 700 (Band 13)
Speed EV-DO Rev.A 3.1 Mbps, LTE, HSPA
GPRS Class 12
EDGE Class 12 Doesn't look like 4G/LTE will work, if you are using GSM (any band) I believe you need the patch,
If you want a physical keyboard smartphone the Droid 4 is the option. Price seems a bit high, suggest looking at http://swappa.com/ , but may not be an option, depends on your location.
Click to expand...
Click to collapse
Yup, it looks like Im out of luck on 4G. Well, I really dont miss it here personally so.
Im really on the fence about getting a Droid 4. Part of me says yes because of the QWERTY keyboard another part is that all Droid 4s I get will be "used" (some will be fresh in the case brand new but still) while any other phone I get will be almost straight from factory.