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Odd observation while comparing Sensation (Rest of world) vs. Sensation 4G (T-Mobile)

While surfing GSMArena.com I decided to use their side-by-side phone comparison tool. To my astonishment I found that the Euro vs. NA versions of these phones have different standby and talk times; mind you they have the same exact battery. Take a look at the screen shot I provided outlining the times.
Only noticeable difference (to me) is the 1700 Mhz band on the NA model for T-Mobile use. As a result this has me wondering what could cause these discrepancies? Is it because of network strengths/weaknesses and infrastructure?
I'm no engineer so this is just a shot in the dark and would like someone to chime in
Thanks in advance.
HTC Sensation vs. HTC Sensation 4G comparison on GSMArena.com
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quailallstar said:
While surfing GSMArena.com I decided to use their side-by-side phone comparison tool. To my astonishment I found that the Euro vs. NA versions of these phones have different standby and talk times; mind you they have the same exact battery. Take a look at the screen shot I provided outlining the times.
Only noticeable difference (to me) is the 1700 Mhz band on the NA model for T-Mobile use. As a result this has me wondering what could cause these discrepancies? Is it because of network strengths/weaknesses and infrastructure?
I'm no engineer so this is just a shot in the dark and would like someone to chime in
Thanks in advance.
HTC Sensation vs. HTC Sensation 4G comparison on GSMArena.com
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That's most probably a typographic error. Look carefully and you will notice that they're just the same, but inverted for 2G/3G

Lol hehehe
Sent from my HTC Sensation Z710e with my finger using telepathy

the 1700 band is so you can have countionious up and down data on hspa+ you cant do that on eurpean modle

xboarder56 said:
the 1700 band is so you can have countionious up and down data on hspa+ you cant do that on eurpean modle
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close. the AWS band is actually using both 1700 & 2100. 1 is for downlink & the other is uplink. Don't remember which is which though, you'll have to look that up yourself if you want to know.
Also, both the EU & US versions of the phone have the AWS band

@xboarder56 and xnifex, your actually both right. T-Mobile USA added a second band (1700) to be able to do full duplex mode with data. Faster data rates and your phone uploads/downloads data simultaneously. FYI, 2100 is downlink (transmit from the cell site to the phone) and 1700 is uplink (transmit from the phone to the cell site).

setzer715 said:
@xboarder56 and xnifex, your actually both right. T-Mobile USA added a second band (1700) to be able to do full duplex mode with data. Faster data rates and your phone uploads/downloads data simultaneously. FYI, 2100 is downlink (transmit from the cell site to the phone) and 1700 is uplink (transmit from the phone to the cell site).
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Ding Ding Ding! We have a winner Thanks for that good info.

Oneplus one on Koodo, no LTE

I've tried everything! Have the 16gb version, edited apns, deleted certain areas, re added. Checked info screen.
I got lte on my nexus 4 with the exact same settings from koodo. Not sure why the oneplus won't pick it up..

Probably have the Chinese version which lacks the LTE bands for koodo. LTE well only work with Rogers or Fido on the Chinese version.
Sent from my A0001 using XDA Free mobile app

The person I bought the phone had lte working with Bell. I'm not sure how to get it working on my carrier

jark99 said:
The person I bought the phone had lte working with Bell. I'm not sure how to get it working on my carrier
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Does the back of your phone have Cyanogen in the back? What is your baseband radio in Settings->Display?

zephiK said:
Does the back of your phone have Cyanogen in the back? What is your baseband radio in Settings->Display?
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Radio is m8974. It doesn't say cyanogen on back at all.

jark99 said:
Radio is m8974. It doesn't say cyanogen on back at all.
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I'm not familiar with the Canadian bands, but you have to look at the Chinese OPO and compare that with the Koodo LTE bands.
It could be possible that your friend has the Chinese version and is able to get LTE on Bell but not on Koodo or he has international which works.
Do the research and see if its compatible to begin with.
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Mobile services provided by Koodo use Telus Mobility's CDMA, HSPA+ and LTE networks. CDMA devices, however, have been discontinued by Koodo outside of Northern Ontario and Manitoba.[9] Koodo Mobile's CDMA and HSPA networks use the 800 MHz and 1900 MHz frequencies while their LTE network uses 1700/2100 MHz (AWS).
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http://en.wikipedia.org/wiki/Koodo_Mobile

Here's a list of LTE bands that North American companies use.
https://en.wikipedia.org/wiki/List_of_LTE_networks#Americas
It looks like Bell uses LTE bands 4,7,and 17 while Koodo(which is owned by Telus) only has band 4. If the back of your phone doesn't have Cyanogen written at the bottom then you have the chinese model. I'm sure Telus may eventually roll out more LTE bands but for now you might be out of luck.

Xiaomi Mi 4

Does anyone know if this Mi 4 or any of the other phones work out of box in canada?
If not, is there a way to get it working on LTE ?
THanks,

Only LTE bands it has out of the box are 1,3 and 41. I am on AT&T in US and no LTE. Edited NV values successfully but no additional LTE bands were enabled.

augie7107 said:
Only LTE bands it has out of the box are 1,3 and 41. I am on AT&T in US and no LTE. Edited NV values successfully but no additional LTE bands were enabled.
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That is unfortunate to hear, what is the fastest connectivity you're getting?
I'm on the AT&T equivalent in Canada known as Rogers.

About 7MB/S which is terrible. I like MIUI and this device is nice quality. Dare I say it has the feel of an iPhone but is loaded with Android so the best of both worlds (I personally detest the closed source IOS). So I'm suffering with no LTE just to use the MI4 but I've got a ZTE Axon for a backup if I need a LTE compatible device. Always near WIFI so it's not often. I will say, no dropped calls or texts with it and I've had it a couple weeks. Call quality is excellent.

Best you can get is 3G or H+. Also in Canada on Fido

dont buy the chinese LTE edition. i hear that does not even do 3g. the wcdma (w) variant does 3g/H+
Sent from my iPad using Tapatalk

deaglecat said:
dont buy the chinese LTE edition. i hear that does not even do 3g. the wcdma (w) variant does 3g/H+
Sent from my iPad using Tapatalk
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I have the China Union LTE model and it has 3G on AT&T.

I am not doubting you. But there are 2 LTE variants.
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TDD LTE <<< GSM 2G ok but no WCDMA 3G
FDD LTE <<< This is the Western one with WCDMA (3G) support

AT&T V10 (H900) has no band 17 support?????

I noticed GSM arena posted some variant specific specs for the V10. They stated that the H900 didn't have band 17 LTE, I thought this couldn't be possible. I checked AT&T's website, sure enough, no band 17. It has the lesser used band 29 (also 700mhz). Can anyone explain why this is? Where i live only band 17 LTE is available, so I hesitate to get the V10. Since both B17 and B29 are 700mhz, would the V10 be able to connect to band B17?
Here it is, straight from AT&T's website:
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I made a post about this if you want to check it out. The short and sweet of it is that bands 12 and 17 are being merged, and they were always on the same frequency from the start, so having both bands is redundant. In other words, since band 12 is available, band 17 is as well, as confirmed by another user for the T-Mobile variant (but it still applies for the AT&T variant).
And if you're really skeptical, don't forget that you are entitled to a buyer's remorse in which the carrier must refund your purchase.

ubergeek77 said:
I made a post about this if you want to check it out. The short and sweet of it is that bands 12 and 17 are being merged, and they were always on the same frequency from the start, so having both bands is redundant. In other words, since band 12 is available, band 17 is as well, as confirmed by another user for the T-Mobile variant (but it still applies for the AT&T variant).
And if you're really skeptical, don't forget that you are entitled to a buyer's remorse in which the carrier must refund your purchase.
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Thanks for the explanation ubergeek. So this means that even an older phone that only supported B17 will now work on, for example, t-mobiles band 12? Very cool!

urushiol said:
Thanks for the explanation ubergeek. So this means that even an older phone that only supported B17 will now work on, for example, t-mobiles band 12? Very cool!
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An older phone that supports B12 can support B17 but only at the specified frequencies it's set at.

Are all variants the same lte band support?
Sent from my iPhone using Tapatalk

One word answer, yes.
Sent from my SAMSUNG-SM-G920A using XDA-Developers mobile app

LTE Bands on an N920T

Going by the specs I've seen on a number of tech sites, I've always thought that the LTE bands on most T-Mobile phones were limited to those that T-Mobile and AT&T use (4 and 12). However, when I ran "search for operators" I could see Verizon (and ATT + TMo) towers. Then I found this page at T-Mobile's own website that shows this:
InternationalQuad Band GSM; LTE: 1, 2, 3, 4, 5, 7, 8, 12, 20; UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850)​​
The UMTS bands obviously are TMo's, but LTE covers way more than they have deployed. So it would seem the N920T really has these bands? Perhaps it's because the chipset is Exynos.

voxluna said:
Going by the specs I've seen on a number of tech sites, I've always thought that the LTE bands on most T-Mobile phones were limited to those that T-Mobile and AT&T use (4 and 12). However, when I ran "search for operators" I could see Verizon (and ATT + TMo) towers. Then I found this page at T-Mobile's own website that shows this:
InternationalQuad Band GSM; LTE: 1, 2, 3, 4, 5, 7, 8, 12, 20; UMTS: Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850)​​
The UMTS bands obviously are TMo's, but LTE covers way more than they have deployed. So it would seem the N920T really has these bands? Perhaps it's because the chipset is Exynos.
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You can see and change the band's from the dialer using *#2263#
I don't recommend changing them but you can look at the list.
I did change the default bands to LTE/WCDMA/GSM on mine for use on AT&T
Sent from my SM-N920T using Tapatalk

clsA said:
You can see and change the band's from the dialer using *#2263#
I don't recommend changing them but you can look at the list.
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That's interesting. When I execute that USSD, it shows way more bands than I quoted from TMo's spec list:
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And this continues into the 40s, I just can't remember how to screencap the entire page. I am curious if they are all actual bands you can use, or (I would assume at this point) every possible LTE band there is. But it's a feature code I haven't seen before, so +thanks.

Well, after further digging in the *#2263# screens, this definitely looks like an international kind of phone.
If the settings are to be believed, there's also support for TD-SCDMA, which is an alternative to W-CDMA (and incompatible with it). That's used in China, which is a long way off from T-Mobile territory.
But that's great -- such an enormous frequency list is exactly what a flagship should offer. And it's probably no coincidence that this is an Exynos chipset, because other phones using Qualcomm seem to have restrictions in place for the US market.