Develop Bugs

[Q] International / Unlocked HTC 8 (M8x) - LTE bands?? Majorly confused

Hi - I got a killer deal on an international (Asian model) HTC One M8x on eBay so I jumped on it... After receiving it, I noticed LTE is not working with T Mobile. The phone supports LTE 700 / 900 / 1800 / 2100 / 2600... Before purchasing, I didn't notice AWS/Band 4 wasn't listed. Oh well, still a great device.
I did some research and saw that T-Mo just bought Verizon's 700mhz; but 'Block A' only..? my phone supports 700mhz, but I'm not sure which block it will work with.
I live in a pretty populated area in Southern California, so I would assume that this area will be covered when T-Mo rolls out 700mhz on their network around early 2015.
Will my phone work on Block A? What is the difference between blocks? I just recently learned about the different frequencies, and now I'm hearing 'block A, B, C,' etc.. I'm officially confused.
Anyone with extended knowledge of LTE - your responses are greatly appreciated.
thanks!!!

According to the following Wiki, the 700 MHz bands used in North America are also called Bands 12, 13, and 17. These seem to correspond with the blocks you mentioned (A, B, C) with "700 a" (presumably Block A) corresponding to Band 12.
http://en.wikipedia.org/wiki/List_of_LTE_networks
Of the countries and carriers in Europe, Middle East, and Asia (the "international" M8 is actually called the EMEA version) only Taiwan seems to use 700 MHz, and its Band 28. So presumably, this is the band that is supported by your version.
Not sure, but you might be out of luck (your phone supports Band 28, but T-Mobile bought Band 12?).
It is confusing, I agree. My main takeaway is that there sure a lot of different bands that make up 700 MHz!

redpoint73 said:
According to the following Wiki, the 700 MHz bands used in North America are also called Bands 12, 13, and 17. These seem to correspond with the blocks you mentioned (A, B, C) with "700 a" (presumably Block A) corresponding to Band 12.
Of the countries and carriers in Europe, Middle East, and Asia (the "international" M8 is actually called the EMEA version) only Taiwan seems to use 700 MHz, and its Band 28. So presumably, this is the band that is supported by your version.
Not sure, but you might be out of luck (your phone supports Band 28, but T-Mobile bought Band 12?).
It is confusing, I agree. My main takeaway is that there sure a lot of different bands that make up 700 MHz!
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Thanks for the info and the link!! After reading the wiki page I did some more Googling.. It seems as though the 700mhz is available through bands 12, 13, 14, 44, 17 and 28. It's crazy that my phone only supports one of them. Too bad I won't have LTE....HSPA+ is horribly slow where I live. (unless it's about 3am, then I get a few MB up and down)
I noticed you have AT&T...are you aware if this phone will pick up LTE on an AT&T gophone? I will consider their $60/month prepaid if it will.
Or maybe another GSM carrier that my phone is compatible with? I would really hate to leave T-Mo but I miss LTE.
thanks again for your help!

charkswitlazers said:
Thanks for the info and the link!! After reading the wiki page I did some more Googling.. It seems as though the 700mhz is available through bands 12, 13, 14, 44, 17 and 28. It's crazy that my phone only supports one of them. Too bad I won't have LTE....HSPA+ is horribly slow where I live. (unless it's about 3am, then I get a few MB up and down)
I noticed you have AT&T...are you aware if this phone will pick up LTE on an AT&T gophone? I will consider their $60/month prepaid if it will.
Or maybe another GSM carrier that my phone is compatible with? I would really hate to leave T-Mo but I miss LTE.
thanks again for your help!
Click to expand...
Click to collapse
T-mobile's AWS platform is mostly going to be a 1900 and 1700 setup if i remember correctly. they have purchased the 700mhz spectrum from verizon but no one is really using it yet. Only Verizon has even started to populate that spectrum with their new X-LTE which no one can really take advantage of. and really the HSDPA isnt that bad. i mean i have a tmobile M8 and i get LTE like 70% of the time but the rest of the time i'm on HSPAP and its fine i get like anywhere between 5-10mbps...
http://en.wikipedia.org/wiki/T-Mobile_US
you can look further down the page it shows you every band that they use or own.

charkswitlazers said:
After reading the wiki page I did some more Googling.. It seems as though the 700mhz is available through bands 12, 13, 14, 44, 17 and 28. It's crazy that my phone only supports one of them.
Click to expand...
Click to collapse
Its not really that crazy. When they say "700 Mhz" I think what they really mean is that the actually frequencies used are somewhere around 700-799 MHz. And this can be divided up to many different distinct "bands". If you refer to the Wiki page I linked, you will see in the notes under the North America section, for example:
700 Block B
(↓) 734 – 740 MHz / (↑) 704 – 710 MHz
So the MHz number can be misleading; and its really the Band (12, 13, etc.) that you need to pay attention to. Or both the Band/block and MHz in conjunction really, as its often the MHz that is listed.
charkswitlazers said:
I noticed you have AT&T...are you aware if this phone will pick up LTE on an AT&T gophone? .
Click to expand...
Click to collapse
Don't think it work on AT&T's LTE network. AT&T uses Bands 4 and 17 for LTE. None of these are supported on the EMEA version based on what we've discussed.
Buying phones from 3rd party sources can be very tricky. US carriers in particular use very particular and often proprietary bands. This was true with 3G, and seems to be even more so with LTE. The bands used by even foreign markets has become increasingly less standardized with LTE (there was a good amount of standardization in foreign regions with 2G and 3G). One has to be very careful and resource thoroughly before buying a phone from any source aside from your carrier.

charkswitlazers said:
Hi - I got a killer deal on an international (Asian model) HTC One M8x on eBay so I jumped on it... After receiving it, I noticed LTE is not working with T Mobile. The phone supports LTE 700 / 900 / 1800 / 2100 / 2600... Before purchasing, I didn't notice AWS/Band 4 wasn't listed. Oh well, still a great device.
I did some research and saw that T-Mo just bought Verizon's 700mhz; but 'Block A' only..? my phone supports 700mhz, but I'm not sure which block it will work with.
I live in a pretty populated area in Southern California, so I would assume that this area will be covered when T-Mo rolls out 700mhz on their network around early 2015.
Will my phone work on Block A? What is the difference between blocks? I just recently learned about the different frequencies, and now I'm hearing 'block A, B, C,' etc.. I'm officially confused.
Anyone with extended knowledge of LTE - your responses are greatly appreciated.
thanks!!!
Click to expand...
Click to collapse
hello , iam going to the USA with the same model m8x to t-mobile in Washington dc ,so basically iam in the same position as you , did u find any new solution to the LTE problem ? if not ,does only hspa+ working ? if so i have seen some good speeds with t-mobile hspa+ ( 15mb dowload ) . does flashing these (http://forum.xda-developers.com/showthread.php?t=2736921) helps ? please respond

"Bad reception" Find 7a x9006 need help please.

When receive a call, my reception is so bad i have to walk outside, for the other person to be able to hear me every time, my 4G internet basically wont work inside, I replaced sim card too. I don't have this issue with my Samsung Galaxy i9305 inside for calls or internet. Basically I can't use this phone it's not reliable, I've updated to the latest colouros then installed slimsaber, maybe the issues the "Baseband" tho updated colouros 2 times assume it changed baseband, definitely changed with slimsaber.
I'm using an Australian provider Amaysim, it uses the networks 700MHz, 1800MHz, 2100 MHz, 2300MHz and 2600MHz for 4G my find is the international x9006 version the box says it uses FDD-LTE Bands 1/3/7/20 and TD-LTE 40 this page on oppo describes the networks http://community.oppo.com/en/forum.php?mod=viewthread&tid=11921&extra= tho it confuses me, since b1 b2 ect each have 4 different frequencies listed.
https://en.wikipedia.org/wiki/List_of_LTE_networks
On there for Optus which is the network Amaysim uses, it lists FDD, Band 1 as 2100Mhz 3 as 1800Mhz 7 as 2600Mhz band 20 seems to be for 800Mhz which Amaysim doesn't use, and TD-LTE 40 is using the 2300MHz
So it would seem my phone supports all frequencies except 700Mhz which my i9305 doesn't have either, so it just seems to me oppo release phones with crap basebands for phone reception out of the box.
Appreciate any and all help with this.

This issue you're having actually sounds like a bad modem. Since SlimSaber is based on CM, you could try flashing ColorOS 1.2.7i, as CM works best with 1.2.7i, and then reflashing SlimSaber. You could follow a detailed guide to flash your ROM step-by-step by Oppo Community member fezode (kudos to him for this helpful guide for beginners). Google it as I can't post outside links yet.
Cheers!

Unlock Mate SE frequency bands

Is it possible? I'm with MetroPCS and get about 80% of their frequencies but I'm short a few bands. Anyone on the same boat as me?

someeh said:
Is it possible? I'm with MetroPCS and get about 80% of their frequencies but I'm short a few bands. Anyone on the same boat as me?
Click to expand...
Click to collapse
I'm with T-Mobile and the phone works great with no band issues-even better than my S7 edge Tmo.

Mr. Clown said:
I'm with T-Mobile and the phone works great with no band issues-even better than my S7 edge Tmo.
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Click to collapse
I know MetroPCS uses their network. Have you done the frequency check to see if you're getting all their bands, for t mobile I mean? I have attached the bands that the mate supports on Metro but would like to enable the ones that aren't.

someeh said:
I know MetroPCS uses their network. Have you done the frequency check to see if you're getting all their bands, for t mobile I mean? I have attached the bands that the mate supports on Metro but would like to enable the ones that aren't.
Click to expand...
Click to collapse
I don't think the Mate phone (or any honor 7x version) have the hardware capabilities for band 66 or 71. If the phone was exclusively for T-Mobile, I bet Huawei probably equipped at least their flagships with them. Below you can see all the supported bands from all the Honor 7x versions.
https://www.gsmarena.com/huawei_honor_7x-8880.php#l24
For me, even if the phone had either band 66 or 71 dunno if T-Mobile have deployed these frequencies where I live. I either get band 4 or 12 and is incredible fast (100 Mbps download).

ugh i totally want to know how to unlock all those bands
This phone becomes useless when you travel to Europe especially with LTE as major bands used in Europe aren't supported on US models.
this is very frustrating.

Note 10 Plus SM-N975F users on T-Mobile, questions?

Hello,
I recently purchased an N975F, and I'm using it on T-Mobile, in the US. How is your experience been using it on T-Mobile's network? For me, its showing "4G" all the time. I haven't seen it go to "LTE". Is this normal? Also, it seems fast data speeds are difficult to come by, and spotty. Before I purchased, I checked the bands it supports, and it shows it supports all but one (band 77). I've verified the APN, its correct. VOLTE, and WiFi calling works. It's on One UI 2.0 Android 10. Thanks in advance!

4G = LTE....

Thank you for the clarification. Also, its band 71, not band 77. My typo

OnePlusPat16 said:
Thank you for the clarification. Also, its band 71, not band 77. My typo
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Click to collapse
Where are you located, are you in a Band 71 area? Not having Band 71 can be a big deal in some areas. Use an app like LTE discovery to see what you are actually connecting to.

BladeRunner said:
Where are you located, are you in a Band 71 area? Not having Band 71 can be a big deal in some areas. Use an app like LTE discovery to see what you are actually connecting to.
Click to expand...
Click to collapse
Im located in Portland, OR. So far, ive been utilizing bands 2, and 4. Sometimes band 12. I get speeds anywhere from 2mbps to 100mbps. My wife has a s10 plus with the 855, and her speeds are around 20 to 40 mbps higher.

Ive been doing testing on different firmwares. So far, it seems Switzerland has the best performance. CSC: AUT.

device variant question

is there a variant that i can root and use on tmobile 5g?

Forget about trying to root Snapdragon versions.

@42o247 forget @roaduardo and his wrong answer.
if you want to root Snapdragon get SM-G9860 for S20+ works like a charm.

chieco said:
@42o247 forget @roaduardo and his wrong answer.
if you want to root Snapdragon get SM-G9860 for S20+ works like a charm.
Click to expand...
Click to collapse
I assume that's the HK version?

chieco said:
@42o247 forget @roaduardo and his wrong answer.
if you want to root Snapdragon get SM-G9860 for S20+ works like a charm.
Click to expand...
Click to collapse
do you think that works with tmobile 5g?

roaduardo said:
I assume that's the HK version?
Click to expand...
Click to collapse
yes.
42o247 said:
do you think that works with tmobile 5g?
Click to expand...
Click to collapse
there are tons of information about this device. I gave you already the most important information which was SM-G9860. You can easily google SM-G9860 5G T-Mobile. Or search for the supported bands and the bands T-Mobile uses.

chieco said:
You can easily google SM-G9860 5G T-Mobile. Or search for the supported bands and the bands T-Mobile uses.
Click to expand...
Click to collapse
i tried that before i even posted but most of the results are for the sm-g9860u and from the how to root guide it seemed like all the variants ending with U were unable to unlock the bootloader or root. i figured i would ask if anyone had a personal opinion or knowledge before wasting more of my time searching. thanks for the response though your thoughts are sincerely appreciated.

42o247 said:
i tried that before i even posted but most of the results are for the sm-g9860u and from the how to root guide it seemed like all the variants ending with U were unable to unlock the bootloader or root. i figured i would ask if anyone had a personal opinion or knowledge before wasting more of my time searching. thanks for the response though your thoughts are sincerely appreciated.
Click to expand...
Click to collapse
These are T-mobile's 5G Bands.
Band n71 (600 MHz)
Band N260 (39 GHz)
Band N261 (28 GHz)
Band n41 (2.5 GHz)
These are the SM-G9880 and SM-G9860 5G Bands.
Bands Sub6
Band N41 (2.5 GHz)
Band N78 (3.5 GHz)
Band N79 (4.5 GHz)
Samsung S20 5G UW Bands
260, 261 mmWave
The device "should work" on Band N41. Also, keep in mind there are different variants of 5G Protocol. Low-Band, Mid-Band and Millimeter Wave. mmWave is the gold standard when speed is the only criteria.
mmWave high-band 5G: T-Mobile, AT&T and Verizon. About 10x faster than LTE with extremely low latency, which means you need to be standing really close to a tower or transmitter to get those speeds. Mid-band 5G: Sprint. About 6x faster than LTE, but with a smaller footprint than low-band. Low-band 5G: T-Mobile/AT&T. About 20 percent faster than 4G LTE.
If I were compelled to utilize 5G, which at this time I'm not, I would consider AT&T. They are the only Service Provider offering mmWave 5G on a Samsung 5G UW Device. Even though it has a Snapdragon SoC, I suspect the bootloader is locked like all of the US Carrier Devices.

varcor said:
These are T-mobile's 5G Bands.
Band n71 (600 MHz)
Band N260 (39 GHz)
Band N261 (28 GHz)
Band n41 (2.5 GHz)
These are the SM-G9880 and SM-G9860 5G Bands.
Bands Sub6
Band N41 (2.5 GHz)
Band N78 (3.5 GHz)
Band N79 (4.5 GHz)
Samsung S20 5G UW Bands
260, 261 mmWave
The device "should work" on Band N41. Also, keep in mind there are different variants of 5G Protocol. Low-Band, Mid-Band and Millimeter Wave. mmWave is the gold standard when speed is the only criteria.
mmWave high-band 5G: T-Mobile, AT&T and Verizon. About 10x faster than LTE with extremely low latency, which means you need to be standing really close to a tower or transmitter to get those speeds. Mid-band 5G: Sprint. About 6x faster than LTE, but with a smaller footprint than low-band. Low-band 5G: T-Mobile/AT&T. About 20 percent faster than 4G LTE.
If I were compelled to utilize 5G, which at this time I'm not, I would consider AT&T. They are the only Service Provider offering mmWave 5G on a Samsung 5G UW Device. Even though it has a Snapdragon SoC, I suspect the bootloader is locked like all of the US Carrier Devices.
Click to expand...
Click to collapse
ill pass for now in the samsung troubles. seems to me that its not worth the trouble to find a samsung device that gets tmobile 5g and root. thanks again samsung

42o247 said:
ill pass for now in the samsung troubles. seems to me that its not worth the trouble to find a samsung device that gets tmobile 5g and root. thanks again samsung
Click to expand...
Click to collapse
yeah you should pass on Samsung in general and get a 8 Pro. But if your decision depends only on 5G I have to say it shouldn't be that important, because 5G isn't that relevant so far, and maybe for the coming 1-2 years. And I'm sure won't keep the device longer then that anyways...
Also 5G caused CORONA VIRUS!!! LOL just kidding,

42o247 said:
ill pass for now in the samsung troubles. seems to me that its not worth the trouble to find a samsung device that gets tmobile 5g and root. thanks again samsung
Click to expand...
Click to collapse
You should pass on T-Mobile as well, their 5G squirts!

yeah tmobile isnt great and samsung is nerfed by the software. im giving up on cell phones and switching back to a landline

chieco said:
yes.
there are tons of information about this device. I gave you already the most important information which was SM-G9860. You can easily google SM-G9860 5G T-Mobile. Or search for the supported bands and the bands T-Mobile uses.
Click to expand...
Click to collapse
You can Google stuff? Word?

varcor said:
These are T-mobile's 5G Bands.
Band n71 (600 MHz)
Band N260 (39 GHz)
Band N261 (28 GHz)
Band n41 (2.5 GHz)
These are the SM-G9880 and SM-G9860 5G Bands.
Bands Sub6
Band N41 (2.5 GHz)
Band N78 (3.5 GHz)
Band N79 (4.5 GHz)
Samsung S20 5G UW Bands
260, 261 mmWave
The device "should work" on Band N41. Also, keep in mind there are different variants of 5G Protocol. Low-Band, Mid-Band and Millimeter Wave. mmWave is the gold standard when speed is the only criteria.
mmWave high-band 5G: T-Mobile, AT&T and Verizon. About 10x faster than LTE with extremely low latency, which means you need to be standing really close to a tower or transmitter to get those speeds. Mid-band 5G: Sprint. About 6x faster than LTE, but with a smaller footprint than low-band. Low-band 5G: T-Mobile/AT&T. About 20 percent faster than 4G LTE.
If I were compelled to utilize 5G, which at this time I'm not, I would consider AT&T. They are the only Service Provider offering mmWave 5G on a Samsung 5G UW Device. Even though it has a Snapdragon SoC, I suspect the bootloader is locked like all of the US Carrier Devices.
Click to expand...
Click to collapse
Even device support n41 ( 2.5 GHz) that doesn't mean it work in T-Mobile/Sprint 5G-network because it require anchor band on 4G. But i don't know much about this Hong Kong variant because haven't got any log from it. If someone have, please share. Here is instruction to get modem log: https://mt-tech.fi/en/how-to-get-4g...ons-from-your-android-phone/#Qualcomm_devices . Please send log to: https://cacombos.com/contribute
I have some S20 variants supported bands and these combinations in my site: https://cacombos.com/search?key=S20 . I just need more data from these devices to complete listing.
But in USA i recommend buy device in US. Devices from overseas doesn't often support 4G and 5G carrier combinations used in US so you get less speed on network.

olkitu said:
Even device support n41 ( 2.5 GHz) that doesn't mean it work in T-Mobile/Sprint 5G-network because it require anchor band on 4G. But i don't know much about this Hong Kong variant because haven't got any log from it. If someone have, please share. Here is instruction to get modem log: https://mt-tech.fi/en/how-to-get-4g...ons-from-your-android-phone/#Qualcomm_devices . Please send log to: https://cacombos.com/contribute
I have some S20 variants supported bands and these combinations in my site: https://cacombos.com/search?key=S20 . I just need more data from these devices to complete listing.
But in USA i recommend buy device in US. Devices from overseas doesn't often support 4G and 5G carrier combinations used in US so you get less speed on network.
Click to expand...
Click to collapse
A great resource and good to know, thanks! I agree with your suggestion to purchase the device from your Service Provider, that will pretty much guarantee you'll have all Carrier Aggregation utilities and 5G Connectivity Protocols in place. Unfortunately, users want a phone which has everything, no bloatware, unlocked bootloader, universal connectivity, full carrier aggregation and the best SoC. With all the variants from Samsung and varied Service Provider metrics that's not realistic.
I have a few questions you may be qualified to answer. Does the first letter of a band being capitalized or not have significance? Example n71 or N71? Does this represent MHz versus GHz? Secondly, in the example above, both the device and AT&T have a number of matching 4G Bands. Would this indicate the device will be able to anchor to the carrier? Lastly, let's assume a device and the carrier have multiple matching bands. Who or what determines which band will be paired in a specific connection, will the carrier determine this based on location or traffic volume, does the user have the ability switch to a specific bandwidth?

varcor said:
A great resource and good to know, thanks! I agree with your suggestion to purchase the device from your Service Provider, that will pretty much guarantee you'll have all Carrier Aggregation utilities and 5G Connectivity Protocols in place. Unfortunately, users want a phone which has everything, no bloatware, unlocked bootloader, universal connectivity, full carrier aggregation and the best SoC. With all the variants from Samsung and varied Service Provider metrics that's not realistic.
I have a few questions you may be qualified to answer. Does the first letter of a band being capitalized or not have significance? Example n71 or N71? Does this represent MHz versus GHz? Secondly, in the example above, both the device and AT&T have a number of matching 4G Bands. Would this indicate the device will be able to anchor to the carrier? Lastly, let's assume a device and the carrier have multiple matching bands. Who or what determines which band will be paired in a specific connection, will the carrier determine this based on location or traffic volume, does the user have the ability switch to a specific bandwidth?
Click to expand...
Click to collapse
n71 and N71 is same band 600 MHz 5G NR. But in cacombos.com you see different characters like C what means contiguous intra-band CA. Example 3C.
On cacombos.com you can see example combination 2A4-66A4A_n71A2A what means 2-66_71 CA combination. Band 66 is anchor band for n71 5G.