[Q] need some help before buying the m8 - One (M8) Q&A, Help & Troubleshooting

i am about to switch from the note 3 the only android phones i have used were from samsung so i am a total noob when it comes to the htc dev community...i am about to buy an m8 which is from verizon usa but is sim unlocked meaning it can work in my country pakistan...the questions i have are as follows
the phone is from verizon will i be able to flash all the custom roms like PA,CM and other AOSP roms?because in samsungs world there are different roms for tmobile etc.
will flashing roms affect my phones unlocked status?
can i turn my phone into a gpe edition phone?
if there are any other hiccups or bugs which i should check before buying the phone please fill me in folks.

First of you need to look at which bands are used in your country and compare them to the Verizon bands. Which can be found on google as I cannot link to other websites . Most countries outside of the US have carriers that use GSM networks so beware as verizon does not and uses a CDMA network. If you have a carrier in pakistan that uses GSM bands you can look at buying an AT&T version and look if bands coincide.
I would also suggest buying a unlocked phone which would make things much easier, as some custom roms cannot be flashed on the verizon/sprint version. If you want to flash custom roms you do need to unlock the bootloader. As I said above GPE roms usually do not work with verizon/sprint edition of a phone, as far as I know you can flash a GPE rom from phones on other carriers. Still I heavily suggest buying an unlocked phone.
I myself am using an unlocked HTC One M8 and have found no bugs whatoever and use a GPE rom and everything is smooth as silk. It's an amazing phone and worth the last penny but if your phone won't work with the bands in your country it's useless so be carefull!

If you can buy a used model with s-off. It'll save you any potential headaches.
Sent from my HTC One_M8 using XDA Free mobile app

rodelisdeman said:
First of you need to look at which bands are used in your country and compare them to the Verizon bands. Which can be found on google as I cannot link to other websites . Most countries outside of the US have carriers that use GSM networks so beware as verizon does not and uses a CDMA network. If you have a carrier in pakistan that uses GSM bands you can look at buying an AT&T version and look if bands coincide.
I would also suggest buying a unlocked phone which would make things much easier, as some custom roms cannot be flashed on the verizon/sprint version. If you want to flash custom roms you do need to unlock the bootloader. As I said above GPE roms usually do not work with verizon/sprint edition of a phone, as far as I know you can flash a GPE rom from phones on other carriers. Still I heavily suggest buying an unlocked phone.
I myself am using an unlocked HTC One M8 and have found no bugs whatoever and use a GPE rom and everything is smooth as silk. It's an amazing phone and worth the last penny but if your phone won't work with the bands in your country it's useless so be carefull!
Click to expand...
Click to collapse
thank you for the reply i checked up on the bands and they said it is gsm supported and the bands were alright but i found the verizon thread and there was a very weak number of roms so im holding off .

Related

[Q] Flash T-Mobile Rom on AT&T M8??

I have an AT&T M8 which I unlocked, rooted and s-off'd while under AT&T contract. I then decided to switch to T-Mobile and give this device to my 11-year old son. What I'd like to know/understand is whether I can flash some of the T-Mobile Roms I see in this forum on the AT&T M8 and it work with T-Mobile network? Or do I still need to flash the AT&T Roms?
Thanks in advance for any help advice!
Johnny
SIM unlocked would allow you to use it on stock AT&T too if you choose to. Also everything seems to be interchangeable unless noted. I would go for Rom with T-Mobile's Wi-Fi calling, which is amazing btw for those who get sorry service.
Sent from my HTC One_M8 using XDA Free mobile app
jteunis said:
I have an AT&T M8 which I unlocked, rooted and s-off'd while under AT&T contract. I then decided to switch to T-Mobile and give this device to my 11-year old son. What I'd like to know/understand is whether I can flash some of the T-Mobile Roms I see in this forum on the AT&T M8 and it work with T-Mobile network? Or do I still need to flash the AT&T Roms?
Thanks in advance for any help advice!
Johnny
Click to expand...
Click to collapse
You should be able to flash either T-mobile or AT&T (Even roms in the international section, I would recommend InsertCoin) roms without any issues. Eleven and has a M8? Damn, i'm jealous lol.
Da Kine said:
You should be able to flash either T-mobile or AT&T (Even roms in the international section, I would recommend InsertCoin) roms without any issues. Eleven and has a M8? Damn, i'm jealous lol.
Click to expand...
Click to collapse
Thanks for the information to the both ^^^^^^^^ of you! I appreciate it. Yes , he is 11 years old, but a good respectful kid and does well in school. With that I'm okay with giving him nice things. If that should change, then Daddy gets the M8 back!!! LOL
Somewhat related question... If I u were to use an AT&T model on T-Mobile, would everything work correctly, 3g/4g? Comparing the frequency bands online, the AT&T model is missing the 1700 band that the T-Mobile version has. Does that mean the phone doesn't have the hardware components to connect to it? Or is it capable of connecting, just that AT&T doesn't use that band? I'm asking because I want to pickup a used m8, but the T-Mobile version is going for around $100 more than all the other carrier's versions... Could I just SIM unlock an AT&T version and be set, or will some things not work?
316224348996
los1223 said:
Somewhat related question... If I u were to use an AT&T model on T-Mobile, would everything work correctly, 3g/4g? Comparing the frequency bands online, the AT&T model is missing the 1700 band that the T-Mobile version has. Does that mean the phone doesn't have the hardware components to connect to it? Or is it capable of connecting, just that AT&T doesn't use that band? I'm asking because I want to pickup a used m8, but the T-Mobile version is going for around $100 more than all the other carrier's versions... Could I just SIM unlock an AT&T version and be set, or will some things not work?
Click to expand...
Click to collapse
That's a good question and hoping someone will have the answer. In the meantime I was able to SIM unlock my son's ATT M8 and install a TMobile SIM using stock ATT rom. So far everything has worked and the 4G symbol does appear in the task bar, although I'm not sure if that really means he's getting 4G. I did have to manually enter the APN settings so he could get mobile data when not connected to wifi.
Tmobile apn settings
Would you mind posting the apn settings that allowed your sons phone to work on 4g and send mms? Its the main reason I'm looking into flashing a Rom and would save me a lot of trouble as I have spent quite a bit of time searching for one that works on my phone and none seem to do the trick.

what is the difference between m8 models?

hello guys
im planning to buy htc m8 from a guy, the phone has verizon brand on it and the question is: is there any difference between the international m8 and verizon one? and can i flash the official's one rom on the verizon's one? and in general, is there any hardware or sofware difference?
The Verizon and Sprint models are different hardware, due to the CDMA (plus GSM) radio. All the GSM versions of the M8 are essentially the same hardware, but the CDMA versions are the exception. Trying to flash GSM software onto the Verizon version won't work, and might even brick the phone. I'd stay away from the Verizon version, unless you happen to need CDMA (not likely in most parts of the world outside the US).
redpoint73 said:
The Verizon and Sprint models are different hardware, due to the CDMA (plus GSM) radio. All the GSM versions of the M8 are essentially the same hardware, but the CDMA versions are the exception. Trying to flash GSM software onto the Verizon version won't work, and might even brick the phone. I'd stay away from the Verizon version, unless you happen to need CDMA (not likely in most parts of the world outside the US).
Click to expand...
Click to collapse
Thank you man, you saved me, i apologized to the guy.actually, one of my big concerns is custom roms, i ordered my 4g note 3 from outside my country just because it has more support.
Thank you again man

M9 Developer or M9 Unlocked Model

Verizon is going to let me choose between an unlocked phone and developer model phone. Which one should I choose? (in terms of ROM support, ease up update access, root...etc)
Nevermind, its unlocked version only. I get to try the phone out and see if it is still plagued by the blurry, color/light bleed/auto focus issue or not. If it is, they will let me get a Note 4
Balian67 said:
Verizon is going to let me choose between an unlocked phone and developer model phone. Which one should I choose? (in terms of ROM support, ease up update access, root...etc)
Nevermind, its unlocked version only. I get to try the phone out and see if it is still plagued by the blurry, color/light bleed/auto focus issue or not. If it is, they will let me get a Note 4
Click to expand...
Click to collapse
How is that going to work the dev and unlocked m9's are supposed to be gsm only meaning no cdma ? And the LTE bands for verizon are not supposed to be enabled on the non verizon versions of the m9 ?
Actually all the verizon m9's are unlocked because verizon does not sim lock phones any more they just lock the bootloaders and wont let htc dev unlock them.
M9guy said:
How is that going to work the dev and unlocked m9's are supposed to be gsm only meaning no cdma ? And the LTE bands for verizon are not supposed to be enabled on the non verizon versions of the m9 ?
Actually all the verizon m9's are unlocked because verizon does not sim lock phones any more they just lock the bootloaders and wont let htc dev unlock them.
Click to expand...
Click to collapse
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.
Balian67 said:
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.
Click to expand...
Click to collapse
Ok so lets say all of them have cdma built in and your right, so then how do you get the bands enabled for verizon LTE on a gsm m9 such as the unlocked m9 sold by htc directly ?
The posts about this on the m8 all required s-off to enable other bands such as enable the bands on a verizon m8 to get Tmobile LTE and then people still had issues having to toggle airplane mode all the time to get the Tmobile LTE back working on their verizon m8.
I had tried and tried to convert my verizon m8 to a dev edition like people did on the gsm versions which they all could but no one ever figured out how to get it done.
So my ultimate question is how would they get verizon LTE bands enabled on a gsm based carrier unlocked m9 that is not s-off ?
---------- Post added at 01:44 AM ---------- Previous post was at 01:39 AM ----------
Balian67 said:
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.
Click to expand...
Click to collapse
Oh and tear into verizon all you like bro let me help with that lol as I hate them as much as you do.
And I think the sammys have the bands enabled for basically all LTE in all the major carriers like the nexus 6 so they can run on any network.
I think they should require all phones to work on any network just like the nexus 6 so one version can work on any network, I guess we can dream right that would be my only complaint with htc that they dont enable the bands for all networks here in the USA.
M9guy said:
Ok so lets say all of them have cdma built in and your right, so then how do you get the bands enabled for verizon LTE on a gsm m9 such as the unlocked m9 sold by htc directly ?
The posts about this on the m8 all required s-off to enable other bands such as enable the bands on a verizon m8 to get Tmobile LTE and then people still had issues having to toggle airplane mode all the time to get the Tmobile LTE back working on their verizon m8.
I had tried and tried to convert my verizon m8 to a dev edition like people did on the gsm versions which they all could but no one ever figured out how to get it done.
So my ultimate question is how would they get verizon LTE bands enabled on a gsm based carrier unlocked m9 that is not s-off ?
---------- Post added at 01:44 AM ---------- Previous post was at 01:39 AM ----------
Oh and tear into verizon all you like bro let me help with that lol as I hate them as much as you do.
And I think the sammys have the bands enabled for basically all LTE in all the major carriers like the nexus 6 so they can run on any network.
I think they should require all phones to work on any network just like the nexus 6 so one version can work on any network, I guess we can dream right that would be my only complaint with htc that they dont enable the bands for all networks here in the USA.
Click to expand...
Click to collapse
1. You are probably right about the T-Mobile thing, but it IS T-mobile. I don't even think they, or sprint can keep up with the big boys. So If I got the GSM unlocked...and did the paypal buy over a year option, I wouldn't re-activate on Verizon for quite a while. I plan on going to Israel so I don't need a CDMA device for a while...Even so, the M9 has the bands for all of the networks, last time I checked. Saying that, I will already have S-OFF because it would be a dev edition, or the unlocked version that I would just S-OFF through HTC Dev. Saying ALL of this, even if I do come back to USA and CAN'T be on Verizon (whom I think is better then ATT), then I could go ATT. Ya know? That is IF I came back to the USA. So what do you think now? (With more information about the situation).

AT&T S9 Root unlock question

Hi,
If I take a AT&T S9, Unlock the bootloader (if possible), root it, and flash a custom rom on it will I then be able to use it on Verizon?
Thank you in Advance.
Kc0r8y said:
Hi,
If I take a AT&T S9, Unlock the bootloader (if possible), root it, and flash a custom rom on it will I then be able to use it on Verizon?
Thank you in Advance.
Click to expand...
Click to collapse
ATz&T is GSM Verizon is CDMA incompatible
Perhaps @sw1173 is a dinosaur or a forum troll?
Verizon 4G LTE is not CDMA. It's 4G LTE and fully compatible with 4G LTE used by other carriers around the globe. Verizon 2g and 3g is CDMA, and only still exists to support older cellular data and IoT devices and some dinosaurs using ancients relics for devices. Verizon announced they were planning on completely shutting down their CDMA network the end of 2019, but just recently decided to postpone the shutdown for up to another year. Verizon has been permitting activation of an ever expanding list of unlocked phones for some time now, including devices like the OnePlus 6T that has no CDMA support, just 4G LTE. If you already have a 4G LTE device activated, you can swap the SIM into another 4G LTE device and as long as it has radio band support for Verizon's spectrum (use frequencycheck.com) as well as software support for Verizon's VoLTE settings, you're good to go. They don't seem to have a VoLTE whitelist like AT&T.
Sadly, the bootloader on the US Snapdragon S9 can not be unlocked at this point (no hacks) like the foreign SM-G960F(D)/965F(D) (Exynos with unlocked bootloader) or the SM-G9600/9650 (Snapdragon with unlocked bootloader) in order to install custom ROMs. I suggest everyone avoid US Samsung phones, period, because of this, and be sure to share your discontent with Samsung. Personally, if I were you, I would get the SM-G9600 or SM-G9650 (China / Latin America Version), root it (easy), and flash the files here to get Verizon support:
https://forum.xda-developers.com/galaxy-s9/how-to/guide-sm-g9600-sm-g9650-verizon-t3890695
If you buy or have a carrier unlocked US S9, including from AT&T, you can use it with any US carrier, including Verizon. You'll probably want to flash the Verizon firmware on it to get Verizon features including WiFi calling though:
https://www.reddit.com/r/GalaxyS9/comments/85ci7c/convert_atttmosprint_to_unlocked_s9_guide/
Presently you can't unlock the boot loader on the n960u therefore you can't flash Verizon's firmware. Call Verizon and you will be told they are CDMA and are not changing but are adding capability for 5G after 1/1/2020, which will allow the use of various GSM devices to use their CDMA network.. I just spoke with Verizon sales and their technical support.
sw1173 said:
ATz&T is GSM Verizon is CDMA incompatible
Click to expand...
Click to collapse
incorrect, this has been incorrect since the S8 when Sammy decided to not make different models for the US market. All S9's built for the US market are physically identical
mobileanimal said:
Perhaps @sw1173 is a dinosaur or a forum troll?
Verizon 4G LTE is not CDMA. It's 4G LTE and fully compatible with 4G LTE used by other carriers around the globe. Verizon 2g and 3g is CDMA, and only still exists to support older cellular data and IoT devices and some dinosaurs using ancients relics for devices. Verizon announced they were planning on completely shutting down their CDMA network the end of 2019, but just recently decided to postpone the shutdown for up to another year. Verizon has been permitting activation of an ever expanding list of unlocked phones for some time now, including devices like the OnePlus 6T that has no CDMA support, just 4G LTE. If you already have a 4G LTE device activated, you can swap the SIM into another 4G LTE device and as long as it has radio band support for Verizon's spectrum (use frequencycheck.com) as well as software support for Verizon's VoLTE settings, you're good to go. They don't seem to have a VoLTE whitelist like AT&T.
Sadly, the bootloader on the US Snapdragon S9 can not be unlocked at this point (no hacks) like the foreign SM-G960F(D)/965F(D) (Exynos with unlocked bootloader) or the SM-G9600/9650 (Snapdragon with unlocked bootloader) in order to install custom ROMs. I suggest everyone avoid US Samsung phones, period, because of this, and be sure to share your discontent with Samsung. Personally, if I were you, I would get the SM-G9600 or SM-G9650 (China / Latin America Version), root it (easy), and flash the files here to get Verizon support:
https://forum.xda-developers.com/galaxy-s9/how-to/guide-sm-g9600-sm-g9650-verizon-t3890695
If you buy or have a carrier unlocked US S9, including from AT&T, you can use it with any US carrier, including Verizon. You'll probably want to flash the Verizon firmware on it to get Verizon features including WiFi calling though:
https://www.reddit.com/r/GalaxyS9/comments/85ci7c/convert_atttmosprint_to_unlocked_s9_guide/
Click to expand...
Click to collapse
in addition to this correct information, id like to add that phones can be debranded by flashing the U1 firmware, but will require a modded Odin in order to get around the write protections put in place meant to stop us from doing that
sw1173 said:
Presently you can't unlock the boot loader on the n960u therefore you can't flash Verizon's firmware. Call Verizon and you will be told they are CDMA and are not changing but are adding capability for 5G after 1/1/2020, which will allow the use of various GSM devices to use their CDMA network.. I just spoke with Verizon sales and their technical support.
Click to expand...
Click to collapse
incorrect. Well, youre right in saying that it cant currently be unlocked or rooted, but you CAN flash verizons firmware. Verizon hasnt been a cdma carrier strictly speaking for a decade. LTE has always been GSM, and ever since vzw jumped on board, theyve been a hybrid at best. On top of that, with VoLTE becoming more and more popular, their cdma transceivers have been getting less and less usage every day. 5G isnt going to be the splash a lot of folks think it will either. New handsets to support a new communication method that just isnt needed in most places. And finally, most handsets produced in the last few years are hybrids, especially those sold in several countries. The biggest exception to that rule is the chinese phones that dont even have cdma radios in them.

Recommended Rootable Verizon Phones?

Hello, I have been with Verizon the last few years and I'm in the market for a new phone. I see on SlickDeals that there is a deal for the Verizon Samsung S10/S10+, but after reading through some of the posts, it seems you can't root the Verizon S10/S10+.
Since I don't need the latest and greatest phone from Verizon, are there any 'older', new in-store models that can be rooted so that I can install a custom ROM, etc?
Thanks in advance!
Your best bet is to get another phone that's not Verizon branded and just activate it on Verizon. You'd be going back a few years to get a Verizon phone that's rootable.
Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?
gil_happy said:
Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?
Click to expand...
Click to collapse
I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features
Cyclone Emperor said:
I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features
Click to expand...
Click to collapse
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.
gil_happy said:
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.
Click to expand...
Click to collapse
I have the international unlocked model of the s10+ U1 version on Verizon and yes maybe one or two LTE bands aren't supported but i get 82Mbps down and 12Mbps up depending on location

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