Develop Bugs

[Q] [Help] Debranded M8 does has no LTE/4G

Hey guys,
I hope somebody can help me with that one.
Ago some days I got my HTC One M8 and its O2 Germany branded.
After going through all the procedure of unbranding(unlocking bootloader,s-off,changing CID,international european Stock Rom) I found myself in a situation with a not working LTE connection on my phone. I've tried fixing it with one app called "LTE OnOff" to force using LTE only but it didn't work.
The international european Stock rom for my phone just gave me HSDPA or EDGE/GPRS connection but not LTE.
After trying some Rom's in the hope of fixing that problem I reverted back to my branded O2 Germany Backup.
Only that gave me again a LTE connection.
Does anybody know how I can fix that problem and have LTE on other roms too ? Or is that not possible ?
Thanks guys I hope my english isn't that bad, I didn't used it for quiet some time ..

Copy your apn from stock Rom. Grab your stock radio. Flash Rom. Flash radio and enter apn. I'm not 100% but I would think this would work for you.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

[Q] No sim detected

Hay guys i just recently flashed my g2 ls980 with stock zve firmware. Everything us working fine except that sim is not being detected no matter what i try. I am really confused as i am a total newbie and am unable to understand technical stuff.

With stock ZVE (that's pure Sprint stock) which SIM are you referring to because with that stock ROM on the Sprint G2 the only SIM card that will ever be recognized at all will be one from Sprint to enable LTE network support.
So... I don't like to assume things, hence the question: what SIM card are you talking about?
The LS980, aka the Sprint G2 variant and the same phone I have, is network locked aka SIM locked to Sprint only if you're running a pure stock ROM which is exactly what ZVE is. The only ways to get the SIM unlocked for other network operation would be a) do a somewhat complicated set of tasks to get it to work (not worth the hassles really and certainly beyond your admitted "newbie" status with respect to this level of tech) or b) install a custom ROM like CloudyG2 (the name just changed today, prior it was known as CloudyG3 but that confused people with the LG G3 and they were trashing their phones trying to install it - it's a G2 ROM ported from the actual G3).
There are other ROMs as well that unlock the LS980 for GSM operation aka regular SIM cards, you may end up using one of them to get proper GSM functionality - LTE support is spotty depending on the networks in your area and the Sprint G2 only supports a few LTE network bands.

Thank you very much for your reply @br0adband. I was able to use my GSM (telenor) sim again but i encountered some problems. Here is the link to my post:
http://forum.xda-developers.com/general/xda-assist/lg-g2-ls980-t3009569
Really sorry for creating a new post as i was unable to find this post in search

Sprint M8 to stock M8

hi there
i have an htc M8 Sprint Device (831C) and i want to change it to a normal stock M8.
I'm in Turkey, I've bought the phone from outside of the country and i can't use some features like wifi hotspot because of the devise is unlocked version. in other words, i want to get rid of Sprint M8 rom.
Is there any way to do this? ıf its possible, how?

deli_yusuf said:
hi there
i have an htc M8 Sprint Device (831C) and i want to change it to a normal stock M8.
I'm in Turkey, I've bought the phone from outside of the country and i can't use some features like wifi hotspot because of the devise is unlocked version. in other words, i want to get rid of Sprint M8 rom.
Is there any way to do this? ıf its possible, how?
Click to expand...
Click to collapse
Your best bet is probably to unlock the bootloader, and load a custom ROM (that specifically supports the Sprint variant), rather than a "stock" M8 ROM.
Reason being, the Sprint version is a CDMA (includes both GSM and CDMA radios) and actually different hardware from the other "GSM" phones (that you are calling "stock"). Trying to "convert" your Sprint version (installing "international" firmware, radios, etc.) is a very bad idea, as it probably won't work, and might even brick the phone.
Quite frankly, you probably bought the wrong variant for your country/region. Just about any version except Sprint/Verizon would have been better, and could be converted to be the "international" version.

oh got it. i think the custom rom is my only chance. thank you for your interest...

[Help] How to understand which version do I have

Hello
It might sound a bit dumb, but let me explain - I've got an unlocked HTC One M8 from e-Bay. I use it as a GSM device on an international network, and originally it is from T-Mobile (according to IMEI and stock ROM).
I want to install custom ROMs on the device, which should I get?
ROMs for the T-Mobile variant (although I am unlocked)? or ROMs from the international version of the device?
Thank you very much.

You can install the generic roms. From "HTC one m8 android development" forum.
I have the same variant of m8.
Can you tell me if you're able to use LTE on your device because I cannot.
{I live in India)
Sent from my HTC One_M8 using XDA Free mobile app

Thank you for your reply.
Gladly, I can use 4G lte as my carrier supports it. The device works perfectly.
However, the battery life with the t mobile stock Rom is just poor, this is why I am looking for a swap. If you guys have a good Rom in mind, please share

What hboot, radio version, and OS number on the bootloader screen?
If you know how, also do a fastboot getvar all. Delete your IMEI and serial number before posting the getvar output, as these are private info.

best radio for telus/koodo

Hi just purchased a used Verizon m8 and i did the s-off and installed a few custom ROMs but I get dropped and weak signal every now and then. Just wondering what the best radio to use for telus/koodo. Thanks.
I am on cm 12.1 great ROM. My radio 1.12.23.1211

vhicke said:
Hi just purchased a used Verizon m8 and i did the s-off and installed a few custom ROMs but I get dropped and weak signal every now and then. Just wondering what the best radio to use for telus/koodo. Thanks.
I am on cm 12.1 great ROM. My radio 1.12.23.1211
Click to expand...
Click to collapse
You did no research. You shouldn't have bought that phone.
Verizon is cdma. Telus is GSM.
I'm on Telus as well using WWE/International firmware.

Telus/koodo and bell in Canada are also a CDMA/gsm company. This phone should have no problems with telus/koodo. How is the wwe firmware do you see a difference in signal. Is your phone root and are you using any custom ROMs.

vhicke said:
Telus/koodo and bell in Canada are also a CDMA/gsm company. This phone should have no problems with telus/koodo. How is the wwe firmware do you see a difference in signal. Is your phone root and are you using any custom ROMs.
Click to expand...
Click to collapse
Click this link, and scroll down to "So can I use my Android device on other networks?" (Actually you should read the whole article. It's quite informative.)
I'll quote the second paragraph from there for you here:
First off, if you have a CDMA handset (the lack of a SIM card is a sure fire indicator) from Bell/Virgin or TELUS/Koodo (that isn't a world phone) or from the US (Sprint/Verizon), it is impossible to use the phone on a Canadian network other than the one it came from as Bell and TELUS does not allow the import CDMA devices from outside their network.
I'll say it again, you didn't do proper research. If you would have bought a GSM phone, you wouldn't be having this issue.
The link also has a chart that shows the compatible carriers for the different bands/frequencies that are available.