[Q] cannot connect to cellular networks - One (M7) Q&A, Help & Troubleshooting

hello guys,
i have a HTC one (m7) phone unlocked, rooted, S-OFF which i have converted to GPE and right now has installed 5.0.1. Everything is working fine! except one think, the connection in cellular networks. I have that issue for over a month right now and i don't know what i can do! i have tried to change the setting through *#*#4636#*#* but i noticed that i don't have ip..(IP addr not reachable) any ideas? also an other really weird thing that i noticed is that i can receive phonecalls only in 2G networks.

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[Q] Not staying connected on Metro PCS

I rooted my Sprint HTC One to be used on Metro PCS but I cannot keep a GSM signal for my life on this phone. Once the signal bar drops down to 1 bar then the entire data and voice is disconnected and then I have to go back into my settings and register on the Metro PCS/T-mobile network. Not to mention the fact that Metro PCS/T-mobile does not even give the APN settings to make sure that you send receive MMS but thank god for the XDA-Developers or else I would be SOL. I was previously using the sprint radio 1.00.20.0315 and it was spotty so I flashed T-Mobile radio T-Mobile_US_4A.17.250.20_10.4 that I took from the T-mobile HTC one on here and it was working great for about 3 hours and it began disconnecting again. I do not have the option to roam at all. I did the S-OFF from Revone, I have done the SUPERCID so I can use any carriers RUU’s. I have the SIM Unlock from VIPERBOY. I was on WCDMA preferred but with the T-mobile radio I was able to use GSM/WCDMA/LTE (auto). Can anyone help me keep with either a radio, ruu, or just some insight as to a way to make sure my hard work did not go to waste.
I thought this was a problem with my phone but it is happening to my wife’s Sprint HTC ONE rooted, S-OFF, SIM Unlock as well. I was going to use the cdmadev tool and flash the phone to metro but that would be a waste for me if I wanted to go back to Sprint.

[Q] help with no cellular network

Hi,
I have an HTC One M7 with it's original Vodaphone ROM (UK, vodap102)
Everything was ok but about 2 days ago suddenly it lost it's cellular network.
from time to time it connects but looses it again the moment i try to enable mobile data.
I have tried to reboot, factory reset, tried different SIM cards (from same company) but nothing.
when i go to network operators sometimes it can't find anything but sometimes it finds all the networks around. when i try to connect to my network it tells me it "Your SIM card does not allow a connection to this network"
I had a firmware update as well (sense 6) but after the update was no change.
Is there anything else i can do?
P.S.
The phone is with unlocked bootloader, S-on and is being used in a different country, not in UK. as i said, it worked perfect for about a year in the same cellular network
Please asist, Thanks.
A little update...
If i choose 2G only, it works fine. but only in this mode.
any suggestions what might it be and how to solve it?

[Q] One M7 Dev Edition won't connect to T-mobile 3g

My HTC One M7 Dev Edition hasn't been able to connect to T-mobile's 3g network since December of 2014. I had the phone since august of 2013 and it worked flawlessly until December. I tried changing the settings in the *#*#4636*#*# menu and nothing worked, i tried sending my phone to HTC and the wanted $300 just fix it. I tried a friend's At&t SIM card and it worked with out an issue. I need my phone to work on 3g because that is the network used to make and receive phone calls and text. Does anyone know if this is an issue with the phone or T-Mobile? Thanks!

HTC M8 Sprint 831c Network/WiFi/Bluetooth Problem

Hello Everyone
I have HTC M8 Sprint 831c US unlocked mobile, recently i have updated my Device with Marshmallow. My mobile got some network issue, sometime i can not make a call and sometime my device is unreachable when device got full range. I have also WiFi / Bluetooth issues, I got weak signals. Please help me ......
Even I'm facing the this issue. However, not with Wifi/bluetooth.
I'm generally getting this issue when the network Icon shows 3G.
For now i have switched my network mode to GSM only from *#*#4636#*#* and am able to solve the issues. Still looking for the 3G fix.
Am testing a couple of things and will update if any of those works.
Meanwhile, check in this thread and see if all your band are unlocked.
http://forum.xda-developers.com/sprint-htc-one-m8/general/enabling-3g-umts-countries-t2847461

how to get 3G and H+ work on m7wls

hi guys,
I have a htc one m7(sprint) working on other carrier, but after some signal issues I had to flash it back to stock. things is, I don't know how exactly the former owner had it worked but after the sim unlock I only have edge/2G working, no more 3G. is there a way to make it work again? :crying:
thanx all

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