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[Q] Radio trouble/Can't get signal after roaming

I have a rooted HTC Sensation running SelfKang's alpha10 CM7. I'm a T-Mobile customer based out of the Minneapolis/St. Paul area. I've had no problems of note with CM7 at all on Sensation. But...
I recently travelled to Florida and had no problem using phone and mobile data (outside of generally spotty network coverage). However, I went on a boat tour that took us several miles off the coast and (presumably) out of normal network range. I was able to access roaming when out there, but when we returned to land, I couldn't connect back to the T-Mobile network. I've tried toggling airplane mode and rebooting, I wiped and reflashed CM7 and I also tried flashing a different ROM (EnergyROM), all to no effect.
I've looked around the forums here and elsewhere and seen a few mentions of similar issues, but none of the proposed fixes I've applied have worked. I haven't changed the APN settings from what they currently show, but I did confirm with another working user that my APN login info is correct. I tried my sim card in my girlfriend's phone (an HTC Espresso running CM7) and it works fine and conversely, her sim won't work in my phone. When I "Search Networks", about half the time I get the "error searching for..." message and the other half it sees T-Mobile and AT&T, but I get "Unable to login to..."
The problem seems to be isolated to my phone (after the sim card test) but I can't figure out if it's hardware or a software/ROM issue. Everything else on the phone works fine (Wifi, programs, etc.) I've stopped short of reflashing a newer or older radio; I'm currently on 10.56.9035.00P_10.14.9035.01_M.
Any tips or fixes anyone can suggest would be much appreciated.
Thanks

reset the apn to default regardless of what you can see then do a battery pull from switched on reboot do a manual network selection should sort it for you

hmm...did those steps. I get the same problem.
Manual search for networks either gets "error searching for networks" or T-Mob and AT&T show up but selecting T-Mob get me "unable to connect at this time". This is all while showing no bars.

Did you try a factory reset?
Sent from my HTC Sensation 4G XE with Beats Audio using xda premium

[Q] HSPA data issue, Help!

Okay so here's what's happened.
My phone is the LG-925g from Rogers, and it's unlocked to work with Koodo. It WAS working just fine.
Sometime around my update to V20c (I don't know exactly when, so I can't say forsure it's the update) data stopped working properly on HSPA. It didn't entirely stop working, just sustained connections.
Let me explain.
On WIFI EVERYTHING works.
On 3G I can browse, check e-mails etc... but I can't download anything. Market I can browse, but not download. Youtube works in the browser, but not the youtube app. Shazam doesn't work. Facebook updates work in the browser, but not the Social+ widget. Weather updates fail.
I can browse and check e-mail and that's about it.
so data IS working, just not properly.
Here's what I've tried....
-Formatting NV partition
-Formatting Cache Partition
-Formatting internal SD Card
-Complete Phone Reset
-Took my phone to a Rogers store, hooked it up to the rogers cell network on a store-sim and it worked great
-Took my sim card to a koodo store, stuck it in a demo android phone, worked great.
- Factory Reset of phone
- (phone was not rooted at time of problem) rooted to install and use networking tools
-went into hidden menu 3845#*925#
-went into Other Hidden Menu: *#*#4636#*#*
-ran every test in hidden menu and looked for settings that may affect this
-Installed APN Remover to remove all APN's except Koodo
-Verified (with a koodo rep) every APN setting and even tried removing some or messing around with them
I'm about to downgrade and re-upgrade my phone to see if that works. Any chance that may fix it? any other possible solutions? I'll even take crazy solutions at this point because netstats pings, etc etc are not showing me anything, I just get a lot of Syn_sent connections without ACK's.
HELP! (And sorry for the wall of text)

have you tried setting up your APNs?

APN's
Yeah, I tried setting and resetting them a few times, even with a rep from the cell company.
I'm losing my mind!
Thanks anyways though!

Im using 21d. Seems to have somewhat similar problem. Getting unstable connections.
My problem:
phone kept switching from H to 3G to G and H again. Speedtest app revealed very low and inconsistent speeds..Reception bar also kept changing.
Phone was previously froyo. Im not sure if it's because of gingerbread baseband. I have some suspicions on that.
Im from Singapore
Sent from my LG-P920 using XDA

Hexark said:
Im using 21d. Seems to have somewhat similar problem. Getting unstable connections.
My problem:
phone kept switching from H to 3G to G and H again. Speedtest app revealed very low and inconsistent speeds..Reception bar also kept changing.
Phone was previously froyo. Im not sure if it's because of gingerbread baseband. I have some suspicions on that.
Im from Singapore
Sent from my LG-P920 using XDA
Click to expand...
Click to collapse
I agree. I think it's a GB thing. I'm on v21a, and I have the issue where upload arrow keep blinking, and I get the H -> 3G-> H.
EDIT:
I'm having this on v10d too

sky ice network issues anyone else?

ok I tried download new UL2 modem I follwed dirrections first off NO ltw (maybe not in my area) but 4g icon only 2nd my download speed like .15mb
then I reflashed the UL4 modem one comes with now I get decent speeds but seems cut off a lot.. this isn't huge issue as I use wifi at home but when im out and about (which havn't tested yet) im not sure.
now I did follow UL2 let modem direction wondering if changed setting RAT setting shouldn't have... if u reflash modem to rat settings go back? when flashing modems back forth I read you delete Dcache and cache which I did but am I missing something? something else do after or something... thanks
when downloading with just network it cuts out stops in middle of download ... i dunno what deal is anyone else got info on this? if I reflash a modem back do i need fix permsions?
well i flashed orginal modem working alright guess thought icerom have better donwload speeds but wow its slick and clean looking I really like it :O) yaaaa

I had no issues with the ucld2 radio while I briefly tried it. I'm going to be honest a say u don't seem experienced enough to be messing with the RAT settings of the radio, and should leave the default settings alone. On first boot after install dial *#2263# and set to auto, then menu > end, and reboot.
Make sure your apn is set correctly, especially if you are with rogers. Using the ltemobile.apn with the skyrocket even in an area without late results in data drop outs, as the phone searches for late signal. Same goes for AT&T. Make sure you are using 3g apn values, which will work fine for 4g.

I'm having the same problem. I tried Sky ICS 4.2a, then 4.2a-8, then 4.2d, and now 4.2a-9.
I've been using UCLD2 on these and had no problems, until today when I installed 4.2a-9 and all of a sudden I can't stay on LTE more than a couple minutes. It drops down to HSPA and drops the data entirely. I've NEVER had this problem, and I've tried every radio there is. I flashed back to UCLC4 and I'm still having the problem.
I'm searching the forums for a fix right now. I might just wipe again and start over with the base/modem.
EDIT: I've tried changing the RAT on both new radios by pulling the SIM, setting LTE/ALL, then Automatic. No change.

3 ROMs only EDGE network

Hi everybody, thanks for taking the time to read.
I am new to ROM work, have successfully installed CWM, nandroid backup'ed my original stock 2.3.3 and installed the three ROMs (Temasek's CM7 build 135, CM7 official build 7.1.0.1 and Hellfire phoenix 2.3).
On all ROMs i can only get EDGE cellular network. I have dialed *#*#4636#*#* to access the hidden phone info.
Current Network - T-Mobile
Network Type - EDGE
The preferred network type is set to WCDMA prefered but I have tried GSM only, GMS auto.
Other settings - Settings/wireless & networks/mobile networks:
*Data enabled
*National Data roaming enabled
*Network preferences - GSM/WCDMA auto (also tried GSM/WCDMA preferred)
*Network operators - T-Mobile and AT&T both appear, have tried T-Mobile and select automatically.
After searching the forums I have tried the following:
1. Restarted in airplane mode, disabled airplane mode
2. Re flashed all three
3. Restored nandroid backup of stock 2.3.3.
Only #3 worked to restore anything beyond EDGE network.
Currently on:
ROM - Temasek CM7 build 135
Included Kernel - 2.6.32.55-cyanogenmod
Baseband - ROM included m6600a-scautnz-2.0.970t 1 (Jul 15 2011).
Any ideas?

Use GetRIL to determine if the RIL matches the baseband. If you don't have it, download/install it from Play Store.

Core Memory said:
Use GetRIL to determine if the RIL matches the baseband. If you don't have it, download/install it from Play Store.
Click to expand...
Click to collapse
Bingo, RIL didn't match baseband, chose the default selected RIL (v21e),downloaded it, refreshed, rebooted, same thing, didn't work.
Then I tried V10f, did the same as ^, still didn't work...
Could I get some expert advice on useage of GetRil?

Update - I have tried all the RILs available, gone into airplane mode, rebooted, killed airplane mode.
Still nothing more than EDGE.
I read in the help section of GetRIL that apparently I need busybox (don't know what it is) so I downloaded it, repeated all the above.
Still nada.
Anybody been here fixed that?
Looks like everybody is working/playing with the new ICS leak toys - calling it a night, any help appreciated tomorrow...really don't want to roll back to dumb 2.3.3 stock with all its issues

mog44net said:
Update - I have tried all the RILs available, gone into airplane mode, rebooted, killed airplane mode.
Still nothing more than EDGE.
I read in the help section of GetRIL that apparently I need busybox (don't know what it is) so I downloaded it, repeated all the above.
Still nada.
Anybody been here fixed that?
Looks like everybody is working/playing with the new ICS leak toys - calling it a night, any help appreciated tomorrow...really don't want to roll back to dumb 2.3.3 stock with all its issues
Click to expand...
Click to collapse
I'm sporting your ROM as well, but live in an area where if I am LUCKY I get EDGE (How, some of NY can be TOTALLY clueless to technology escapes me!!!). When I travel down to Westchester and NYC though, I do get an "H" for my data connection so I believe I'm at least getting a "3G" connection then (as I don't believe it's a true 4G connection with download/upload speeds of only 200kbps).
Once I am there I'll take a look at my settings and see what I get though.

New2my8125 said:
I'm sporting your ROM as well, but live in an area where if I am LUCKY I get EDGE (How, some of NY can be TOTALLY clueless to technology escapes me!!!). When I travel down to Westchester and NYC though, I do get an "H" for my data connection so I believe I'm at least getting a "3G" connection then (as I don't believe it's a true 4G connection with download/upload speeds of only 200kbps).
Once I am there I'll take a look at my settings and see what I get though.
Click to expand...
Click to collapse
Thanks that would be great. I am in an area that does have 4g coverage (from stock 2.3.3 useage).

Only use the RIL that matches the baseband. If you have your network settings properly configured and your phone only gets EDGE, it could be that there's no 3G/4G in the area you're in or there's something wrong with the hardware or firmware. If you are in an area with 3G/4G, CWM your phone with a vanilla ROM and kernel which will elimate those as a reason. If there's still a problem, reflash the .kdz firmware. If there's still a problem, I don't know the solution except for you to take it to a service center and have it diagnosed.

Core Memory said:
Only use the RIL that matches the baseband. If you have your network settings properly configured and your phone only gets EDGE, it could be that there's no 3G/4G in the area you're in or there's something wrong with the hardware or firmware. If you are in an area with 3G/4G, CWM your phone with a vanilla ROM and kernel which will elimate those as a reason. If there's still a problem, reflash the .kdz firmware. If there's still a problem, I don't know the solution except for you to take it to a service center and have it diagnosed.
Click to expand...
Click to collapse
Ok, just for kicks I just restored the nandroid 2.3.4 rooted (ROM?) that was in the dev section, immediately got 4g coverage
Baseband (apparently not included in nandroid backups?) set to M6600a-scautnz-2.097.
Downloaded and ran GetRil - was set to LG-p999-v21y (DOESN'T MATCH BASEBAND)
Network mode was set to GSM/WCDMA auto
APN was set to t-mobile
Phone info (*#*#) was set to WCDMA preferred but actually showed as EDGE in the network type (showing 4g on status bar)
So on all that, the Ril doesn't match the baseband but its still showing 4g connections, lol.
If nobody has any interesting ideas I'm inclined to flash the stock jul 15 2011 baseband, think that could work?

Rolling back to the 2011 baseband will require you following similar instructions as per: http://forum.xda-developers.com/showthread.php?t=1610597 but you will be needing the KDZ file for the 2011 baseband.

New2my8125 said:
Rolling back to the 2011 baseband will require you following similar instructions as per: http://forum.xda-developers.com/showthread.php?t=1610597 but you will be needing the KDZ file for the 2011 baseband.
Click to expand...
Click to collapse
What about going to the new baseband?
Its my understanding that I'll lose bluetooth calling, which isn't a big deal to me if most other things work.
Can somebody point me in the right direction to upgrading to the new baseband or do I just flash the first file on this page (http://forum.xda-developers.com/show....php?t=1776843)

mog44net said:
What about going to the new baseband?
Its my understanding that I'll lose bluetooth calling, which isn't a big deal to me if most other things work.
Can somebody point me in the right direction to upgrading to the new baseband or do I just flash the first file on this page (http://forum.xda-developers.com/show....php?t=1776843)
Click to expand...
Click to collapse
The link I gave you IS the upgrading of the phone to the new Baseband.

[Q] No mobile data after reverting from CM to stock

Okay, so I've been searching the net for days and to no avail. I installed the new Cyanogenmod on my Nexus 5 and found it, well, awful. It kept hanging, restarting etc. Now when I tried to revert back to stock, I downloaded the image file from developers/google/com/android/nexus/images, and there's no 4g. No mobile data whatsoever. I can call, the Wi-Fi is working, but no mobile data. I've tried factory resetting, installing a different radio zip etc. When I install Cyanogenmod again, the 4g works again, but after going back to stock nothing again. Any help?

Wow, this is stupid, but after trying everything, including running every new stock rom, I tried installing the 4.4 (KRT16M) AND IT FINALLY WORKED. I'm gonna leave this up for anyone in the same situation as me.

Well, would you guess, the problem's back, but from a different angle. After installing 4.4.0, and letting the device upgrade itself to 4.4.4, the data worked perfectly. Now I tried to install the android L developer preview and again no data connection.
Does anyone have any idea if it could be a regional issue or something? I tried flashing older radio zip files but to no avail, now back to 4.4.0 .

Try setting a new APN with your carrier settings.

I lost connection all together last Saturday. I flashed CM 11,Friday and all was well. Received a call Saturday, it rang once then lost connection. Had to reboot four times to regain service and that was short lived. After any call incoming or outgoing, I lose service. All APNs are present. WiFi works. SIM alert when SIM is removed. SIM works fine in my N4. Did a complete tear down and it's not hardware related.
---------- Post added at 09:58 PM ---------- Previous post was at 09:58 PM ----------
Sim works fine in my N4 also

If you loose signal might be a radio problem, still if you have signal but no connectivity try with the new APN, android (CM, stock unless carrier stock) had errors in the APN list for my carrier and I had to manually add it each time I used a new rom for several years.

Itsukki said:
If you loose signal might be a radio problem, still if you have signal but no connectivity try with the new APN, android (CM, stock unless carrier stock) had errors in the APN list for my carrier and I had to manually add it each time I used a new rom for several years.
Click to expand...
Click to collapse
im having some trouble with my radio also, it will work fine for a bit, then out of no where, ill download an app and it the signal will just go blank, not grayed out, but blank, ive tryed many different things but not apns, would anyone happen to know what T-mobiles apns are?
Edit: I just now noticed in my list of apns, its set to Metro pcs, and theres a few Tmobile apns, what should i choose?
tmobile
tmobile LTE
or tmobile LTE ipv6?

Andromendous said:
im having some trouble with my radio also, it will work fine for a bit, then out of no where, ill download an app and it the signal will just go blank, not grayed out, but blank, ive tryed many different things but not apns, would anyone happen to know what T-mobiles apns are?
Edit: I just now noticed in my list of apns, its set to Metro pcs, and theres a few Tmobile apns, what should i choose?
tmobile
tmobile LTE
or tmobile LTE ipv6?
Click to expand...
Click to collapse
What were the last few apps you do loaded before this happened to you

BlackElvis79 said:
What were the last few apps you do loaded before this happened to you
Click to expand...
Click to collapse
i think speedtest, advanced download manager, the first time it happend, i had just flashed slimkat 5.10, i set everything up, and i used the LTE quick tile to turn off LTE, my hole signal dissopeared and my phone crashed, i had to restore to stock to get it back. now it does as i discribed erlier.
man, i just got off the phone with a robot from tmobile customer service. she had me turn the phone off and pull the sim card, she told me she "refreshed" my service on her end and the problem was "gone". ya, its not.