Cell radio drops randomly in US after having used foreign SIM - Device Repair

Trying this forum before I commit to re-flashing ROM.
I'm running lineage 14.1 on an HTC 10, and since I went thru using my phone with UK, Canadian and Mexican SIMs, my radio will randomly completely lose signal on a US SIM, and it seems more frequent when I allow LTE than when I have it set to UTMS only, though it still happens then.
I have to go into #*#*4636*#*# and toggle between gsm only and gsm+LTE, sometimes reboot my phone, and eventually I get signal back with full LTE.
It seems to me like my phone stops searching for towers until I prompt it to do so again by messing with its config and rebooting.
Looking for any ideas before I decide to reinstall my system.

Related

3g Issue - UNUSUAL

Basically, my N1 when on stock worked perfectly with 3g, yes sometimes it was a bit patchy but it worked. I am using my old blackberry sim (UK), with the internet converted from bberry internet to normal.
Everything was going fine until I put my brother's orange sim in my phone (UK) [he also has a stock nexus, although at the time i was on 5.0.0.3 CM] to see if it was just his phone which had a 3g issue. I never managed to pick up 3g while his sim was in my phone, even though 2 blackberry bolds sitting next to it with orange sims in had perfect 3g.
ANYWAY THATS NOT THE ISSUE.
After replacing my sim in my phone, Ive never since had 3g, ever, even on routes I know the signal is immense.
What I want to know is 1) what would swapping sims have done to the phone, 2) what I can do to possibly reverse it so I can enjoy my 3g again
CM .6
Desire CAM + OC/UV
Cheers
I haven't had this same problem but if I were you I would go to your carrier and get a replacement SIM card. The last time I had a weird issue like this I replaced my SIM and all of a sudden I got pure 3G signals everywhere where I hadn't before. If you get the new SIM and it still doesn't work, try wiping and install a completely different ROM (perferably stock) and see what happens.
Hope this helps!
Sellitus said:
I haven't had this same problem but if I were you I would go to your carrier and get a replacement SIM card. The last time I had a weird issue like this I replaced my SIM and all of a sudden I got pure 3G signals everywhere where I hadn't before. If you get the new SIM and it still doesn't work, try wiping and install a completely different ROM (perferably stock) and see what happens.
Hope this helps!
Click to expand...
Click to collapse
But before I put my brothers sim in my phone, my sim worked perfectly fine, so I was thinking it was more likely to be phone than my sim?
Anyone have any ideas?
his sim seems to have disabled 3g somehow in your phone, though I've never heard me that before. have you gone into the info menu and seen if your 3g is still enabled? *#*#4636#*#* on your dialpad.
WHOOPs, yeah I had it off [while we were testing etc] and sort of forgot :/ Which setting is it meant to be on, GSM/CDMA auto?
you want it to be on WCDMA Preferred.
I've set it correctly now, and am getting 'H'. I didn't actually realise that it is a type of 3g network, however I am SURE It used to say '3g'. UK O2 if it makes a difference.
well H stands for HSDPA which is what some ROMs show. so have you flashed to a different custom ROM? either way you are getting correct high speed network, so no worries. my nexus only says 3G even when i'm on HSDPA.
RogerPodacter said:
well H stands for HSDPA which is what some ROMs show. so have you flashed to a different custom ROM? either way you are getting correct high speed network, so no worries. my nexus only says 3G even when i'm on HSDPA.
Click to expand...
Click to collapse
Yeah, CM 5.0.6, although I did see a real 3g today *strokes phone* goooood boy

[Q] Milestone is loosing signal - hardware or software error?

Yesterday my Milestone dropped the network and wrote "Only emergency calls". On other phones there was maximum signal. After a while the phone logged in to the network, but lost the signal again. I thought something is with the ROM, so I made a factory reset but didn't help. I flashed the correct SBF file (first Éclair, then Froyo), but didn't help. I restored an earlier MOD I used without any problem but didn't work.
I always used the German baseband files with other MODs because my Milestone is German.
The problem is that if I make anything (I mean anything related to the data connection), the GSM signal disappears, sometimes data connection remain with no problem, sometimes it is lost, too, but sometimes it has GSM signal with only EDGE network. If I do nothing, just turn off the screen and do nothing, everything goes back to normal, and the phone has normal data connection with GSM signal, I can make or receive phone calls.
I put in another SIM but the issue was the same.
Can I try something related to software and didn't try yet or this is a hardware failure? And if so, what is the price of a GSM module? I couldn't find it.
MOD: It seems that only the 3G is not working (sometimes HSPA does while 3G phone connection don't), with 2G there isn't any problem.
dial *#*#4636#*#*
Under phone info, try a different network type.
It probably defaults to GSM (auto). It does on mine anyway and it's fine.
But maybe WCDMA preferred, GSM only, or WCDMA only will work better.
It depends on which is screwing up... the WCDMA or the GSM
edit: had the dialpad code wrong... again.. geez
lordfreyr said:
Yesterday my Milestone dropped the network and wrote "Only emergency calls". On other phones there was maximum signal. After a while the phone logged in to the network, but lost the signal again. I thought something is with the ROM, so I made a factory reset but didn't help. I flashed the correct SBF file (first Éclair, then Froyo), but didn't help. I restored an earlier MOD I used without any problem but didn't work.
I always used the German baseband files with other MODs because my Milestone is German.
The problem is that if I make anything (I mean anything related to the data connection), the GSM signal disappears, sometimes data connection remain with no problem, sometimes it is lost, too, but sometimes it has GSM signal with only EDGE network. If I do nothing, just turn off the screen and do nothing, everything goes back to normal, and the phone has normal data connection with GSM signal, I can make or receive phone calls.
I put in another SIM but the issue was the same.
Can I try something related to software and didn't try yet or this is a hardware failure? And if so, what is the price of a GSM module? I couldn't find it.
MOD: It seems that only the 3G is not working (sometimes HSPA does while 3G phone connection don't), with 2G there isn't any problem.
Click to expand...
Click to collapse
Are you sure you have applied the correct baseband?
I would tell to re-apply thru AOR.
Sent from my Milestone using XDA Premium App
You could go to settings, wireless and networks and somewhere there there is use only 2g networks and if that is checked, you could try to uncheck it. That is what happened to me before on the froyo mod. Also, you could try turning on airplane mode, then turn it off. Good luck
I always used the German baseband, tried to switch 2G/3G many times, applied the baseband trough OR, applied the RTEU baseband, re-flashed the ROM, the original Éclair, the Froyo, again and again but nothing helped. I gave up I decided to go to the service. Before that on a forum somebody asked something, I gave an answer but I was not 100% sure about it, so I flashed the RTEU Froyo.
And it worked. The 3G, HSPA, 2G, EDGE, phone functions all are working now. My phone is truly German, it has QWERTZ keyboard and the original ROM was the ROM from Deutsche Vodafone (tried that one before, too), it has the logo on its box, and the German baseband files always worked. I don't know what just happened, it's simply working now. Why now... don't know.

[Q] 3g problems nexus one

hello every body
i have this problem with my nexus one when i am connected to 3g service (umts,hsdpa,Etc'). i can't make calls or receive any calls, i can't use the internet (data) or get sms and Etc'. but i have full bars reception. when i check the vi in setting to "use only 2g" the phone work great.
i tried everything downgrade/upgrade roms,radios. i tried to go back to my first backup and even do PASSIMG but nothing help i googled it every where but nothing
please some one can help???
without 3g the smartphone is useless
thanks,
shushkis
What network you on? I would at least see how old the sim card is.
Lots of time if you have an older sim card it just can't handle a newer system.
I am connected through Orange IL
and i tried switching sims even with other networks.
and more the phone worked fine at the beginning it just happened i remember i switch to one of CY roms and it happened
Have you tried a full wipe and reinstall the rom?
yes of course i tried customized roms and stock roms but nothing helped
I would check your apn settings...
apn connected to taking or getting calls?
i thought it's just for internet connection
Its just a guess.
If its a problem on multiple ROMs, its likely to be either hardware or settings. Settings are cheaper and easier to test, and that's the only setting I can think of...?
Of course, doing a full wipe (including system), installing a new ROM, and testing before you restore any apps and settings may be another way to test, but since the apn settings are pre-baked into most ROMs, it wouldn't rule our the apn...?
OK I tried to put apn settings and it didnt help
you say hardware?
but when I check in settings "use only 2g" the transceiver works great .
maybe the nexus have two transceiver one for 2g and one for 3g?
seems un-logical
No there are two radios one for 3g and one for 2g because 2g is for calls and 3g for data but when 3G is unavailable the phone will use the 2g for the data.
The Same Trouble
shushkis,
I have the same trouble, my 3G connection works so bad, but if I use only 2g connection, all works good... I have no idea what happend with my N1. I have a N1 for 3G 850 (AT&T) model.
Thanks for advantage.
So maybe the problem is the hardware? if the N1 have two inidvidul transcivers?
I have also the same problem. I've tried many different roms and radios. I use 900/2100 3G. What's strang is that 3G works perfectly at home, but when moving to another tower I get emergency calls only warning. 2g works fine.
I just started having 3G issues at home. With 3G on the phone reboots like once an hour, but on 2G I've gone days without a reboot. My 3G signal is not the best at home, but I don't know why that would make the phone reboot. I'm on T-Mo USA.
bobbyphoenix said:
I just started having 3G issues at home. With 3G on the phone reboots like once an hour, but on 2G I've gone days without a reboot. My 3G signal is not the best at home, but I don't know why that would make the phone reboot. I'm on T-Mo USA.
Click to expand...
Click to collapse
Go get a new SIM card...
danger-rat said:
Go get a new SIM card...
Click to expand...
Click to collapse
The one I'm using is only a couple months old, and it works well in my Desire HD, and my Moto Defy. It's only the N1, but I guess maybe it could be that. I'll look into more.
If it's only a few months old, then it may nor be the SIM that is the problem. I suggested it because a number of T-Mo users were having similar problems after a recent network upgrade, and a new SIM seems to fix the issue for most...

HTC One M8 reception worse than M7

I just got my new M8 today. Did the update, activated it, did the profile & PRL update, etc.
I am constantly getting the message that I am roaming on data. It seems to go back and forth between roaming and not roaming. Even outside I only get 1 bar of LTE and the LTE signal is a good 10dBvm worse than my old M7. My M7 never switched to roaming in the same location.
Anyone else noticing worse reception on this phone than the old HTC One?
I'm having the same issue.
Sent from my 831C using Tapatalk
I was worried bout the same myself. In the office with the M7, I wan't able to get LTE, but luckily with the M8 I am able too. I would have your phone checked at a corporate Sprint Store to see if it's faulty
kwolf said:
I just got my new M8 today. Did the update, activated it, did the profile & PRL update, etc.
I am constantly getting the message that I am roaming on data. It seems to go back and forth between roaming and not roaming. Even outside I only get 1 bar of LTE and the LTE signal is a good 10dBvm worse than my old M7. My M7 never switched to roaming in the same location.
Anyone else noticing worse reception on this phone than the old HTC One?
Click to expand...
Click to collapse
I had the same issue yesterday when I upgraded my radios to the new version (1.54). I was stuck in 3G roaming at my house which was normally low end LTE service before the upgrade. After flashing the radios I did a Profile and PRL update using WIFI, then restated my M8. After the restart I am back to having LTE coverage floating around -90-95 dBvm. I also notice that if LTE fails to connect swithing airplane mode On/Off helps as well as dialing *18 from the dialer. Hope it helps.
captain008 said:
I had the same issue yesterday when I upgraded my radios to the new version (1.54). I was stuck in 3G roaming at my house which was normally low end LTE service before the upgrade. After flashing the radios I did a Profile and PRL update using WIFI, then restated my M8. After the restart I am back to having LTE coverage floating around -90-95 dBvm. I also notice that if LTE fails to connect swithing airplane mode On/Off helps as well as dialing *18 from the dialer. Hope it helps.
Click to expand...
Click to collapse
I already did the profile/prl updates, and my phone isn't stuck on 3G. It will go 3G roaming, then 3G on sprint, then LTE. Seems to not be able to make up its mind. On my old phone it would usually toggle between LTE and 3G in this area, but NEVER did it go roaming. Even when I'm on WIFI I still get the annoying roaming notification in the notification bar every 5 minutes.
I also noticed my WiFi download speed on wireless AC is significantly worse than my M7. I used to be able to get 70mpbs on a speed test, this phone won't even break 12mbps. When I first turned the phone on it would only work on WiFi for the first 3 seconds after connecting and then it would stop. I had to keep connecting and disconnecting to WiFi to limp the software update download along. After it updated it at least stays connected and working on WiFi, but a lot slower than my old M7.
This phone was purchased on a SWAC account so I'm not sure if a Sprint store (which is 40 minutes away for the nearest one) would swap it for me.
Moved to Q&A...all questions should be posted in Q&A.
Thank You,
BD619

[Q] Verizon LTE / 3g handoff issues

So here's the deal, I have scoured the intarwebs and can't seem that find a solution to my problem, so as such I will toss my problems before you.
I have a Verizon Nexus 6 stock ROM, bootloader unlocked and rooted, TWRP with the current Franco Kernel. No other mods. So here's the issue, I can get LTE, but when the phone hands over to 3g service I get stuck there. The phone remains in 3g until I am forced to go to the cellular network menu and choose lte/gsm/umts so that it ignores CDMA. Once it finds lte again (almost instantly) I can return to global or even the lte/CDMA and have no issues until LTE drops and I have to do it again. I have even gone and got a new SIM with no fix.
Any ideas on a solution

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