Database Develop

huge problem everything works but no signal

i bought a used g1 no physical problems took it into a shop and they couldnt find anything wrong with it internally so im guessing its a software issue....dont know if this guy i bought it from tried to mess with root and messed something up but im thinking its some sort of software stuff....can anyone PLEASE help!?!?!?!?! i either get this phone fixed or keep using my nokia that seems like its from 1998 and its killing me!!!!!!

What are the stats of the phone? You can check the versions in the settings\about phone area. Model #, Firmware version, Baseband version, kernel version and build number information would be helpful.
Is it already rooted? If not, you may want to go ahead and start reading up on the root process. Some of the newer builds may or may not help the issue. But if it isn't rooted and you arent getting a signal, it very well may be a network issue. Also, does your phone service have a data plan? Has the phone gone through and passed all of the sign-in procedure? (being from another country, I am not sure what all you have to do to activate your phone) Sim card good?

thats the problem i did a factory reset to input my gmail info and now i cant get past the damn activation screen! ive been through all the customer support through tmo and cant figure anything out!!! im goin crazy

also ive found this webpage http://developer.htc.com/adp.html that has recovery, system and radio images from htc and every time i try one of them it comes up and says no signature or no verification.......not sure what to do

forum.xda-developers.com/showthread.php?t=452316
you cant apply those because your phone is not rooted. learn what your doing without randomly flashing everything that can killed your phone. and yes, you can kill your phone permanently flashing the wrong **** (i.e radio/spl)

help cant connect to network or save proper network or sms settings

a quick history of what I've done so far
Sumsung I897 captivate from ATT unlock and being used on Telus network was working great for about 4 days, then all kinds of problem started cropping up.
Phone came unlocked, I rooted using update.zip from xda, installed rom manager and started removing ATT bloatware, entered SMS and APN info which worked fine.
Yesterday I noticed that where I once got good reception I was now getting nothing and would have to drive down the street before I would get something descent. I thought maybe I'd put it back to stock with rom manager and see if that would help which it did not. It actually made it worse, decided to go all out and use the Odin3 one click downloader just to make sure I was back to stock firmware. This didn't work either but now I can enter the SMS and change the preferred network type but it doesn't save. Preferred network type is grayed out and even though I can change it it never save same as SMS.
Now I can't hold connecting in my living room where my wifes Milestone gets full bars. I tried taking the phone to where I had the best signal and change the preferred network, SMS, and set the network operator but it doesn't save any info, can't find on operator half the time on manual or auto and gave me an error and logged it to #*9900#
I've been at this for 2 days straight and can't figure out how to get it right back to stock, it seems to keep hanging onto the same preferred network and not saving anything I enter.
What can I do to get back to stock, and it has to be something that wipes everything clean, clean, clean, because even the GSM disconnects stay logged under *#*#4636#*#*
***I desperately even tried pulling the batt and SIM card for the night in hopes that would do something.

So, if I'm understand what happened correctly, you bought an unlocked Captivate, rooted it, deleted some bloatware, entered your Telus APN info and everything worked awesome for about four days. Now everything has gone down the hole. Is that right?
If that is the case, then we need to figure out what changed. Using Odin3 would have definitely put you back to stock/unrooted your phone, I don't think you could go back any further than that. If I were you, I would act like I first got the phone. As in, I would do everything you did to it, as if was day one. At one point, everything worked fine. Try to recreate that. You can always look into exchanging it or perhaps Samsung customer support can give you a little more insight to what's going on. Here's the number if you want to try them out.
Samsung customer service - 1.800.726.7864

Thanks, I've gone through the process a few times today from start to finish trying to figure it out ... maybe some of the problems aren't real problems and just limitations that I didn't know where their. I've since flash with odin3+re-partion to the bone stock i897UCJF6 as in not the one click method. It loaded fine but still have the same issue, I can't set preferred network type or get it to keep the number entered into SMSC. I think if I can get passed that I'll be be one the up side of winning. I keep noticing that the log of GSM disconnects never clears or the usage statistics under *#*#4636#*# , I'm thinking its in the same area that other bad data is being held onto instead of being cleared when flash firmware or factory reset.
Is anyone able to change preferred network type? maybe I was never able to change it but I think I should be able too.
I may be wrong in assuming this but I don't think ATT is going to be interested helping me connect one of their handset that I'm trying to use on foreign network, but I could be wrong and is an open option.

*#*#197328640#*#*
debug screen
phone control
network control
band selection
wcdma band
wcdma all
menu->end
used this to lock my phone to WCDMA only so that problem is solved
*** never mind posted to soon it still didn't stick after rebooting
be carefull using the service menu as I have no idea what most of this stuff does

I got the SMS service number issue fix by taking out my sim, swapping in another known working sim from the same network, setting the service number, pressing update and then swapping back. Before every time I tried to update the service number it spit out an "update error" can anybody tell where the SMS config data is stored? on the phone or sim.
The only problem I'm having now is with reception which maybe fixable if I can set the preferred network to WCDMA only. But the button for that option is a light blue colour vs other phones that I can change this setting on. Does the blue mean anything like a locked function or something that set by the firmware as unchangeable?

[Q] i9000T No signal help

I have a Samsung i9000T that I recently bought from a lady who said she forgot her password to it so she couldn't unlock it. So I bought it and tried factory resetting it so I could sell it to a friend of mine who wants to upgrade from an iPhone 3G. Well factory resetting did nothing, I did some digging and found out that it's a common problem for i9000's to have a csc file corruption. So I decided to flash, via odin, a stock firmware to the device. The firmware I decided on was a UK firmware because I couldn't find an american firmware for it. The flash was successful and I was able to boot the phone no problem. A weird thing was that all of the lady's data was still on the phone, so I contacted her and told her I could backup all of her pics and give them to her, which she happily said yes to. After that, I rooted the phone and installed cwm and then flashed Slim rom android 4.2.1 to the device. I then put a backup sim of mine in the phone and tested the phone. The problem I am having is I don't get any signal on the phone what so ever. I have all the ATT apn's on the phone and they look to be correct.
My question is, having flashed a UK firmware before anything somehow messed up the ability to connect to ATT here in the USA? And what course of action should I take to correct the issue with no signal? My friend is in the military and is being mobilized on the 1st of march so I would like to have a working phone for him before then as I will not see him for some time after.
Any help will be gratefully appreciated. Thanks in advance.

Just a question, has she ever reported it stolen? Has the IMEI number been blocked?
Find out the IMEI number and contact the original Network Supplier that the phone was used on and as them to check this. They'd be able to tell you if there are any issues.
Not trying to worry you but it happened to me. I had to return the phone.

I know the imei, but I don't know the original carrier for the phone... I assume it was ATT because that is the dominant carrier in my area. I'll get in touch with the lady I bought it from and see for sure.
On another note, I've tried testing the internal antenna by inserting a wire into the external port, but still no signal.
I'm going to try completely starting over and see how it goes this time.

Ok, so this thread can be closed now. I've solved the problem.. and feel like such a noob for some reason I was kinda spot on with what i thought was wrong but I had such a hard time finding files to fix it... untill i found this:
http://forum.xda-developers.com/showthread.php?t=1494493
AMAZING guide. Fixed my problem right up. Running 3G here in Texas on ATT. My friend will be so happy that he gets to take an android back over-seas with him.
Thanks to all of those who helped, I greatly appreciate it.

[Q] At&T S4 Active on T-Mobile 4G (not LTE) - Need Help

My wife sat her old Galaxy phone down at a big event we went to... it's gone. So I was looking for a new phone and found an S4 Active from AT&T for really cheap. I talked to T-Mobile and they assured me we would be able to get everything working easily.
So I bought it. Got it unlocked through AT&T. Plugged in my wifes new sim and boom - we're up and running. I changed the APN stuff - the network is T-Mobile and all settings work. She gets talk, text, text pictures, etc. I can get on the internet etc. Problem is we're in a place that has weak LTE and very good Edge. My Note 3 from T-Mobile gets perfect 4G and switches between that and a couple bars of LTE from time to time.
This phone gets weak LTE but then switches to Edge to get a better connection.
Yes I've tried the guides to get the 4G radio working (galaxys4root.com/galaxy-s4-tutorials/how-to-enable-t-mobile-hspa-aws-bands-on-att-galaxy-s4-sgh-i337sgh-i337 etc etc) and I even tried following a guide in here that has me flash the modem back to MF1 or whatever it is through ODEN - that just hung on "Setup Connection" and never did anything.
Look - I know the S4 Active is beginning to get a bit old but it's still a really nice phone and it works great. It's more than my wife needs but we need it to get 4G where we're located. Is there an updated way to get this done? Root and custom ROM? New way to fix the radio? Trust me I've searched all over and haven't found it so I thought I would ask. Maybe I'm just searching for the wrong thing but I need help as to how to do this now - not from posts 2 years ago.
AT&T Galaxy S4 Active SGH-I537
Android Version 4.4.2
Baseband Version I537UCUCNE3
Kernal Version 3.4.0-987011
Anything else you would need to know to help out? I'm at the point where my good deal just isn't a good deal anymore and I'm starting to look at T-Mobile phones instead of unlocked ones. Frustrated. =-(

GS6 Active Network Issues Unlocked

Hello! I Had my Blue Camo GS6 Active 64 Stolen last sunday, Bought A White GS6 Active 64GB Model to hold me over and its in real good condition. But its Network Unlocked and noticed the setting on my 32GB Black And my old Blue 64 phone were set to GSM/UMTS. This for some reason is stuck on WCDMA? I Don't even see a GSM/UMTS Option and was wondering what i should do here?
I Did a few system updates thinking it may automatically work but whoever had the phone before must of changed something, even a Factory Reset didn't solve the issue. So i get the phone in the mail, power it on and everythings good no SIM yet but it had 4 bars, Pop in the AT&T SIM and restart and bam No Signal at all. I Changed it to GSM And get nothing. I Notice if i set to LTE/UMTS When i'm up the road it actually pops up 4G LTE And works too! But i get home and Poof No Bar. Its probably cause it usually does get knocked down when i walk inside to 4G But never no bar.
Anyway i can Flash a Stock OEM Modem? Or a way to force the Network settings to Reset to OEM? Had this... well that GS6 Active for 3 years never had an issue but mine was AT&T Network Locked i never unlocked it. This is Network Unlocked and notice a lot of what seems to be Foreign Networks? Network settings I've never seen before that's for sure.
Help will be appreciated!
Really need this to just work by Monday and AT&T Support sucks lol! Best buy couldn't help me, 3 AT&T Stores couldn't help me cause they don't sell it anymore and i didn't buy from them. But i know its fixable i mean i get signal if i flip around to the WCDMA Setting when i'm home, And before i walk outside i hit LTE/UMTS and i do get a 4G LTE Signal when i get up the street. but i'd rather it Automate like it did before so i don't have to keep doing this.

Yeah this sucks, Like Mint White 64GB S6 Active. Just this i didn't expect. I've Switched sim cards back and forth, took the sim out and tried to change the band but that doesn't work. I've gotten to the Network System menu and put everything on Auto. I Have it set to LTE/UMTS and i get nothing, i take the SIM Out and restart, 4 bars are there. put the SIM In and Boom no signal. I've tried to change the GSM/UMTS Band to Automatic but it just says Unsuccessful. But i have that feeling if i can get it to say Successful it will work.
Anyway to use my laptop to connect via ADB And Force the band to change to auto? Or anyway to get it to stick to Stock settings? I Still suspect whoever had this before did something to the Radio and Network settings and i can't figure it out for the life of me. AT&T sure won't help me lol! And Samsung just wants me to bring it to a repair shop. While i was actually at a few repair shops around here and they know nothing about these.
It's the only phone i'm comfortable with. The S8 Active is ok but without physical buttons it doesn't really serve me like this did... and i don't really care for Bixby button can't be customized. Also noticed Otterbox doesn't make Defender series cases for it so i'd have a bit of trouble getting a beefy case on it.

Ahhh.... i get some signal in WCDMA Preferred. Fixed a SMSC Issue so text's go out and i receive them if i move around a lot.
Signals still bad not like it used to be. Why do i get a Signal On WCDMA But not GSM Auto Or LTE/UMTS? Is there anyone that can help me get to any advanced network option's or a way to change the Band to Automatic? I Try to select Automatic Band which is the default i believe and it just says Unsuccessful.

Have you tried just refalshing stock rom???
I know you already have done this but sometimes it doesn't work first time(few have mentioned issues that took several flashes to solve it)
The reason folks are not replying is quite possible know one has any idea why this has happened.
I had an s6 Active that everything worked other then 4G and nothing worked.. It was a factory refurbed and Unlocked. And no matter what I did it simply would not worked... I returned it and go a replacement... It suggested it had been damaged internaly in someway..
Can you return yours for a replacement/refund???
Sorry am not actually able to help.
regards
Lohtse

I might return it. I figured out why messages were not sending i messed up the smsc settings lol!
Very unique issue here i see 4G pop up and i get calls and data flows. Sometimes 4G LTE magically appears and everything stops working till 4G shows up.
Pretty hard to find this GS6 Active in 64GB anymore.
If i take my sim card out and dial *#*#2636*#*# i think? Or it might be *#*#0011*#*# it brings up network options. I notice if my sim cards in that menu shows up empty. Something maybe wrongly set in there but not sure how to tell. Never found a way to successfully set the GMS/UMTS Band. And with no way to really root it or change anything through the pc is probably going to make this even more difficult. Phones in great condition though i dont think theres damage i believe its a network setting somewhere i missed... or at&t sucks lols! Every sense i got robbed on the 18th its been nothing but a big problem getting a phone working again.

Reflashing stock rom? Like Android 5? Its in Android 7.0.1 now. Id be interested in doing this but going back that far is spooky i dont wanna destroy it. Ive seen people say its possible and others say its not possible to go back.
That would probably work though! When i got my S6 Active Camo Blue 64gb New it was Android 5.0.1 and i think more network options were available. Then in 7.0.1 they all disappeared.
Never had issues on that phone i can't believe it was robbed from me. Not like i dropped it or lost it either it was robbed from me! Police did nothing even with the fact they threatened to kill me and everything. Police did nothing... and after 14 hour shift im not exactly ready to fight with 5 people.