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HTC One S - Loss of Signal

I recently bought this phone about 2 months ago.
Just got done checking several emails while on 4G. Put the phone down for a minute. Picked it up and lost all signal dealing with the mobile side. It works on WIFI but when it comes to sending texts, making calls or anything that deals with mobile it doesn't work. It says "No Signal Limited service Emergency Calls Only". It has been like this for the past hour and a half. I am currently located in Dallas, TX and I know that we are not going through any outages right now since I used my work phone to call my father's cell which is the same network as mine. If anyone has a clue what is going on, please state. Thank you very much!
It is running Android 4.0.4.
HTC Sense Version 4.1
Stock Rom.
In the NETWORK tab,
Operator Name: Unknown
Signal Strength: 0
Mobile Network Type: Unknown
Service State: Out of Service
Roaming: Not Roaming
I have tried removing the microSIM card and turned off my phone and left it off for about 15 mins. Nothing changed.
Tried changing it to airplane and leaving it for a bit and nothing changed.

Do you have the option to try this microSIM on a different unit, not yours?
Do you have an option to try a different microSIM on yours?

Where did u buy the phone? Sounds like your phone has been blocked.
Sent from my HTC One S using Tapatalk 2

orenfl said:
Do you have the option to try this microSIM on a different unit, not yours?
Do you have an option to try a different microSIM on yours?
Click to expand...
Click to collapse
As of right now, no since I am at work.
I might stop by a T-Mobile during lunch to see if the mircosim is the problem...

igotdez said:
Where did u buy the phone? Sounds like your phone has been blocked.
Sent from my HTC One S using Tapatalk 2
Click to expand...
Click to collapse
I bought it off somebody from Craigslist about two months ago.
I don't think it can be blocked since this is a different microsim and number.

TXRaunchy said:
I bought it off somebody from Craigslist about two months ago.
I don't think it can be blocked since this is a different microsim and number.
Click to expand...
Click to collapse
It's not the sim and number its the phone's imei which gets blocked !! Any way if you want to sell it I can owe you 290$ interested ?
Sent from my HTC VLE_U using xda app-developers app

I went to a local T-Mobile store and they didn't know what was wrong either. Switched to a new sim and it still didn't get signal. Four different people took a look at it and no one knew what was wrong. They just ordered me a replacement phone and should be in a week. I just paid $20 for the shipping.
Now does T-mobile replace phones with refurbished phones or with new ones?

TXRaunchy said:
I recently bought this phone about 2 months ago.
Just got done checking several emails while on 4G. Put the phone down for a minute. Picked it up and lost all signal dealing with the mobile side. It works on WIFI but when it comes to sending texts, making calls or anything that deals with mobile it doesn't work. It says "No Signal Limited service Emergency Calls Only". It has been like this for the past hour and a half. I am currently located in Dallas, TX and I know that we are not going through any outages right now since I used my work phone to call my father's cell which is the same network as mine. If anyone has a clue what is going on, please state. Thank you very much!
It is running Android 4.0.4.
HTC Sense Version 4.1
Stock Rom.
In the NETWORK tab,
Operator Name: Unknown
Signal Strength: 0
Mobile Network Type: Unknown
Service State: Out of Service
Roaming: Not Roaming
I have tried removing the microSIM card and turned off my phone and left it off for about 15 mins. Nothing changed.
Tried changing it to airplane and leaving it for a bit and nothing changed.
Click to expand...
Click to collapse
My phone does the same sometimes but gets fixed after a restart.

TXRaunchy said:
I went to a local T-Mobile store and they didn't know what was wrong either. Switched to a new sim and it still didn't get signal. Four different people took a look at it and no one knew what was wrong. They just ordered me a replacement phone and should be in a week. I just paid $20 for the shipping.
Now does T-mobile replace phones with refurbished phones or with new ones?
Click to expand...
Click to collapse
Consider yourself lucky. It sounds like the guy you bought it from scammed you. Keep your fingers crossed that T-mobile gives you that replacement phone.

Hey guys,
[n00b question]
I didn't want to start a new post, and admittedly I haven't done a thorough search through the One S forums for this issue I'm having, so forgive the thread hijack. I recently acquired a One S (unlocked, unbranded, 'global' version) and after receiving it and placing the SIM in the device -same microSIM as from my SGSIII- the phone acts crazy. I go from bouncing from 3G to H and back several times a minute. I know that can't be right, because I do not have this issue on my SGSIII. Does anyone know what might be causing this?
Also, first time posting in this sub-forum, so please go lightly on me.
[/n00b question]
Thanks guys.

TXRaunchy said:
I went to a local T-Mobile store and they didn't know what was wrong either. Switched to a new sim and it still didn't get signal. Four different people took a look at it and no one knew what was wrong. They just ordered me a replacement phone and should be in a week. I just paid $20 for the shipping.
Now does T-mobile replace phones with refurbished phones or with new ones?
Click to expand...
Click to collapse
I got a new one 3 weeks ago as a replacement.
Sent from my HTC One XL

dc211 said:
Consider yourself lucky. It sounds like the guy you bought it from scammed you. Keep your fingers crossed that T-mobile gives you that replacement phone.
Click to expand...
Click to collapse
The phone they are sending will be at my house tmrw. I will update.

I have the same problem, and unfortunately since I unlock my device I not covered in warranty they said is the motherboard problem and I have to paid around 170€ (live in Portugal)
No more HTC for me I will wait for nexus 4 and keep my HtcPod lol
Sent from my HTC One S using xda app-developers app

Thought I was the only one and that may SIM card was maybe broken but it seems it's an hardware bug or issue.
Eventhough the first 4 months I never experienced this issue but lately is happening as often as 1-2 per day. Using flightmode doesn't help, shutting down the phone neither only a restart temporarily fixes the issue till the next time. Really annoying since I use this phone when I'm on standby and so I need to check every few minutes to make sure I still got a network connection...

Apex_Strider said:
Hey guys,
[n00b question]
I didn't want to start a new post, and admittedly I haven't done a thorough search through the One S forums for this issue I'm having, so forgive the thread hijack. I recently acquired a One S (unlocked, unbranded, 'global' version) and after receiving it and placing the SIM in the device -same microSIM as from my SGSIII- the phone acts crazy. I go from bouncing from 3G to H and back several times a minute. I know that can't be right, because I do not have this issue on my SGSIII. Does anyone know what might be causing this?
Also, first time posting in this sub-forum, so please go lightly on me.
[/n00b question]
Thanks guys.
Click to expand...
Click to collapse
I'm a noob too, but I know that H is 3G. That's regular for it to do.

Any good news after the JB update?
Sent from my HTC One S using xda app-developers app

I had this issue for weeks until HTC released the small update prior to the JB update. Thereafter I never experienced the problem again but this might be pure coincidence, who knows...

bb2htc said:
My phone does the same sometimes but gets fixed after a restart.
Click to expand...
Click to collapse
my phone does the same it looks like. same behaviour with old radio and newest radio that i just flashed.

ippon said:
my phone does the same it looks like. same behaviour with old radio and newest radio that i just flashed.
Click to expand...
Click to collapse
My phone seems to have improve after JB update.

I got the same problem with my HTC One S!
1) I check the ESN and it comes available not reported stolen.
2) I did Factory reset and clear all storage as well = nothing!
3) When i go into phone settings it reads the sim card because you can get the phone number and everything other info from the carrier but nothing! Even i change from GSM/WCDMA Auto to GSM only and back and picks up the Network but it doesn't let me connect..."Your SIM card doesn't allow connection to this network" Message... im giving up guys, any help??

Q(ISSUE) Phone keeps dropping calls

So i have had this issue for a while now and sent the phone to htc twice and still no fixes. Problem is that when i make a call and i have any amount of coverage. The phone call would maybe last anything from 3minutes or more to 1 seconds. It just happens random. When it does happen i look back at the phone, and the coverage is completely gone and then a pop up message box comes up with preparing sim card.
Now i have swapped sim cards and got new sim cards from my provider with no fix. Its coming to the stage where the phone is only good for music, listening to radio, gaming and browsing the net.
Any body got any information regarding this.

You can try setting it to WCDMA only
in dialer, type:
*#*#4636#*#* and then Phone information

usaff22 said:
You can try setting it to WCDMA only
in dialer, type:
*#*#4636#*#* and then Phone information
Click to expand...
Click to collapse
Already tried that. And the main reason why i wont send it back to htc is because after the third or fourth time you send the phone back, they will send you a new phone out. Which means me living in ireland i will get the s3 processor one s(which i dont want)

snwman said:
So i have had this issue for a while now and sent the phone to htc twice and still no fixes. Problem is that when i make a call and i have any amount of coverage. The phone call would maybe last anything from 3minutes or more to 1 seconds. It just happens random. When it does happen i look back at the phone, and the coverage is completely gone and then a pop up message box comes up with preparing sim card.
Now i have swapped sim cards and got new sim cards from my provider with no fix. Its coming to the stage where the phone is only good for music, listening to radio, gaming and browsing the net.
Any body got any information regarding this.
Click to expand...
Click to collapse
i have same issue :S and cant do replacement :S

htcsensation said:
i have same issue :S and cant do replacement :S
Click to expand...
Click to collapse
Right well ill not be buying a htc again

snwman said:
Already tried that. And the main reason why i wont send it back to htc is because after the third or fourth time you send the phone back, they will send you a new phone out. Which means me living in ireland i will get the s3 processor one s(which i dont want)
Click to expand...
Click to collapse
You can ask for the S4 version specifically, whilst on the telephone. If they don't have it, you can tell them that you don't want it repaired.
Sent from my HTC One S using Tapatalk 2

Anyone made a request to Tmobile for this stupid bug?
Sent from my HTC One S using xda premium

[Q] No service on new Nexus 5, but data works

Hi,
Just bought a brand new Nexus 5 from a person wanting to keep his iPhone.
Everything is working fine, except it says "No service" (sometimes with one bar, sometimes with all four). Data is working fine though, but neither SMS/MMS or phonecalls works. Sometimes, when i reset/reboot i doesn't say "No Service", but after one single phonecall it reverts back to "No Service" and only data works again.
Iv'e tried resetting with the firmware on the phone from the start, tried flashing both kot49h and krt16m, tried getting a new sim (which works fine in my old Nexus 3), tried different radio-settings but nothing works for me.
Any thought of, what I can do? (before I ship it off to repair, which would cost quite a lot)
Thanks, in advance!

KristianK said:
Hi,
Just bought a brand new Nexus 5 from a person wanting to keep his iPhone.
Everything is working fine, except it says "No service" (sometimes with one bar, sometimes with all four). Data is working fine though, but neither SMS/MMS or phonecalls works. Sometimes, when i reset/reboot i doesn't say "No Service", but after one single phonecall it reverts back to "No Service" and only data works again.
Iv'e tried resetting with the firmware on the phone from the start, tried flashing both kot49h and krt16m, tried getting a new sim (which works fine in my old Nexus 3), tried different radio-settings but nothing works for me.
Any thought of, what I can do? (before I ship it off to repair, which would cost quite a lot)
Thanks, in advance!
Click to expand...
Click to collapse
Does the phone even show an imei number?
Sent from my Nexus 5 using Tapatalk

justinisloco said:
Does the phone even show an imei number?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yes it does

KristianK said:
Yes it does
Click to expand...
Click to collapse
What's your service provider?
Sent from my Nexus 5 using Tapatalk

justinisloco said:
What's your service provider?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
A European one called Telia, or TeliaSonara, depending on your country. I live in Denmark, and here it's called Telia.

KristianK said:
A European one called Telia, or TeliaSonara, depending on your country. I live in Denmark, and here it's called Telia.
Click to expand...
Click to collapse
Have you tried Settings >More>Mobile Networks>Network Operators and play around with those?
Sent from my Nexus 5 using Tapatalk

justinisloco said:
Have you tried Settings >More>Mobile Networks>Network Operators and play around with those?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yeah, that doesn't work either. Sometimes it can't even find any operators :/

More>Mobile Network Settings>Access Point Names
You need to either update or add your APN for your provider, then everything will work for you. Flashing modems probably won't help you. Also, make sure the Sim card you have is active.

SteveMurphy said:
More>Mobile Network Settings>Access Point Names
You need to either update or add your APN for your provider, then everything will work for you. Flashing modems probably won't help you. Also, make sure the Sim card you have is active.
Click to expand...
Click to collapse
Iv'e checked and double-checked all of the APN-settings. They should be allright. Also, the sim is active (and it works fine in my Nexus 3)

Don't want to look offensive, but are you on wifi?

Dansker her også
The problem you have, i faced that when my old phone got stolen. So less then a week ago my old phone got stolen (got it back, but bought a nexus 5 now :3) i called the insurance company and police to report it stolen, and i got it IMEI locked with the help of the police. And when that happends you wont be able to call or text from it, but your data will work for tracking it.
So my guess is that its a stolen phone and the original owner reported it stolen to the police, and now its IMEI locked.
Try and call the police and give them the IMEI number, and tell them what you told us and ask if its locked.
Great day to you!

GR0S said:
Don't want to look offensive, but are you on wifi?
Click to expand...
Click to collapse
No I'm not ^^
@Zestia , I'll try that, although the websites with blacklist-lookup that I've tried the IMEI with, didn't say that it's stolen.

Did you check to see if your phone is blacklisted for being lost/stolen?
SteveMurphy said:
More>Mobile Network Settings>Access Point Names
You need to either update or add your APN for your provider, then everything will work for you. Flashing modems probably won't help you. Also, make sure the Sim card you have is active.
Click to expand...
Click to collapse
Phone Calls dont use apn settings... Even with no apn settings you are able to make calls.. Well at least in Canada... Not sure about other country but i think it would be the same...
Sent from my Nexus5 using Tapatalk

gd6noob said:
Did you check to see if your phone is blacklisted for being lost/stolen?
Click to expand...
Click to collapse
I'll get a response later today (hopefully)
EDIT: I was :/

NumberSync S3 on AT&T

I'm unable to get it setup on my Note4. I get the incredibly useful message "Backend error" from the AT&T site after I enter the sync code on their site.
Is this a temporary issue you think, or is it just the usual incompetence of an inept software developer who can't be bothered to give meaningful results to help narrow down the cause of an error?
Is it working for everyone else?

Yep, getting the same error message. Hope this is temporary!

I was having a similar issue. On my Gear S3 when trying to get the sync code, it kept giving an error message. Finally after 9:30 central time I was able to generate the code and get it synced. I think the system was overloaded with all the at&t pre-orders being delivered yesterday.

Anyone have AT&T S3 but linking to S7E 935F International phone? Keep trying to set up Numbersync but it connects to my wife's 935A. It won't see my phone. I am running Hydra Rom but the watch is connected with Bluetooth no problem.

For numbersync to be setup, you have to have a username for myatt for that exact phone. Then it will allow you to setup numbersync if that phone is HD voice capable.

I set it up on my Axon 7 without any problems.

Just tried again, same error message

mozartwon said:
Just tried again, same error message
Click to expand...
Click to collapse
Me too.. Pretty infuriating. I don't know if it's temporary or something wrong with my setup/login/config/primary account/whatever because of an inept app developer on their end.

jvrobert said:
Me too.. Pretty infuriating. I don't know if it's temporary or something wrong with my setup/login/config/primary account/whatever because of an inept app developer on their end.
Click to expand...
Click to collapse
According to AT&T International S7E (Exynos) is not compatible with LTE Frontier watch on AT&T due to no HD voice? Can use Bluetooth, but not the Numbersync. I'm pretty PO'd right now as that was why I bought it.

Anybody getting this to work yet?

I have not been able to get it to work. I am using an unlocked tmobile note 4. When I called I was told it was because it was not an at&t phone. What if I change the build prop to 910A from 910T? Would that be enough for it to work? Dont want to try and mess things up.

mozartwon said:
Anybody getting this to work yet?
Click to expand...
Click to collapse
Hi I'm new to this forum. Like OP, I also have a Note 4 ATT LTE and had the same Numbersync error. Here is how I resolved my issue after extensive research:
1) Make sure to enable HD Voice on your phone if supported (for Note 4: Settings->More networks->Mobile networks->Mobile data->check Enhanced LTE Services (mine was unchecked)
2) Before even attempting to sync via Numbersync, make sure that your cell phone number is set as primary in My ATT account. I didn't have a primary number set, so I tried making the Gear S3's number primary (when I was prompted to add one) and it didn't work properly. So I learned it's essential your PHONE (the one you intend to connect with S3) is set as primary, NOT another phone/tablet/wearable line in your account.
3) After all the initial errors and hassles thereafter, I just reset the S3 after following my above instructions and the sync was seamless and I was up and running.
Hope this helps...it certainly worked for me!

Is your phone stock? Rooted? Custom rom? AT&T branded phone?

Yes! That worked, thank you!

highaltitude said:
Is your phone stock? Rooted? Custom rom? AT&T branded phone?
Click to expand...
Click to collapse
Stock ATT, never rooted.
---------- Post added at 05:52 PM ---------- Previous post was at 05:49 PM ----------
mozartwon said:
Yes! That worked, thank you!
Click to expand...
Click to collapse
YW glad it helped! :good:

I too have a note 4 and had no problems setting mine up with the Frontier today. So far I am loving it. It was the only one that my local store had gotten in stock. Now just trying to find out how to get the second hand to start working in the deduct face with the red second hand.
Sent from my SAMSUNG-SM-N910A using XDA-Developers mobile app

dkmac said:
I too have a note 4 and had no problems setting mine up with the Frontier today. So far I am loving it. It was the only one that my local store had gotten in stock. Now just trying to find out how to get the second hand to start working in the deduct face with the red second hand.
Sent from my SAMSUNG-SM-N910A using XDA-Developers mobile app
Click to expand...
Click to collapse
The red pointer is for the chronograph function. It does not move unless you tap it to start the chrono. Bad design in my opinion.

Soo no one here might have an iPhone they were able to get numbersync to work on with the leaked iOS app?

Has anyone got Numbersync to work on International S7E 935F?

I have number sync working with my Nexus 6P, spent about an hour in the AT&T store working with the salesperson that sold me my Frontier. He was under the belief that it was tied to IMEI numbers so he supposedly cloned my wife's IMEI number to my 6P which didn't work. I told him that I read that HD Voice/VoLTE had to be enabled and because I had a Nexus 6P that was the problem. So he called support and asked them to enable HD Voice on my line. While he was doing that I was googling, found this thread: https://forums.att.com/t5/Device-Features/Nexus-6P-No-HD-Voice-and-Wifi-Calling/td-p/4346076 and followed this guide:
Navigate to Settings > More > Cellular Networks and enable the toggle switch for "Enhanced" 4G LTE Mode. However, if the toggle is missing then follow the steps provided below:
Launch the Dialer app on your phone, and dial*#*#4636#*#*.
Choose Phone information.
Enable or select VoLTE Provisioned Flag.
Restart the phone.
Go to Settings " More " Cellular networks and toggle the switch for Enhanced 4G LTE Mode, and the HD Voice calling feature should now be activated on your device running Android 5.1 and above.
Click to expand...
Click to collapse
I enabled the VoLTE option, restarted my phone and sure enough when I went back into the MyATT webpage I was now offered the ability to enter in a sync code and it worked. He was never able to get support to enable HD Voice on their end. Going back into the setting it shows that VoLTE isn't active, I have no HD Voice option or feature in the Enhanced 4G LTE options at all but my number is indeed synced. I left my phone at home, walked the dogs and made 2 phone calls and the number did go over as my cell number.
Now the other thing he mentioned that should work is to use an approved AT&T phone that has HD Voice capabilities enabled. Then if I were to put my SIM in that phone, wait for the MyATT webpage to update showing that this other phone was tied to my number, then perform the number sync at this point it should also work, once it's enabled it won't go away according to the ATT rep. I didn't need to do that so I can't confirm but it sounds reasonable.

T-Mobile Digits

Supposedly their one number solution works with any carrier.
https://explore.t-mobile.com/digits-landing

Not sure how it works with any carrier when the sign up asks specifically for your Tmobile phone number? Lol I did however read about the beta sign up page leaking people's accounts by a glitch in the system. https://www.xda-developers.com/t-mobile_digits_security/

highaltitude said:
Not sure how it works with any carrier when the sign up asks specifically for your Tmobile phone number? Lol I did however read about the beta sign up page leaking people's accounts by a glitch in the system. https://www.xda-developers.com/t-mobile_digits_security/
Click to expand...
Click to collapse
I went to the site and started to opt in for the beta. It presented me a 10 digit number that was not one of my several T-Mobile lines. I went no further.
About 10 minutes later I went back to the site. They have changed the sign up process. You now just sign up (no data exchange) and they will get back to you if you are selected.
Hope it works as I have 2 smartwatches and a phone line on T-Mobile, plus I have a work phone on Verizon. This could make it easier for me to use one number and not have to worry about setting up call forwarding on multiple devices.

highaltitude said:
Not sure how it works with any carrier when the sign up asks specifically for your Tmobile phone number? Lol I did however read about the beta sign up page leaking people's accounts by a glitch in the system. https://www.xda-developers.com/t-mobile_digits_security/
Click to expand...
Click to collapse
According to Engadget, the app will work with the big 4 carriers. They're not sure about specifics yet.

Hmm well that might be cool then!

Just signed up on mine. My Pixel XL and Gear S3 now use/share the same number
Sent from my Pixel XL using Tapatalk

I'm not certain that this is the cause, however, since activating Digits, my S3 doesn't seem to want to connect to the mobile device through the cellular network any more. I used to get all the notifications and now -- nothing. Anyone else experiencing this?
I can't seem to activate the "Remote connection" on the Gear App, so I'm not convinced that the problem is with Digits.
Any thoughts?
Dan

SFVDan said:
I'm not certain that this is the cause, however, since activating Digits, my S3 doesn't seem to want to connect to the mobile device through the cellular network any more. I used to get all the notifications and now -- nothing. Anyone else experiencing this?
I can't seem to activate the "Remote connection" on the Gear App, so I'm not convinced that the problem is with Digits.
Any thoughts?
Dan
Click to expand...
Click to collapse
Quick update: Much as I hated to do it, a device reset on the S3 and a reinstall of the Gear app on the phone solved it. My guess is that the phone and the S3 device exchanged pertinent info from the esim card that changed when the phone number changed upon enrollment in Digits. Redoing the whole thing, I presume, forced this new information into the equation and solved it toute suite.
If anyone has any additional insight, I'm all ears, but I'm good to go now.
Dan