T-mobile unlocked 7t lost the signal several time (Day) - OnePlus 7T Questions & Answers

Hello! I have a cellular signal problem on my one plus 7t.
it was t-mobile but now it is unlocked. I use it for GSM Network which has the same bands (also I Had anotherOP7T t mobile unlocked and worked perfectly).
periodly the signal lost and I don't know why.
sometimes I need to restart the phone several times to connect the operator, but sometimes it doesn't work.
Maybe it is a Coincidence, But While charging, when the phone is up to 70% signal is active, after 70% -it will be lost.
Maybe it is a Coincidence.
what can I do? is it a software problem or technical one?

Related

Random Reception problems

My Trinity has decided it's had enough of working and is doing some crazy stuff. Firstly if you have the phone in Automatic registration it never gets signal but will say G or 3G etc. At this point I cannot make or receive calls or texts. The only way I have managed to get it to work is by turning Auto to Manual and selecting the network..yet sometimes this doesnt work, it will show reception but calls and texts still dont work, Data works tho!!
The only way I can get a working phone is selecting GSM from the network type instead of Auto. Obviously it sounds like a 3G/UMTS problem with the phone, Sim works fine in other phones. Have tried reflashing ROM and Radio.
ANy Ideas
are you sure you have good 3G coverage in your area?
I would phone your operator.
I had a similar problem on Vodafone only when set to auto. The phone tries to pick up the 3G weak signal and so it's always droppin off and on.
The guy at Voda suggested that my phone was paired to a 3G base station several KM away, when it could have used the GSM station a few 100 metres away.
A plus of using GSM is battery life lasts much longer!
Of course there could be a hardware fault which would be unfortunate.
Additional suggestions:
sickboy555 said:
are you sure you have good 3G coverage in your area?
I would phone your operator.
I had a similar problem on Vodafone only when set to auto. The phone tries to pick up the 3G weak signal and so it's always droppin off and on.
The guy at Voda suggested that my phone was paired to a 3G base station several KM away, when it could have used the GSM station a few 100 metres away.
A plus of using GSM is battery life lasts much longer!
Of course there could be a hardware fault which would be unfortunate.
Click to expand...
Click to collapse
I assume that you've configured your phone to your operator and that you've tried different radio ROMS to ensure optimal "fit" between your specific PDA and network operator. If you haven't and none of sickboy555's suggestions work, maybe you should check these two alternatives out as well?
Cheers!
hoja67
Well the problem initially started at random, did actually do anything, also I have tried about 4 different ROMS now and all have the same problem. I'm on
In terms of reception I have full 3G signal (4 bars according to the screen) as I am just outside the centre of the city yet nothing comes through but data. tis V strange. I may retry 3G when I'm somewhere else just in case its down to the local Cell.
I've decided to bite the bullet and just disabled 3G most of the time, if I need faster data I'll turn it on for that until I can upgrade to the TyTN 2. mmmmmm

Phone loses reception, restart to get it back?

Love love love my Desire. Few little problems here and there (Music Genre, Battery life etc) but the one main thing that is really bugging me is, that if I lose reception (I live in a area with lots of valleys), it will never regain reception even if I enter a town centre or City. I always have to either switch Airplane mode on then off. Or more often than not, turn the phone off completely and switch it back on, where it then finds reception straight away.
Anyone else getting this?
I'm on Vodafone and using the latest Generic Rom
I'm not sure if this is the same problem, sometimes i
have no data connection (i guess 3x since i have the phone).
I see some bars but no Edge or H (3g) sign and obviously i have not data connection ... dunno if the phone part work, will try next time.
anyway, i could get the data connection back by switching from 3g to GPRS mode and later back. You can see in the bar that for a very short time all GSM connection is gone ... i guess it's similar to switching to airplane mode ...
Maybe it's worth a try for you, maybe it's totally useless
btw: i'm living in a city, the nearest celltower is just a few meters away.
I have similar issues but I had the same issues with my ADP, not just the Desire.
Inside my University buildings I lose reception very often and the GSM connection always reestablishes itself but not the Data connection. When I reboot my phone the same thing happens. There is a good chance that the Data connection wont initialize and I have to switch to Airplane mode and back to get the Data connection. Really frustrating sometimes :/
Another very, very annoying problem I have is that sometimes it shows a data connection but it can't be used. It shows E/3G/H but whenever I start an app which uses data, it always times out.
Another problem, which is probably not fixable, is that my Phone likes to jump between E/3G/H quite a lot and every time it does do so, it seems like the app using the data connection has to reestablish the connection. This led to quite some timeouts when it was constantly jumping around.
I get poor 3G reception on my desire ( orange UK ) , have to go outside in the rain to get a better reception
CharlieCharlie24 said:
Love love love my Desire. Few little problems here and there (Music Genre, Battery life etc) but the one main thing that is really bugging me is, that if I lose reception (I live in a area with lots of valleys), it will never regain reception even if I enter a town centre or City. I always have to either switch Airplane mode on then off. Or more often than not, turn the phone off completely and switch it back on, where it then finds reception straight away.
Anyone else getting this?
I'm on Vodafone and using the latest Generic Rom
Click to expand...
Click to collapse
vodafone have been getting worse and worse of late, I travel from surrey to london (central) every morning and was getting the same thing. I was even getting this all the time with a blackberry 9700, It is not the phone as I tried tmobile sim card in the same areas and didn't have the problem. Only 8 months to go of my contract which I will not be renewing.
I have an issue where if I use wifI at home for an evening, when I switch wifi off, the 3g data connection does not re connect. If I re boot, it connects immediately.
Sent from my HTC Desire
xxnoelziexx said:
vodafone have been getting worse and worse of late, I travel from surrey to london (central) every morning and was getting the same thing. I was even getting this all the time with a blackberry 9700, It is not the phone as I tried tmobile sim card in the same areas and didn't have the problem. Only 8 months to go of my contract which I will not be renewing.
Click to expand...
Click to collapse
the sites around the areas might actually be down try calling and checking that out
CharlieCharlie24 said:
... if I lose reception (I live in a area with lots of valleys), it will never regain reception ... I'm on Vodafone and using the latest Generic Rom
Click to expand...
Click to collapse
Assuming Vodafone uses Sim cards. I just had the same issue, here in the states with AT&T. I thought my Tilt was at fault so I borrowed a little Samsung flip phone and put my Sim in it but it did the same thing.
I had AT&T replace my Sim card and so far, 48+ hours, it hasn't happened again on my Tilt.
Might be worth a try.
holmanm said:
Assuming Vodafone uses Sim cards. I just had the same issue, here in the states with AT&T. I thought my Tilt was at fault so I borrowed a little Samsung flip phone and put my Sim in it but it did the same thing.
I had AT&T replace my Sim card and so far, 48+ hours, it hasn't happened again on my Tilt.
Might be worth a try.
Click to expand...
Click to collapse
Thanks, might try changing the Radio version and see if that helps first, if not will give Vodafone a call.
traspler said:
I have similar issues but I had the same issues with my ADP, not just the Desire.
snip
Another very, very annoying problem I have is that sometimes it shows a data connection but it can't be used. It shows E/3G/H but whenever I start an app which uses data, it always times out.
snip
Click to expand...
Click to collapse
I have this same problem at home (in South London) with my desire and had it with my G1 too (both on T-Mobile). I'm pretty sure it's a network issue rather than android or the phone. I constantly have 3 bars of H signal and during the daytime it's blazing fast but after around 5pm and all day at the weekends it becomes basically unusable with network timeouts more often than usable connections. I work 40 miles away down south and I get a consistently fast data connection down there with none of the time out problems.
I also tried using a t-mobile sim in a 3g dongle and had the same issues, it was great during the day and incredibly slow with loads of timeouts in the eve. It reminds me of when unmetered ISPs first came out and couldn't cope with the amount of bandwidth being used, I'm pretty sure this is a similar capacity problem in some areas.
I've been in touch with t-mobile and they are escalating it to 3rd line support so will wait and see what happens. As it's at home I can use wifi and it's not the end of the world but it some respects I wish I hadn't upgraded and switched networks instead, my gf's on O2 with the phone that is not to be named and doesn't have this problem at all.
In response to your most recent query on a different thread you had posted (now closed):
Will changing the radio help me?
Currently got this issue happening daily
http://forum.xda-developers.com/showthread.php?t=676866
If I lose reception at any point, I have to either turn Airplane Mode on and off or restart the phone to get ANY sort of reception.
Currently on 1.15.405.4 Generic Rom with Baseband version 32.30.00.28U_4.05.00.11
Click to expand...
Click to collapse
Yes, by updating the Radio version this can improve things like battery life, network reception, Wi-Fi, and GPS signal strength, but this also depends on your region - it will either work better for you or could be worse. It may be worthwhile changing to Radio 4.06.00.02 for a few days and try to establish whether or not it improves your situation. If it doesn't, then just revert back to the stock Radio version.
I had a very similar problem on my Touch Diamond 2. It turned out to be a faulty aerial and had to go back to HTC for repair. Worked ok for a while after that, then it started again. An update to their latest ROM then solved it. So a hardware issue and a seperate software issue both produced the same fault for me.

Unlocked HTC 10 issues with T-Mobile

I've just done a bit of traveling with my carrier unlocked HTC 10 on T-Mobile's network, and I've encountered quite a lot of reception issues with this device. I'm not sure what the issue is, but am curious about others experiences road tripping with this device.
Previously I've only used the phone in my home area (Chicago). The device has performed flawlessly there. This past week, however, I road tripped to Maine and back and had a lot of problems with coverage. I'm fairly new to T-Mobile, so I would normally write it off as their network, but my wife's iPhone 6s performed great in these areas, as did my Moto X Pure Edition.
Here are some of the issues I experienced:
In rural Maine, while the phone was roaming on AT&T, many incoming calls and texts would not come through at all. This behavior was intermittent, despite having 3+ bars of AT&T signal.
While the phone was roaming on AT&T, many outgoing texts would fail to send. Rebooting the phone was often the only way to get them to go through. Again, this was with strong AT&T signal.
Moving between AT&T and T-Mobile coverage areas in rural Maine, the phone would fail to reconnect to T-Mobile service on its own. In order to make this work, I would either have to reboot the phone, toggle airplane mode, manually select T-Mobile under Mobile network settings -> GSM/UMTS Options -> Network operators or, if those all failed, run the LTE Discovery app. I'm not sure why that would make the phone reconnect to T-Mobile service, but it seemed to do so consistently.
The phone would lose signal completly in areas where our iPhone 6s and Moto X Pure Edition had LTE signal
The phone would lose LTE signal and move to 2G/EDGE or no mobile data at all in areas where our iPhone 6s and Moto X had LTE signal
I've seen similar issues discussed over in http://forum.xda-developers.com/htc-10/help/awful-lte-signal-update-t3378163, but it seems I'm experiencing more than just weak LTE signal.
Has anybody else experienced anything similar? Or am I having some sort of hardware issue? It seems crazy to me that this device would perform so poorly compared to the iPhone 6s and Moto X Pure Edition, both of which are also carrier unlocked. HTC told me I should try a new SIM, otherwise there might be a hardware issue, but I'm wondering if this is more widespread than just my device.
Haven't had any issues with mine
Sent from my HTC 10 using Tapatalk
I live in Maine and haven't encountered any issues yet. Although I do live in So Maine so T-Mobile is pretty solid here. I would try the new SIM to see if that fixes the problem.
Are you s-off and unlocked? If so which firmware version are you on? The US Unlocked version or something else? If you're not on the US unlocked firmware I would try flashing that, if you're S-Off. If that fails to fix it then I'd suspect a hardware issue.
BladeRunner said:
I live in Maine and haven't encountered any issues yet. Although I do live in So Maine so T-Mobile is pretty solid here. I would try the new SIM to see if that fixes the problem.
Are you s-off and unlocked? If so which firmware version are you on? The US Unlocked version or something else? If you're not on the US unlocked firmware I would try flashing that, if you're S-Off. If that fails to fix it then I'd suspect a hardware issue.
Click to expand...
Click to collapse
I'm on the US Unlocked version--not sure if it's s-off, I haven't done anything to it myself, so I'm using it however it came from HTC. Not sure if they are s-off by default or not.
Unfortunately I won't be back to Maine to test this new SIM this year. I guess I'll have to test locally side by side with my wife's iPhone to try to determine if it's still dropping coverage so regularly once I get out of a metro area.
I have a T-Mobile model that is running unlocked firmware and I experience switching problems when moving from wifi to lte. Simply put, I cannot connect to T-Mobile after leaving wifi unless I reboot the phone.
3's&7's said:
I have a T-Mobile model that is running unlocked firmware and I experience switching problems when moving from wifi to lte. Simply put, I cannot connect to T-Mobile after leaving wifi unless I reboot the phone.
Click to expand...
Click to collapse
Do you use the LTE Discovery app? I wonder if that would work for you too, running though that process once usually made my phone pick T-Mobile signal back up.
Trooper Thorn said:
Do you use the LTE Discovery app? I wonder if that would work for you too, running though that process once usually made my phone pick T-Mobile signal back up.
Click to expand...
Click to collapse
I have in the past on other phones and I will try here
same problem
I had a same experience where my phone roamed onto AT&T network and it would not come back to T-mobile network. This happened when traveling from Michigan to Columbus OH and Michigan to West Virginia.
Both of the time, only way to fix was go to advanced setting and choose carrier or reboot phone.

LTE Connectivity issues

I have a note 4 from att running 6.0.1. Recently the Internet (mobile not WiFi) would start cutting out and completely losing service for no reason every 5 minutes or so. Very agitating if I'm trying to watch a video or do anything on the internet, really. Anyways, I am using Cricket Wireless, which is a subsidiary of ATT. I tried out an ATT sim card as well and the issue is still present. I factory reset my phone and it's still doing it. However, if I ender the developers code into the dialer and brought up mobile network information, I could set the phone to use GSM/CDMA only (no LTE) and the issue went away completely. But now, I have much slower speeds than if I were to be using LTE which kinda sucks. Does anyone know a way to fix this?

Question Horrible signal connectivity?

Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?
Unfortunately for a great manu people, myself included this phone has garbage reception. There is no known fix.
Me to
My troubles began after I updated the phone to A13 enrolling to Beta and then leaving it.
The problem was that the phone will be stuck to H+ all day although weI have good coverage of 4G and 5G in town. Sometimes the connection would just drop and I had to engage flight mode to reset it.
Yesterday I decided that I had enough and did the reset of network settings. Today I have noticed that the problem was solved. Now I have 4g and 5g as in the past. But the problem now is that the Internet just would not work from time to time although it shows full bars. Had to use aeroplane mode again today about 3 times.
It's very annoying to say the least. Had thoughts of changing the phone. Not even speaking about heating issues when on mobile. Horrible.
leafar1606 said:
My troubles began after I updated the phone to A13 enrolling to Beta and then leaving it.
The problem was that the phone will be stuck to H+ all day although weI have good coverage of 4G and 5G in town. Sometimes the connection would just drop and I had to engage flight mode to reset it.
Yesterday I decided that I had enough and did the reset of network settings. Today I have noticed that the problem was solved. Now I have 4g and 5g as in the past. But the problem now is that the Internet just would not work from time to time although it shows full bars. Had to use aeroplane mode again today about 3 times.
It's very annoying to say the least. Had thoughts of changing the phone. Not even speaking about heating issues when on mobile. Horrible.
Click to expand...
Click to collapse
I also have to occasionally switch on/off airplane mode when the phone cannot connect to the internet from time to time
i agree, terrible signal problems, all time. I`ll try to reset all network settings
for me it`s a disrespect from google to treat all final user like beta tester
Same here. Super slow connection even in areas with towers close by.
Been having this issue ever since I updated to Android 13.
Having only had the phone for 2 weeks, I took it to my provider who said all they can do is return it to Google. With both my eSIM and my physical sim dropping out together, apparently its an RIL problem. They did say that if it's just an issue with one SIM card, replacing it will fix it.
I think this can be solved downgrading to android 12.1 dev you can downgrade to android 12.1 without downgrade bootloader it's safe and don't brick your device because it's a android 12 that runs over android 13 bootloader. Keep in mind that this will erase your data permanently! Do a backup before do it
This has been happening since the phone came out. This is due to the old modem they are using from Samsung. There is no fix.
My coworker has this happen with his 6 Pro, while my 6 is perfect ironically. He has verizon, I got tmobile. He has to leave the store to make a call, but I don't. This has been for the last 6 months though
Teet1 said:
Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?
Click to expand...
Click to collapse
Weird because this phone has better signal than my gf s22U IV never had trouble with it dropping like at all, hope use get a fix
TonikJDK said:
Unfortunately for a great manu people, myself included this phone has garbage reception. There is no known fix.
Click to expand...
Click to collapse
Yup! It's crazy and makes me wary of staying with the Pixel line
kevinireland11 said:
Weird because this phone has better signal than my gf s22U IV never had trouble with it dropping like at all, hope use get a fix
Click to expand...
Click to collapse
P6P has better signal than the S22 Ultra? lol #troll
Visera said:
Been having this issue ever since I updated to Android 13.
Having only had the phone for 2 weeks, I took it to my provider who said all they can do is return it to Google. With both my eSIM and my physical sim dropping out together, apparently its an RIL problem. They did say that if it's just an issue with one SIM card, replacing it will fix it.
Click to expand...
Click to collapse
Had the phone sent away to Google for repairs as the issue ended up happening when I was showing my provider. Got it back and Google said there were "no issues" with it and they couldn't replicate it with either SIM type. Either they put out a hotfix or it magically went away, but I'll see how it goes after using it again.
Teet1 said:
Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?
Click to expand...
Click to collapse
If you've got another phone (5G compatible), you can try to see if the problem is the phone, or the actual network coverage.
Also, something else you could do is switch to 4G and see if the problem persists.
The thing with 5G is that the coverage is really spotty. That's in general. I don't live in the US, so I don't know what the actual coverage is over there. But that's a general thing with 5G. It cannot penetrate as well as 4G, and even worse than 3G or 2G. When you increase frequency, you lose distance (coverage). So basically 5G needs a lot more repeaters to get proper coverage.
But you could try another phone in the exact same area. Oor..try to switch to 4G and see if the issue still occurs. You could also call the carrier and ask if they have any idea why is this happening.
arsradu said:
If you've got another phone (5G compatible), you can try to see if the problem is the phone, or the actual network coverage.
Also, something else you could do is switch to 4G and see if the problem persists.
The thing with 5G is that the coverage is really spotty. That's in general. I don't live in the US, so I don't know what the actual coverage is over there. But that's a general thing with 5G. It cannot penetrate as well as 4G, and even worse than 3G or 2G. When you increase frequency, you lose distance (coverage). So basically 5G needs a lot more repeaters to get proper coverage.
But you could try another phone in the exact same area. Oor..try to switch to 4G and see if the issue still occurs. You could also call the carrier and ask if they have any idea why is this happening.
Click to expand...
Click to collapse
Facts, I changed from 5G to LTE as my preferred Network and have much better connectivity
HipKat said:
Facts, I changed from 5G to LTE as my preferred Network and have much better connectivity
Click to expand...
Click to collapse
Same with me. I keep 5G turned off for a couple reasons.
1, battery life.
2. 4G is fast enough for me.
3. Better signal.
p51d007 said:
Same with me. I keep 5G turned off for a couple reasons.
1, battery life.
2. 4G is fast enough for me.
3. Better signal.
Click to expand...
Click to collapse
Oh Battery life for sure. HUGE difference!

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