Develop Bugs

Slow WiFi connection

I have noticed that my G2's WiFi connection runs VERY slow. I get speeds of 2mb/s while on a computer I get 25+mb/s. I get the same ping on both devices. Is this a hardware or software limitation that can be solved by a kernel fix?
Sent from my HTC Vision using XDA App

Getting same problem.
Sent using black magic

O.O I don't really post on here but I'm getting pretty good spores on wifi around 12 mps down and 8 up.. would post pic but apparently says the pic is not a valid image format 8(
Sent from my T-Mobile G2 using XDA App

Flippy125 said:
I have noticed that my G2's WiFi connection runs VERY slow. I get speeds of 2mb/s while on a computer I get 25+mb/s. I get the same ping on both devices. Is this a hardware or software limitation that can be solved by a kernel fix?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
There is a thread about the G2/DZ having WiFi antenna issues. This happens when you use the phone in landscape mode. Signal bars drop significantly. In my case, I got totally disconnected (but I had poor WiFi signal strength that time). However, when I remove my hand from the top part of the device, signal strength and speed return. This could probably be your issue, since I really get good speed from my DZ. I could even stream movies over WiFi.

Do you have wifi calling enabled? Try disabling it and restarting. You'll likely see regular speeds again. Works for me every time.

Jigga0o7 said:
Do you have wifi calling enabled? Try disabling it and restarting. You'll likely see regular speeds again. Works for me every time.
Click to expand...
Click to collapse
Nope, I will be looking at the bcm4329 source when I get my computer running to see if I can boost the speed a little.
This may also be a router combatibility problem. So we can narrow it down can people post this:
Router brand/model
Wireless B/G/N
Wpa wep or no security
Hidden access point (yes/no)
And if you are having problems
Sent from my HTC Vision using XDA App

Flippy125 said:
Nope, I will be looking at the bcm4329 source when I get my computer running to see if I can boost the speed a little.
This may also be a router combatibility problem. So we can narrow it down can people post this:
Router brand/model
Wireless B/G/N
Wpa wep or no security
Hidden access point (yes/no)
And if you are having problems
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Router brand/model: Airlink 300N
Wireless B/G/N: Wireless N
Wpa wep or no security: WPA
Hidden access point (yes/no): no
And if you are having problems: Only when wifi calling is enabled. Must disable that and restart in order to get expected speeds. For example, it drops from standard 12mbit to like 1mbit.

Oh yeah forgot to post mine...
Airport Extreme
Wireless N
WPA2
APN is not hidden
Slow
Sent from my HTC Vision using XDA App

I have the same problem with my G2.
Wi-Fi is on all the time when I'm at home, as is Wi-Fi calling because the signal is very weak here. When I first connect to Wi-Fi it's very fast. Normally I get approximately 17mbps down, 3.5mbps up. However, it seems like the connection "goes stale" after a while and I end up only getting about 2-3mbps both up and down.
It's not consistent though. Sometimes it gets slow right away, other times it will take a couple hours. But it always drops to the 2-3mbps range consistently. Plus I always have issues with the connection after it drops in speed: No connection errors, sometimes unresponsive, etc.
To fix it I simply turn Wi-Fi off and back on, but that gets to be a hassle because I have to do it every time I want to use my phone.
It has nothing to do with holding the phone in vertical or horizontal orientation, or signal strength, because even when I'm using the phone right next to the router it still happens. I never had this issue with my Cliq, but it didn't have Wi-Fi calling, which I'm thinking is the cause. Though I haven't tested it to see if it still happens with Wi-Fi calling off.
It happens with any ROM, though currently running CM7 Nightly 27.
Anyone have an explanation, or a solution?

Update: After testing it seems to only happen when wifi calling is enabled. Although I have to turn wifi off and back on to fix it. Simply turning off wifi calling doesn't fix it.
Sent from my HTC Vision using XDA Premium App

[Issue] wifi & dun tethering is unstable

Not sure if this is carrier issue or GNex's issue...
When either wifi or Bluetooth dun tethering, connection is unstable. It would work for couple minutes (maybe 3~5), then lose connection. After couple more minutes, it reconnects again.
Anybody have this issue?
Sent from my Galaxy Nexus using XDA App

Armuro said:
Not sure if this is carrier issue or GNex's issue...
When either wifi or Bluetooth dun tethering, connection is unstable. It would work for couple minutes (maybe 3~5), then lose connection. After couple more minutes, it reconnects again.
Anybody have this issue?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
This is a really old thread, but I have the same issue on mine. I'm in Asia using the unlocked GSM Galaxy Nexus, so it doesn't look like a carrier issue.
I haven't tested Bluetooth tethering extensively, but WiFi hotspot is crazy unstable. It has become a big issue for me. I connect to the hotspot on my laptop, but it stops working after a few minutes to an hour. I have to restart WiFi on my laptop and try again until I get a stable connection. I can connect to friends' iPhones with no problems, so again, it doesn't seem like a carrier issue.
I've changed both radios and ROMs, but the problem persists regardless. I'm currently on the latest AOKP (4.0.3), but I had the same issue on Android Revolution (4.0.2). Also, the issue seems to be present while tethering both through the built-in hotspot function in Settings and the WiFi Tether for Root app.
This is quite a frustrating problem. Hell, it's such a big issue for me that I'm even considering jumping back to an iPhone. Any insight or alternative hotspot app suggestions would be greatly appreciated.

same issue......always had unstable wifi tether....

Wifi tether has been stable for me on 4.0.2 stock. Bluetooth to my late 2008 MacBookPro is hit or miss though. Sometimes it'll go for hours and others it drop every 5min... regardless of signal quality.
Sent from my Galaxy Nexus i9250

[Q] Horrible call quality with Wifi Calling after OTA?

Hi all,
I searched the forums for this topic and haven't been able to find anything that addessess this exactly...
I have a rooted SGS2 with Whitehawkx's rom installed. I have been using it for over a week now and noticed that even if wifi calling is enabled, I often get an "unable to connect" error, then when I actually get the Wifi calling to work, the call quality is really bad.
Has anyone else experienced this? If so is there any kind of fix or work-around?
Thanks!
Madi

Are you using the sim card that came with the device? That could be the problem.
Sent from my SGH-T989

I got a new SIM card when I bought the phone. It does "work" meaning I can usually get wifi calling enabled after a few tries, although not always.
When I call comes in the wifi calling icon goes from blue to green, like it's supposed too, but the calls sounds like the person on the other end has a very bad stutter, so I miss half the conversation...
Madi

In that case I don't know what could be causing that problem. IM currently running juggernaut 4.0 with the new modem and wifi calling is working perfectly. I hope someone can help!
Sent from my SGH-T989

How is the quality of your internet connection?
Sometimes poor internet or local isp might be the problem.
Try running speedtest.net test and report
Sent from my SGH-T989 using XDA App

I am getting 5424 kbps download and 356 kbps upload...

Call quality on Wifi calling could be because of ANYTHING , network related, it is a VOIP based service.
The things that could be causing it,
Internet Connection (not just speed but packet loss)
Router (the type of router , including firewall, and stateful packet inspection, UPNP)
Wireless Access Point, try changing the channel on your AP
and many more things , related to network traffic ..
My call quality bounces from great to crappy depending on what is going on, on my network.

Hi thanks for the info. Tried connecting to a different router, was using my new Cisco, Burr had better quality when connected to my old Belkin. It's stool not great but it's better.
Thanks
Sent from my SGH-T989 using XDA App

just wanted to bump this thread as I am having the same problems stated in the OP.
Info in sig. got a new sim card from tmobile today. got home, connected to wifi calling, worked for about an hour with choppy quality then disconnected. tried connecting again later on and keep getting the "Error REG99 Unable To Connect" message
Tmobile support forums say this is a known issue with the SGS2 but am just wondering if others are experiencing the issue and weather its rom related or the service is down altogether.
i also tried flashing different kernel just in case (faux to darkside) but no results
anybody insight or suggestion are appreciated
will also try flashing Blaze LB7 radio

I have an unrooted Galaxy S4 Spark. I always connect, but the voice is totally unuseable.
It's not my network. I can run video calls on Skype while downloading large files at the same time.
I don't think Sprint has their heart in Wi-Fi calling. I also suspect they have allocated VERY LITTLE bandwidth to support it.

They can't hear me - wifi calls

Been having some issues with callers not hearing me. I tried swapping out the modems (can't remember exactly which ones but can figure it out if necessary), tried different kernels (while I was on TeamSonic rom), and switched from Sonic to FrostyJB and still happening.
I am on wifi calling at my home (crappy signal). It happened on all calls this morning. I made all the above saps and changes this morning as well. I tried a call when I left and was outside of wifi and call worked fine.
This sound like a defect or setting thing? Don't see a lot of settings in the Wifi Calling menu.
Thanks!

There are a few things that could be the problem. You need to determine if it is the phone or the wifi.
What kind of signal are you getting? Are you able to test your wifi for internet? Is this all of a sudden, meaning were you able to use wifi calling without problems prior to this recent problem?

I always had problems with wifi calling so I never use it on my HTC one s and this one too
Sent from my SGH-T999 using Tapatalk 2

pytyper483 said:
There are a few things that could be the problem. You need to determine if it is the phone or the wifi.
What kind of signal are you getting? Are you able to test your wifi for internet? Is this all of a sudden, meaning were you able to use wifi calling without problems prior to this recent problem?
Click to expand...
Click to collapse
It has been happening more frequently lately but I am not really sure on a time frame. I don't make gobs of calls. I have had the phone for about a month or so and didn't have any problems early on. I have tried a few different ROMs but I wouldn't call myself a flashaholic.
My wifi signal at home is pretty decent. My speeds are usually around the 18 - 19 range. No problems with internet. The calls connect pretty quickly.
I do have a cell-fi (sp?) unit on the way from t-mobile which my help but I would just like to try and figure out if something is off with the device.
Thanks!

Information update:
I just made a call from my office (same no cell signal and decent wifi) and call worked fine. Wifi speeds here are a bit slower, usually around 8-9.
Haven't changed router or modem at home. Time Warner Cable is the provider.
Will check my son's phone tonight. He also has the S3 but being a teenager, I am not entirely sure he knows how to make an actual phone call...

Does the problem seem to happen at the same times of day? Depending on how your isp is set up, heavy network traffic can cause the issue. Also remember that your voice going out is like uploading a file on that upstream data is going to be slower than downstream.
Is your cable modem or router kind of outdated? Last year I upgraded my modem and saw a huge improvement. The DOCSYS 3.0 tech is a lot faster than a DOCSYS 1.0 rated modem can handle.
Sent from my SGH-T999 using xda app-developers app

DocHoliday77 said:
Does the problem seem to happen at the same times of day? Depending on how your isp is set up, heavy network traffic can cause the issue. Also remember that your voice going out is like uploading a file on that upstream data is going to be slower than downstream.
Is your cable modem or router kind of outdated? Last year I upgraded my modem and saw a huge improvement. The DOCSYS 3.0 tech is a lot faster than a DOCSYS 1.0 rated modem can handle.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Today it happened around 8:00 am (EST) and again around noon. I'll check the upload speeds as well.
I swapped out the modem about 4-5 months ago. Not sure of the make. It is the one Time Warner provides. Haven't noticed any major problems with our PC though.
Router does have a few years on it.

I suspect that you're getting one way voice translation... the router is forwarding the incoming voice traffic to your phone but failing to do the same for your outbound traffic. I have a Cisco enterprise class router at my house (I'm an IT geek so I *play* with it) and until I opened up a bunch of ports to a bunch of sites I saw being blocked in the router logs I was having the same issue.
I asked T-Mobile for a list of voice gateway IP addresses at their end but none of the tier 1/2 techs were ever able to give me any useful info regarding IP addresses or ports... The phone keeps finding new IP addresses it wants to connect to so in the end I gave up on getting wifi calling working reliably and have mine set to prefer cellular.
A SOHO or Home router ought to automatically open up the necessary ports but I would suggest looking at the manufacturers web page to see if there's a firmware update for your router. If there is, apply it and see if that fixes the problem. Else buy another one and see if that resolves it. If it doesn't then you can always take it back.
Hope this helps

I thought it was just me that had a wifi problem

One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.

Definately check to see if there's any firmware updates for your router like ronin said.
Is it a G or N router? If it is N, check your other devices that connect to it as well. If anything connects to it at 802.11G then all connections with the router can be throttled down to G speeds. If so disconnect the G device, reconnect your S3 and try it again.
Also have you restarted the modem and router recently? Unplug them both from power for about 15-30 seconds. Then plug back in and give it a minute or two for everything to reconnect.
Sent from my SGH-T999 using xda app-developers app

I've been having the same problem all day today. I couldn't quite determine if it's my service or wi-fi, until then, I have it off for now.

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psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.
Click to expand...
Click to collapse
Didn't have to do all of this with V2

psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling. It's possible the signal is so weak it's dropping once you have the phone up to your face and it's moving around and stuff. Try using speakerphone with the phone on the desk or wherever you have some signal. You should also try to get a signal booster from tmo.
Click to expand...
Click to collapse
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!

J_Bone said:
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!
Click to expand...
Click to collapse
Someone told me once they'll send you one for free if you have lousy coverage at your home. Is that true?
Sent from my SGH-T999 using xda app-developers app

J_Bone said:
I didn't know about the cell connection requirement. The cell signal at my house is far north of crappy but the signal in my office is bad as well and no issues. I do have the tmo booster (cell-fi?) on the way. Hopefully that will fix it.
Thanks!
Click to expand...
Click to collapse
Woah.. holding my phone landscape killed my WiFi calling. WiFi went from 3 bars to 1 and WiFi calling disappeared. Holding the phone the other way fixed it.....I just had an iPhone 4 problem
DocHoliday77 said:
Someone told me once they'll send you one for free if you have lousy coverage at your home. Is that true?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
If you had good credit they will and you have to have SOME service. Like 1 bar or w.e.

ronin4740 said:
I suspect that you're getting one way voice translation... the router is forwarding the incoming voice traffic to your phone but failing to do the same for your outbound traffic. I have a Cisco enterprise class router at my house (I'm an IT geek so I *play* with it) and until I opened up a bunch of ports to a bunch of sites I saw being blocked in the router logs I was having the same issue.
I asked T-Mobile for a list of voice gateway IP addresses at their end but none of the tier 1/2 techs were ever able to give me any useful info regarding IP addresses or ports... The phone keeps finding new IP addresses it wants to connect to so in the end I gave up on getting wifi calling working reliably and have mine set to prefer cellular.
A SOHO or Home router ought to automatically open up the necessary ports but I would suggest looking at the manufacturers web page to see if there's a firmware update for your router. If there is, apply it and see if that fixes the problem. Else buy another one and see if that resolves it. If it doesn't then you can always take it back.
Hope this helps
Click to expand...
Click to collapse
I believe you are right on. I could not get my Wifi Calling to function properly at work. Text works great, sending and receiving. My phone rings when I receive a call, but I cannot hear anything, neither does the caller. Similarly, when I dial a number, the other phone rings, but no audio is heard on either end. I called TMobile Tech Support and they read me a memo from Samsung that this is a "Known Issue" with "one-way audio" on wifi calling. A salesperson in the store read to me the same memo. Interesting thing is when I got home, everything works, both voice and text. I tried it at another wifi location and everything works also. But not at work. I am convinced it is a problem with the network at work. Puzzle is that Wifi Calling works great on my HD2 with Custom Rom at work using the same enterprise network. But I would hate to keep swapping the micro sim from the S3 into a sim adapter into the HD2 just to get reception at work. I was hoping the upcoming JB upgrade will solve the problem, but reading the above explanation makes me worried now. Anybody out there with any work around?

isaywedoit said:
I believe you are right on. I could not get my Wifi Calling to function properly at work. Text works great, sending and receiving. My phone rings when I receive a call, but I cannot hear anything, neither does the caller. Similarly, when I dial a number, the other phone rings, but no audio is heard on either end. I called TMobile Tech Support and they read me a memo from Samsung that this is a "Known Issue" with "one-way audio" on wifi calling. A salesperson in the store read to me the same memo. Interesting thing is when I got home, everything works, both voice and text. I tried it at another wifi location and everything works also. But not at work. I am convinced it is a problem with the network at work. Puzzle is that Wifi Calling works great on my HD2 with Custom Rom at work using the same enterprise network. But I would hate to keep swapping the micro sim from the S3 into a sim adapter into the HD2 just to get reception at work. I was hoping the upcoming JB upgrade will solve the problem, but reading the above explanation makes me worried now. Anybody out there with any work around?
Click to expand...
Click to collapse
You'd have to have access to the networking equipment at your work to really know the answer why... Short version is that Home routers/firewalls reflexively open ports when a device inside the network tries to access an IP address. UPnP is an example of this... Enterprise class routers/firewalls don't do this as it's considered insecure. So, you have to know what ports the traffic is coming from/going to and allow traffic on those ports. You also want to know what outside IP address it's destined for so you can lock down that traffic to just certain destinations, not the whole internet...
So, if it doesn't work at your office then there's likely very little you can do to fix it unless you're in the IT department or have a really good relationship with the Network Administrator of your IT department.

psykhotic said:
One thing to keep in mind is you HAVE to have a cell connection to use wifi calling.
Click to expand...
Click to collapse
Lol, really? Show me evidence of this.
What would be the point of Wifi calling if you have a cell connection? I've used Wifi calling since my MT4G and that's a total crock of BS
There would be NO POINT to Wifi calling if you have a cell signal.. common sense...

Note II drops WIFI Calling??

Hey I'm a 1st to T-Mobile i'm testing it out before I switch all my lines from Verizon. The question I have is that both the Note II and the GS3 that I have seem to drop the Wifi calling feature randomly. I thought at 1st it may have been some sort of power saving option but it seems to happen in frequently. (Doesnt matter if I'm close to the Router or not)
Is this common? Or am I the only one that has had this happen?
Thanks for any input!
-Scoob

Mine does the same thing I just turned off the wi fi calling app and it now works fine
Sent from my SGH-T889 using xda app-developers app

somethinboutpat said:
Mine does the same thing I just turned off the wi fi calling app and it now works fine
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
I'm not sure what you mean by turning the App off? When turning the WIFI calling app off does that not mean you are unable to use the feature?? LOL- I have to have this as I have zero reception at my home.
Thanks for letting me know!
-Scoob

scooby-snack said:
Hey I'm a 1st to T-Mobile i'm testing it out before I switch all my lines from Verizon. The question I have is that both the Note II and the GS3 that I have seem to drop the Wifi calling feature randomly. I thought at 1st it may have been some sort of power saving option but it seems to happen in frequently. (Doesnt matter if I'm close to the Router or not)
Is this common? Or am I the only one that has had this happen?
Thanks for any input!
-Scoob
Click to expand...
Click to collapse
Same here
Sent from my SGH-T889 using xda app-developers app

This is happening to me as well.

@ scoob go to setting, more setting, deselect the wifi calling app and it should work for you my coverage at my place is between 0 and 1 bar so this should help
Sent from my SGH-T889 using xda app-developers app

mine goes on and off on both my new note 2 and my wife's new galaxy s3. really aggravating. worse on my phone, when in wifi calling, it only answered calls like 1 out of every 10 times, otherwise they went to voicemail. I took the sim out of mine, then put it back in and pushed it in and out and in the holder a few times and now it seems to receive calls in wifi mode but still always in and out and error to connect and such.

My experience with Wifi-Calling has been nothing but troublesome. It's really not reliable at all, sometimes calls comes through sometimes don't.. and when it does come through I can hear the caller but caller cannot hear me. This is quite common problem with wifi-calling and i given up.
If you get even a 1bar of reception near by the window, I suggest calling T-Mobile and getting their Cel-Fi device (Free of charge but has to return when you leave T-Mobile). 1~2 bar by the window will give you full 4bar reception throughout the house on 4G. Only requirement is that you must be living in single house, can't ship out to house that are connected by or close by. I live in townhouse and I just told them I live in single house and got the device in 3 days. =)

Wi-Fi calling is a disaster. For me, incoming audio drops constantly, but the party I am calling can hear me fine. On other occasions, the call will just randomly drop. Came from a Sensation where Wi-Fi calling was perfect. There does not seem to be any resolution... I have spent hours talking to tech support and they have replaced the device with no improvement. I have also had my ISP out and they have verified that my connection is fine. I have even changed the router out... same issues.

With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2

Nellyinda803 said:
With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2
Click to expand...
Click to collapse
With wifi calling on, it's suppose to drop signal bars to nothing. You have to go by the wifi bars instead.

Wifi also greatly depends on your network conditions. Cause I have the same problem but it doesnt happen to me that often after some tweaking.

Wifi Issue
I have that problem quite a bit but the signal strength on my router is good. Yesterday i had my internet company reset the cable modem and my wifi problems have decreased a lot but it is still happing. It has to deal with the wifi certificate problems on the Note 2 (Samsung). It is the same problem that I had on the GS3.
Oh well

ghost_231 said:
Wifi also greatly depends on your network conditions. Cause I have the same problem but it doesnt happen to me that often after some tweaking.
Click to expand...
Click to collapse
what tweaking did you do?
my internet is rock solid. only good thing about uverse service, yet this wifi calling is in and out and in and out all the time.

robl45 said:
what tweaking did you do?
my internet is rock solid. only good thing about uverse service, yet this wifi calling is in and out and in and out all the time.
Click to expand...
Click to collapse
not much for me, just very little. tried to set up QoS and worked pretty good. until my bro starts playing on his xbox, then im screwed on it lol

No issues here with wifi calling.

Nellyinda803 said:
With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2
Click to expand...
Click to collapse
Uhh, that's the point of wifi calling, to make calls over WiFi and disable your cellular radio. If you turn on Wifi Calling, you should get a blue phone icon on the top left and your "bars" should drop to nothing as your phone turns off the cellular radio. You can still make/recieve calls/sms/mms.
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem? It happens, about 10% of the time and only on my school's network (I have a feeling, it might have to do with the sign in process there).Otherwise, it works well at my apartment.

achusaysblessyou said:
Uhh, that's the point of wifi calling, to make calls over WiFi and disable your cellular radio. If you turn on Wifi Calling, you should get a blue phone icon on the top left and your "bars" should drop to nothing as your phone turns off the cellular radio. You can still make/recieve calls/sms/mms.
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem? It happens, about 10% of the time and only on my school's network (I have a feeling, it might have to do with the sign in process there).Otherwise, it works well at my apartment.
Click to expand...
Click to collapse
i get that certificate problem at my house, not too much anymore, but I still see it. and the wifi calling does drop in and out at various times. not a huge deal for me, but the average person wouldn't deal with that.

achusaysblessyou said:
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem?
Click to expand...
Click to collapse
I've been noticing more & more problems with my service in the last two months. I called T-Mobile to fix it and whatever they did seemed to only help a little. I get times where I get frequent ER01 errors with WiFi & duplicated text messages (same text message gets received by my phone 2-3 times) for an hour or two. I used to also get errors sending texts around that time, but that appears to have gotten better.
Someone else mentioned Uverse, and my WiFi calling problems are at home & work, both of which have AT&T for internet... When I switched from their DSL to Uverse I expected less problems, but got more.

anyadike said:
I've been noticing more & more problems with my service in the last two months. I called T-Mobile to fix it and whatever they did seemed to only help a little. I get times where I get frequent ER01 errors with WiFi & duplicated text messages (same text message gets received by my phone 2-3 times) for an hour or two. I used to also get errors sending texts around that time, but that appears to have gotten better.
Someone else mentioned Uverse, and my WiFi calling problems are at home & work, both of which have AT&T for internet... When I switched from their DSL to Uverse I expected less problems, but got more.
Click to expand...
Click to collapse
Seems to be a problem that a lot of people are experiencing. Just did a quick Google search and some indication points to a possible T-Mobile back-end problem. I wonder if i call up T-Mobile and ask for wifi calling to be explicitly added to my plan if that'll change anything.