Develop Bugs

Problem with data?

Today i went to hilton head from savannah. In savannah i have fine 4g service. once i passed over bored of ga and sc i lost all service. i did not go into 3g nor edge. I also have a vibrant that i carry which kept a 3g service for most of the time. It went into edge for a few minutes but it krept back into 3g. My SGS II never came back into service until i was 5 minutes away from my house. I reset the phone a couple times throughout the day which did not help. has anyone experienced a loss in data with another phone that is on same service have data. This was unexpected and frankly pissed me off. NO GPS, NO INTERNET. all i could do was text. I even had gps on my vibrant (miui latest le) which if you came from vibrant you know its not the greatest gps.
My real question is....Do you think its a defect and should i try to get another one or something im going to have to deal with on the SGS II . I am always going back and forth between the two places.

Next time you take the drive try going to Settings -> Wireless & Network -> Mobile Networks and changing your network mode to GSM only.
You may be onto something because I experience the same thing when at the office. My 4G drops and it won't switch to edge, I just have no service.
If the auto mode isn't working for anyone that really is lame.
I have called CS on this and they didn't seem concerned and just told me to do what I wrote in the first paragraph.
Sent from my SGH-T989 using XDA App

alright i will definitely try that. i appreciate your input. And i agree, very lame.

I'll try to remember to report back how my day at the office goes with GSM only tomorrow.
I'm just glad to see someone else having the problem, no offense or anything.
Sent from my SGH-T989 using XDA App

well i would rather know if its a defect or just unable to switch services automatically before my grace period is up. So please do report back...

It definitely seems like there is an issue with switching between 4g & E. I can't fully confirm but I've been switching them manually today and it's working. If I leave it on auto it never switches to edge even when 4g is at zero bars. Weird. I don't know if this is normal or not cause this is my first real 4g device.
Sent from my SGH-T989 using XDA App

Yeah this is my first time on 4g. I might just go to tmo store and talk to them about it.
Sent from my SGH-T989 using XDA App

They dont know anything about this stuff

How do you switch manually? I have problems inside of buildings, not that I expect it to have a 4g inside, but edge would still be helpful for work email notifications.

Mileman3, look at the second post in this thread for instructions.
On the gs2 GSM is 3g/E(?) And WCDMA is 4g.
Sent from my SGH-T989 using XDA App

Just spoke to Sprint rep about service outage.

So for the past two days I was not able to send or receive phone calls or text on my phone in the Brooklyn NY area. I thought maybe it was something to do with the rom I flashed or that sprint was just having outages. The funny thing is 3 and 4G worked perfectly fine. So this morning tried to call my wife on the using the cell phone and she couldnt receive calls.
So I called sprint this afternoon and they said that there was a problem with a few towers in Brooklyn where the 3g signal was interfering with the singel cell calling.
Supposedly this is suppose to be fixed by 12/21/2011 20:00 est.
Edit:
The rep wanted to do some basic trouble shooting on the phone via the network, so I am wondering would my phone being rooted and romed cause a problem with said troubleshooting.
Edit 2:
I posted this here because at first I thought that it was caused by the rom I recently flashed and I am just giving a heads up to people who may think the same.

Mship said:
So for the past two days I was not able to send or receive phone calls or text on my phone in the Brooklyn NY area. I thought maybe it was something to do with the rom I flashed or that sprint was just having outages. The funny thing is 3 and 4G worked perfectly fine. So this morning tried to call my wife on the using the cell phone and she couldnt receive calls.
So I called sprint this afternoon and they said that there was a problem with a few towers in Brooklyn where the 3g signal was interfering with the singel cell calling.
Supposedly this is suppose to be fixed by 12/21/2011 20:00 est.
Edit:
The rep wanted to do some basic trouble shooting on the phone via the network, so I am wondering would my phone being rooted and romed cause a problem with said troubleshooting.
Click to expand...
Click to collapse
I don't think so, either way it is easy to go back to root.

I called in for Jersey and they said there is an outage. My texts usually fail to send but they say it'll be resolved within the week...
Sent from my SPH-D710 using xda premium

I've been having issues in my part of Brooklyn for months now. Same thing, 3G works fine but texts and calls fail.

Chiming in well i live in brooklyn and i nor my wife have not had any call issues in my area at all.

We are both spilling having the issue. No voice or text via sprint or Google voice. I was told the tower issue in new york was suppose to be fixed last night. But we are still having the problem.
It's funny because the phone works everywhere else except in front or around or in our house. If I go five blocks away from my house the phone works fine.

Mship said:
So for the past two days I was not able to send or receive phone calls or text on my phone in the Brooklyn NY area. I thought maybe it was something to do with the rom I flashed or that sprint was just having outages. The funny thing is 3 and 4G worked perfectly fine. So this morning tried to call my wife on the using the cell phone and she couldnt receive calls.
So I called sprint this afternoon and they said that there was a problem with a few towers in Brooklyn where the 3g signal was interfering with the singel cell calling.
Supposedly this is suppose to be fixed by 12/21/2011 20:00 est.
Edit:
The rep wanted to do some basic trouble shooting on the phone via the network, so I am wondering would my phone being rooted and romed cause a problem with said troubleshooting.
Edit 2:
I posted this here because at first I thought that it was caused by the rom I recently flashed and I am just giving a heads up to people who may think the same.
Click to expand...
Click to collapse
I called sprint and told them i had no service and no data in most of my city.. " what is it, that youre using?" i said "a cell phone..." he said exactly, its used to make calls not to surf the internet
whats funnier yet is that he was about 25 years old..

I'm in a different state and its happening to this area too. In store rep said they are aware of it and they are working on the problem. She said things should be fixed tomorrow friday, at least for my area. Some texts are falling into the black hole and some have come through hours later. Internet works. Texts ride on the phone line and not the data line. Even on wifi texts would fail. Phone calls worked sometimes. Some towers were not affected and some are. The one for my house is intermittent.

If your connected to wifi it only cover data and wont actually place a voice call through wifi right? Just data like picz and internet correct?

I believe so. I think email and internet works on wifi but not calls or text. I thought google voice ran on the internet side but I did see some failures with that too so I don't know,

I don't use a cell phone.
I use a Data Pad or PDA that happens to also have a cellular radio and it can if I want make calls but that is a secondary function.
and thats what I would have told him.
I would have said. you see the unlimited data? see the 500 minutes. Take a guess which I use more hehe

It's strange there seems to be a 5 block radius in my neighborhood where you can make or get calls or text with sprint since Tuesday. The funny thing is it is with all sprint phones and they say they are not aware of an issue. Their are 4 sprint phones in the 3 family building that live in and would have to be at least a 100 or more in the neighborhood. It's seems to only affect he phone during the day because late at night and early in the morning the phones are fine.

Bay Ridge resident here. For about a year now, data fluctuates anywhere between 100 kbps to 1.5 Mbps, but usually in the 200 kbps area. Been complaining for what feels like forever (issue has been there since last January). I've gotten a million and one excuses, taken it all the way up to the office of Dan Hesse (I **** you not). They credited me one month's bill and that was about it. This was a long time ago. I love the fact that Sprint has unlimited data and is cheap, but that's about it. Service itself sucks.

They're sending me an airave. Is that thing worth it?
Sent from my SPH-D710 using xda premium

locoboi187 said:
They're sending me an airave. Is that thing worth it?
Sent from my SPH-D710 using xda premium
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Click to collapse
Just got my airave.. and i figured out why they have no problem sending it out for free... it turns that 5 mile radius around your house into a sprint tower for anyone to use... using the internet YOU pay for...and my calls are still broken up when i make them...the sprint rep couldn't hear me when i was talking to her on it... lol.oh well i guess i changed my prl to a really good Verizon one. I'm happy now
Sent from my SPH-D710 using xda premium

Wait anyone in range can use your airave? It's not locked to YOUR phone?

kdoggy said:
Wait anyone in range can use your airave? It's not locked to YOUR phone?
Click to expand...
Click to collapse
from page 6 of sprint airave faqs @ nextel.com:
/assets/pdfs/en/services/sprint_airave_faqs.pdf
Yes, you can limit access to your AIRAVE device by creating a list of approved
Sprint phone numbers (up to 50 phone numbers). You can create your list by
calling Sprint Customer Service at (866) 556-7310.
Click to expand...
Click to collapse

Yamuu said:
from page 6 of sprint airave faqs @ nextel.com:
/assets/pdfs/en/services/sprint_airave_faqs.pdf
Click to expand...
Click to collapse
I'm assuming most won't... and I'm assuming sprint knows that
Sent from my SPH-D710 using xda premium

Ummm if you don't do it then its definitely on you...not sprint. I have one and I get perfect service at home...full bars. Why complain about that? Its free so yes it its absolutely worth it.
clipsedrag said:
I'm assuming most won't... and I'm assuming sprint knows that
Sent from my SPH-D710 using xda premium
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Click to collapse
Sent from my SPH-D710 using XDA App

Devi0124 said:
Ummm if you don't do it then its definitely on you...not sprint. I have one and I get perfect service at home...full bars. Why complain about that? Its free so yes it its absolutely worth it.
Sent from my SPH-D710 using XDA App
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Click to collapse
You pay for your high speed don't you? Or is that given to you for free? And the average person wouldnt know that u can't do that. To each their own. If u like it then great! I think its a sham. I shouldn't need an extra tower in my apartment to get my cell phone to work.. that is on sprint.. oh and before anything is said about where i live, i am located in the top 5 most populated cities in Michigan. I don't live out in the sticks lol
Sent from my SPH-D710 using xda premium

4g service but no 3g?

This JUST started yesterday...
So, yesterday at work I noticed I had no data...so I did the typical restart...still no data...I shrugged it off and went on my way. As I was driving I had data again. I use wifi at home, so when I got home I didnt notice any issues and honestly kinda forgot about it. Well on my way back to work this morning I looked at my phone...had full 4g service...all seemed well. Then I got to my office...
Now let me explain I DO have 4g in this area but honestly...its only a solid 4g outside. Its not the greatest indoors. Well in my office I only get 4g if I'm standing at the window or one "sweet" spot at my desk. So 99% of the time I'm in 3g. Well to make a long story short my 3g antenna seems to be borked. I can pull 4g fine...on lunch today I was in 4g and it was working great. However, when I'm in 3g I get zero data...my phone doesnt work in 3g only 4g.
I called verizon and they just decided to send me a new phone...
I have rooted my phone and I have put the newest radio on. That was awhile ago though. Tonight I'm going to try flashing a different radio but has anyone else had this problem?
Again I get NO 3g service only 4g. In an area where 4g is spotty thats NOT good.
Thanks!

Yes, I had the same issue. The first Nexus I had gave me spotty 4G service and never went to 3G in the couple of weeks I had it. Amazon sent me a replacement which is rock-solid. I get solid 4G coverage where I should (my wife and several coworkers have LTE phones so I know where I should) and when I don't have that 3G kicks right in.
I think you should definitely expected better results with a replacement. Good luck.

I had chosen to use 3G over 4G to save battery life. After about a week with the phone I began to notice that I can hardly ever get 3G reception any more, even though 4G reception has always been excellent. I don't think it is a problem with the phone, but rather Verizon tinkering with its network.

I was having the same problem all day today.
I switch the phone to CDMA during the day and use the office's WiFi for data. However, I noticed today as I dropped my daughter off at school after lunch that I had voice only and no data. Her school is the first tower north of my office that doesn't have an LTE radio, so I normally just get 3G.
Not today.
I drove back to the office and I was able to get data through the LTE radio, but the data connection would go dead as soon as I switched to CDMA. I thought there might be something wrong with the CDMA tower, but two of my co-workers had Thunderbolts set to CDMA only and they were having no problems getting data connections.
I talked with tech support for a good couple hours this afternoon and they had nothing for me. Eventually I flashed the leaked 4.0.3 radios and CDMA magically started working again.
Did the new radios fixed the problem, or is it just a coincidence?
Hmmm...

I have been having the same issue since yesterday. Verizon said there is no outages in the area. I had no data all the way home from CT to NY and finally when I got home at night 4G worked. 4G was working in and out on my way in so I forced CDMA to see if that worked and I have been unable to get anything since. I have a new SIM coming today, but somehow I do not think that will solve the issue.

I've noticed this too. I was turning my LTE off thinking it would use 3g, but I'm noticing now that many times I either have 4g or no data at all.
Sent from my Galaxy Nexus using Tapatalk

I'm having the exact same problems and registered here to see what the resolution is. I'm apprehensive to root as I am still within the 15 day return window and quite frankly for 300$ I think this is total BS. Never had a dropped call, missed or unsent text on the 3g network on my old Dinc and I've lived in the same place for 2 years.
OP- could you keep this updated on how your new device works out?

same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App

justin94 said:
same exact thing happened to me. I'm already on my second nexus and I didn't want a refurb or to lose root. So I flash android revolution hd , used tb to delete all my apps, and hid all signs of root including deleting su. I took it to Verizon and they gave me a new sim card. It was OK for about a day then started acting up again. So I called them from my wife's phone and they had to reset my number to the network and its been fine since
Sent from my Galaxy Nexus using XDA App
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Click to collapse
What do you mean by reset your number to your network? Never heard that term before

I'm not exactly sure, some techs don't know about it. When I had my charge it had no data. So they reset my number and phone to the network and I immediately got data back
Sent from my Galaxy Nexus using XDA App

wimax no longer working

so here's the deal, I've been using blazer 4.0 and everything is great. I have always had wimax and so these last two days I've been tethering my phone to my ps3 (battlefield 3) and so today all of a sudden it doesn't work anymore. I called Sprint and no help, back to stock nothing, rooted again and tried this http://forum.xda-developers.com/showthread.php?t=1447615 but no luck. I changed the "realm" to clearwire and my 4g connected but obviously took me to a clearwire page that asked me to purchase a plan. I've used 8gb this month and I know for a fact my 4g radio works...any ideas ? please guys just try and help.

I have the same issue today. Phone runs stock rom, no root no tether. And today I can't pick up any 4G signal. Don't know the reason.

yeah I have no idea what the hell
laufine said:
I have the same issue today. Phone runs stock rom, no root no tether. And today I can't pick up any 4G signal. Don't know the reason.
Click to expand...
Click to collapse

Maybe theres an outage? Where are you guys?

I'm in West Covina CA but no it can't be an outage because my brothers ns4g connects fine
Sent from my SPH-D710 using XDA

I though I was the only one with this issue. Charlotte, NC here

I know this is going to sound backwards, but I live in Long Beach, CA and I couldn't get anything but 4G service, my 3G was always on 1x and terribly slow. That has been since Monday, then yesterday evening updated my PRL and both went back to normal or I got my 3G back. But 4G was the only thing that was working.....
I'm also running Phantom 4.0 btw

West of texas 4g is working and been working fine
Sent from my SPH-D710 using xda premium

This maybe a long shot but there was a lot of solar activity that was messing around with electronics. It could be possible that the radios on our phones are more susceptible to this introduction of noise then others. If the phone isn't behaving better today or tomorrow then the problem is likely something else.

My 4G connectivity has been coming in fine until it became non existent since yesterday. Not really sure why, but doing a bunch of resets doesn't help for me as well. The 4G indicator comes on, but no signal bars appear. Hmmm...
Oh, and I'm in Ontario, CA. SoCal tower down perhaps?
Sent from my SPH-D710 using XDA

We were in a major solar storm yesterday, it may have had an effect on the towers and/or some of our phones. Try updating prl and profile, see if that works. I'm in Seattle and no problem here but I just got my E4GT so I was flashing and checking out different roms all day.
Sent from my SPH-D710 using xda premium

Thanks guys, even if the solar storm interupted my connection then why do it connect to clearwire? It has to be Sprint and I'm not paying for them to check out my phone when clearly they're the ones controlling it
Sent from my SPH-D710 using XDA

OMG i just started a thread about this.... I thought i was the only one. My gf with an OG Epic connects fine.....my 4g stopped connecting about yesterday...
Forgot to mention I also have a verizon 4g aircard from work and it was working beautifully today with no slow downs or problems

Follow-up from my initial response...
I called Sprint tech support and they had me do the basic pull the battery, reset the phone exercises, but nothing worked. They told me that there was no outage in my area (SoCal) so they escalated me to the 4G team (Tier 2 support).
After about an hour of going through the same exercises, the tech support person opened up a ticket and mentioned that he's been noticing a lot of complaints today of the same issue. He also mentioned something about "dual mode services" not provisioning. Not really sure what that meant, but he told me that he doesn't think it's a hardware issue, but a Sprint side issue which he thinks should be resolved in the next day or two. Regardless, he created a ticket anyway to take with me to the Sprint store if I decide to get it checked out sooner than later.
I guess I'll wait a day (or two) to see if it resolves itself. I'll follow-up with another post if anything tangible happens within this time.

The dual mode comment might refer to the fact that our phones are dual mode-wimax and LTE, from what I understand sprint is going LTE around June or July. Or at least that's what the manager of the store I bought my E4GT at said.
Sent from my SPH-D710 using xda premium

I live in the Hacienda Heights CA, and work at La Punte, city of Industry. I called sprint today, tried to update my prl and profile, but it still doesn't work. Maybe I can wait the sun storm pass out.

Ok ok, here's what happened. This problem started Thursday morning and so after doing the battery pull and blah blah blah I finally went to a Sprint store early Friday morning. While waiting for a tech I notice two e4gt on display so like anyone would went over and tested 4g on them, nothing...tried the og epic and without a problem it connected. I told the tech and he pulled out his e4gt and same thing...nothing so I called tech support today and told them and they startdd a ticket saying they would have a tech check it out...i later called and the tech said "oh there's an outage in your area" but I don't know because Sprint employees aren't always very consistent. I think it might have to do with our dual band but I did ##data# and changed the realm to clearwire.wmx.net and connected to 4g like nothing but when i set it to sprintpcs.com it disconnects so I am beyond confused
Sent from my SPH-D710 using XDA

Update:
As of this AM, my 4G is still toast. However, on my way from Ontario, CA to LAX, my phone locked into a 4G signal around the Downey area (105 fwy). I figure this issue isn't due to my phone crapping out on me. So I placed another call into tech support and they just confirmed with me that the towers around my area are down and they apparently have engineers working on getting them back up. ETA for a fix is 6PM tomorrow. 3/11.
I guess I'll have to wait and see...
Sent from my SPH-D710 using XDA

I live in SE TX near Galveston island but im on mainland. I have 4G where I live even though it's not included in the coverage map. I usually get 1 bar inside my house and it works fairly well. Occassionally my 4G will not connect no matter what I do. It goes out for several hours and will start connecting again by early morning. It has done this several times but I really can't complain because according to Sprint, WiMax isn't supposed to be available in my city. But anyways this seems to be caused by either maintanance/upgrades or possibly cloud coverage/solar interference. It always works again after a few hours of downtime. This is my experience.

hypershark said:
Update:
As of this AM, my 4G is still toast. However, on my way from Ontario, CA to LAX, my phone locked into a 4G signal around the Downey area (105 fwy). I figure this issue isn't due to my phone crapping out on me. So I placed another call into tech support and they just confirmed with me that the towers around my area are down and they apparently have engineers working on getting them back up. ETA for a fix is 6PM tomorrow. 3/11.
I guess I'll have to wait and see...
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
I'm in San Bernardino about 20 minutes from you. My 4g has been completely gone for the last 2 days as well. At my house near Cal State, it's been perfect since June 4, 2010 (original evo release date) and only now has it ever gone out like this. Very frustrating as I rely on it a lot since the 3g at my house is virtually non-existent. Shoot me a PM if you get a signal or hear anything from sprint. Thanks.

(T-Mobile) Randomly Losing Signal

My gsiii for some odd reason loses 4G and sometimes even service. Last night when i was on a call, it dropped and the signal reflected that i was running on edge then it switched to someting that said "G." I looked at my brother's siii and he was also on edge. So i tried putting it on airplane mode however it would not go through. It's as if i never pressed anything. So i had to restart the phone and it was on airplane mode, so i took it off then about a minute and a half later i got 4G back. Today when i was browsing the web, i randomly lost 4G again but this time i continued to have signal just no data. About a minute later I got it back. About a minute later i lost it again and regained it about a minute later. I havent noticed anything else about the phone and ive had it for about a week and last night was the first time that i restarted it. Any ideas? Has anyone else experienced this? Thanks!

I'm also having the same problem it just happened to me today also and happened the other day when I restarted phone it did nothing then I did airplane mode that didn't do anything so I clicked the enable packet data off then on an item came back in hoping it's not going to be a hardware problem cause I've dropped calls for no reason and had no service or bars were showing but had no edge 4G etc
Sent from my SGH-T999 using xda app-developers app

ballenone said:
I'm also having the same problem it just happened to me today also and happened the other day when I restarted phone it did nothing then I did airplane mode that didn't do anything so I clicked the enable packet data off then on an item came back in hoping it's not going to be a hardware problem cause I've dropped calls for no reason and had no service or bars were showing but had no edge 4G etc
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Yeah it's really weird, when I was using mt4g, it would do that randomly as well, I'm not sure if it's a phone or a network issue. Anyone else experiencing this random drop in data?

Same here I think it's a common issue with tmobile devices.
Sent from my SGH-T999 using xda premium

I think is just the network it had happened to me but while driving some place and Idk if is the coverage but other then that I do see going from h+ and 3g, I have a custom theme install
Sent from my SGH-T999 using Tapatalk 2

I just moved from Sprint to Tmo and I'm getting the same on my S3. It would look like i have good 4g coverage with 3 bars then all of a sudden it goes to Edge. So I have to wait for it to go back to 4g to start surfing. Edge is like 15kbps for me which is not even modem speed which is 56k. If I accidentally start surfing on Edge it seems to wanna stick to Edge until I close whats using data then it will eventually go to 4g. But when I get 4g its awesome and I get over between 6meg to 12 but only 40% of the time. I called Tmo and they said I have great 4g coverage where I'm at....ya sure.

aznmode said:
I just moved from Sprint to Tmo and I'm getting the same on my S3. It would look like i have good 4g coverage with 3 bars then all of a sudden it goes to Edge. So I have to wait for it to go back to 4g to start surfing. Edge is like 15kbps for me which is not even modem speed which is 56k. If I accidentally start surfing on Edge it seems to wanna stick to Edge until I close whats using data then it will eventually go to 4g. But when I get 4g its awesome and I get over between 6meg to 12 but only 40% of the time. I called Tmo and they said I have great 4g coverage where I'm at....ya sure.
Click to expand...
Click to collapse
Ha ha tell them to give you credit Lmao
Sent from my SGH-T999 using Tapatalk 2

It's them rebooting equipment due to all the upgrades they're adding.
Sent from my MyTouch 4g

hedjemunkee said:
It's them rebooting equipment due to all the upgrades they're adding.
Sent from my MyTouch 4g
Click to expand...
Click to collapse
This is very good for a lot of reasons!! Can't wait.
Sent from my SGH-T999 using Tapatalk 2

I just checked settings... battery... cell standby... 45 percent without signal.... anyone else check those stats? I got people telling me they called but no record on my phone

cwalker0906 said:
I just checked settings... battery... cell standby... 45 percent without signal.... anyone else check those stats? I got people telling me they called but no record on my phone
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Click to collapse
I've only experienced outright loss of signal once, which was last night. So far nothing else has happened really. It was just odd that my phone won't even go into airplane mode until I rebooted the device.

Same thing happened to me. I was actually quite worried and about to send my phone back. Everything seems to be working okay now. No issues.
Sent from my SGH-T999 using Tapatalk 2

this has driven me mad for the past few days. recently I upgraded to a S3 and my dad got a S 4G (which was released 2 years ago). while we were in Costco, my S3 randomly switched to Edge while the S 4G has 4G all the time. ALso we were on vacation to San Francisco so I could experience "Tmo largest 4G network." While we were in a hotel in Fremont, my S3 again switched to Edge and back to 4G randomly while the S 4G had 4G. also the signal is not stable at all. sometimes(1 or 2 times) it even dropped to zero bar. SOMETHING wrong with samsung phones. I read somewhere someone had this issue with the S2 also. I can live with the HSPA+ for 2 years, but hey dont give me random Edge like that
I plan to go exchange for a new phone at Costco... probably a new S3 to see if the issue still exists...

K12123 said:
My gsiii for some odd reason loses 4G and sometimes even service. Last night when i was on a call, it dropped and the signal reflected that i was running on edge then it switched to someting that said "G." I looked at my brother's siii and he was also on edge. So i tried putting it on airplane mode however it would not go through. It's as if i never pressed anything. So i had to restart the phone and it was on airplane mode, so i took it off then about a minute and a half later i got 4G back. Today when i was browsing the web, i randomly lost 4G again but this time i continued to have signal just no data. About a minute later I got it back. About a minute later i lost it again and regained it about a minute later. I havent noticed anything else about the phone and ive had it for about a week and last night was the first time that i restarted it. Any ideas? Has anyone else experienced this? Thanks!
Click to expand...
Click to collapse
T-Mobile's 4G network works in a interesting way (do all HSPA+ networks work this way?). They idle in UMTS mode (3G) until there is network activity, and then switch to HSPA+ (4G) mode. The network changing is an automatic thing does to save battery life ("Cellular standby" is often the largest battery drains).
Ever use an AOSP-based ROM (i.e. Cyanogenmod)? You'll sometimes see the network indicator in the status bar switch between 3G to H+ to 4G, etc as you use it. Stock T-Mobile ROMs are hard-coded to always say "4G", but if you go to Settings → About phone → Status, you can watch the network type there change as well as the phone does anything over the cellular network.
You should never be dropping to GPRS or EDGE. Perhaps the mechanism described is defective on your phone?

Happened again today. Had signal but no 4G, not even Edge, just bars. i think it happens whenever the signals low. Thoughts?

I'm having the same issue at my work place. I'm getting Edge (50-80%) more often at my desk, when previously with my SGS2 it stayed at 4G all the time. Checking Cellstandby I am getting 31% time without signal.
Is there a setting to force 4g connection?
My office is in Cupertino, CA and reception is not bad in general, but there are a few locations with 4G dead spots.
I'll check my reception again at home (Santa Clara, CA). I can do a side by side comparison with my SGS2 (now belongs to my wife).
On call with TMO right now, they are going to do a reset of the phone in their system, then I will need to do a reboot. Fingers X'd that things will improve.
BTW, what options do I have to get a replacement phone if I bought mine from Walmart? Do I need to send it in or can I do an instore exchange? Just got it on Sunday. Will I incur any fees if I returned the phone?
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Reset didn't work. Passed on to level 2, there submitting a service request to check reception in the area. Need to follow-up on Friday if the reception is still bad. Since I'm in Cali I do have 30 days to return the phone.

I have similar reception issue but I dont lose signal completely. I will go from 4g(hspa+) to 3g to edge then it will switch back to 4g after 30secs-60secs. Quite annoying since I will be stationary and it will happen and it happens more when Im in a car. Never had this problem when I had the Nexus One.

sfsilicon said:
I'm having the same issue at my work place. I'm getting Edge (50-80%) more often at my desk, when previously with my SGS2 it stayed at 4G all the time. Checking Cellstandby I am getting 31% time without signal.
Is there a setting to force 4g connection?
My office is in Cupertino, CA and reception is not bad in general, but there are a few locations with 4G dead spots.
I'll check my reception again at home (Santa Clara, CA). I can do a side by side comparison with my SGS2 (now belongs to my wife).
On call with TMO right now, they are going to do a reset of the phone in their system, then I will need to do a reboot. Fingers X'd that things will improve.
BTW, what options do I have to get a replacement phone if I bought mine from Walmart? Do I need to send it in or can I do an instore exchange? Just got it on Sunday. Will I incur any fees if I returned the phone?
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Question. With your s2 what happens if you're in an area without 4g? Do you get edge?
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I am having the same issue. I had perfect 4g coverage all over my town, (I live in south texas). The problems started 2 days ago, when I lost all 4g coverage. I took out my sim card and placed it back in and the 4g logo came back on. But now I have been noticing that my cell signal will completely drop and then slowly come back up. This has happened several times. I also went to tmobile and changed my micro sim card and the issue remains. AND NOW I AM ON EDGE!!!!!

Has anyone been able to get a replacement and did it fix the problem?
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