Develop Bugs

[LTE] Grey data connectivity

Is it me or do I seem to always have an issue with data and my phone. There are many times when I go to pick it up to use and the data, either 3G or 4G, is greyed out.
I've noticed it even if I switch my phone to CDMA only.
Any suggestions on how to fix it other than the obvious reboot or airplane mode?

Unfortunately, this might just be reception issues in your area. I have no LTE problems where I live.

That's what I'm thinking. The phone may just not know what mode to chose cause I'm in between the two.

I have to bump this thread. I'm sick of this. I can hardly ever send MMS messages when I'm on WiFi.
I'm not in a 4G area, that I know. I was successful in updating my PRL which I thought fixed my issue, but didn't.
It's not like I have no signal, 1 bar, -90dBm in my house. Even switching the phone to 3G only doesn't fix this. Rebooting is my only option, as turning on airplane mode doesn't help.
Does anyone else have issues connecting to data? I'm tempted to root, just to flash a new(er) radio, but I don't feel like restoring my phone.

Have you tried updating to the new radio?
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[DELETED] Accidentally posted in the wrong thread.

No. That isn't the solution. Thus is s documented and serious problem. Its on google code and tickets have been opened with Verizon
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dudeimgeorge said:
No. That isn't the solution. Thus is s documented and serious problem. Its on google code and tickets have been opened with Verizon
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Whoops! That's what I get for opening up threads in multiple tabs. I replied to the wrong thread.

Haven't tried a new radio, still would have to root it.
As for the wifi sleep policy, it's set to always. I dunno...

shoman24v said:
Haven't tried a new radio, still would have to root it.
As for the wifi sleep policy, it's set to always. I dunno...
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As for the wifi sleep policy, it's set to always. I dunno...
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Yeah, that was my bad. I had multiple tabs open with different threads and posted in the wrong one.

I live in a spotty 4g area so its constantly switching from 3g to 4g and before it locks onto one signal it always does the stupid grey bar deal and sometimes it won't lock on at all even though I'm in a strong (3g) area. Restarting the phone works sometimes. All I know is that it better be fixed soon or this phone will be going back.
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the_gonz79 said:
I live in a spotty 4g area so its constantly switching from 3g to 4g and before it locks onto one signal it always does the stupid grey bar deal and sometimes it won't lock on at all even though I'm in a strong (3g) area. Restarting the phone works sometimes. All I know is that it better be fixed soon or this phone will be going back.
Sent from my Galaxy Nexus using XDA App
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Yup, this is the issue I have. I can have strong 3G signal (all bars grey) but it just won't connect. Airplane mode sometimes fixes it, but I usually have to reboot the damn thing.

shoman24v said:
I have to bump this thread. I'm sick of this. I can hardly ever send MMS messages when I'm on WiFi.
.
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Turn wifi off for it to send/receive mms messages better
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wayneb02 said:
Turn wifi off for it to send/receive mms messages better
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Except the issue is... the data won't connect after I disable wifi lol. Hence why it won't even send with wifi on...

Do you live in a4g area?
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wayneb02 said:
Do you live in a4g area?
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We have 4G here in town, but I live on the outer city limits. When I get closer to town I get 4G.

I know where I live sometimes I need to reboot my phone for it to change successfully from 3g to 4g... Another thing people suggest is toggling airplane mode on and off to make it pick up signal
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wayneb02 said:
I know where I live sometimes I need to reboot my phone for it to change successfully from 3g to 4g... Another thing people suggest is toggling airplane mode on and off to make it pick up signal
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Yeah, I don't know why airplane doesn't work like rebooting usually does.

You might possibly have an actual defective phone
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wayneb02 said:
You might possibly have an actual defective phone
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I thought about taking it in and replacing it.... I don't have any reception issues, just this issue with the phone not wanting to get on data about 50% of the time.

Samsung galaxy s3 4g lte toggle widget ???

I tried searching but could not find anything similar. is theree anyone that knows of an app or widget so i can toggle the lte / evdo ect on my phone . im looking for something similar to what the original evo 4g had aas a basic on off widget for 4g.
update: beautiful widgets or hd widgets have wifi and 4g toggle but it only works with wimax.
posted this in the "international galaxy s3 forum" by mistake but i guess their lte and our is soo different they have no need for this

Idt there is anything atm
Samsung doesnt have those toglles in widgets?
Sent from my SPH-D710 using XDA

the system ask for a reboot when you change, so i doubt a widget would be very useful. i don't think you can switch between them ondemand like that..

There isn't a way to manually switch between 3g & 4G LTE, its an automatic switch based on the area you're in. The new 3g signal piggybacks through the LTE hard ware, where the EVO had separate radios that allowed the switching.
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---------- Post added at 08:07 AM ---------- Previous post was at 07:47 AM ----------
I stand corrected, there is a way but has down sides to it as well.
http://forums.androidcentral.com/sprint-galaxy-s-iii/202207-possible-keep-4g-lte-only.html
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Are there battery savings to be had by leaving LTE off?

Rob the plumber said:
Are there battery savings to be had by leaving LTE off?
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Great battery savings by leaving it off, unless needed. I'm in Dallas Meteoplex and avg 2 - 3 mbps on 3g so I leave it off. On stock from I would get about 20hrs on a single charge.
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sykotc said:
Great battery savings by leaving it off, unless needed. I'm in Dallas Meteoplex and avg 2 - 3 mbps on 3g so I leave it off. On stock from I would get about 20hrs on a single charge.
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here in nyc i average 200-400 kbps on 3g. dying for 4g...

cannot connect to cell network

I was in a building and had full bars but could not make a call, it kept saying "not registered on network". so i selected an ATT network and when i try to switch back it says "error searching for networks". also when i hit "select automatically" it sits on the "automatic registration" screen until the end of time. anyone have any ideas? I cant make calls, or get data. I can use WIFI fine, and even WIFI calling.
Stock ICS rom with faux Kernel. I had some system apps frozen with TB but i defrosted them all and restarted, problem remains.

Disabled WIFI calling, ReEnabled WIFI calling, then disabled it again and when I disabled it the last time I had full bars, then I just selected network automatically, worked real quick and I had 4G back too...not sure what caused it but its good now.

It's normal. Sgs3 can't roam on other towers. If you have T-Mobile it will only connect to T-Mobile towers. Have the same issue with a few different sgs3 phones. Latest being unlocked an using an at&t SIM and it does the same thing, will only connect to at&t towers. No roaming on other towers.
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I think it won't roam if there's a tmobile tower detected. If there are no tmob towers it should let you roam.
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Would that would have caused no bars and no cell data in my house later that day too? My house always has full bards and ive been getting 18Mb down on 4g there too, yet i had nothing.
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mustk1ll20 said:
It's normal. Sgs3 can't roam on other towers. If you have T-Mobile it will only connect to T-Mobile towers. Have the same issue with a few different sgs3 phones. Latest being unlocked an using an at&t SIM and it does the same thing, will only connect to at&t towers. No roaming on other towers.
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Roaming is not device dependent. It's cell tower dependent. Each area is zoned. If T-Mobile has an agreement in said area with att, then you can roam. If the tower you are near is an att tower and there are no roaming agreements, then you won't be allowed to roam. And as the doc says, you most certainly will not be allowed to roam if there is T-Mobile service. But I hope and feel optimistic about the metro PCs merger. I feel that will greatly allow us to have a deeper area of coverage as well as more areas having service.
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---------- Post added at 02:35 PM ---------- Previous post was at 02:33 PM ----------
freakasis said:
Would that would have caused no bars and no cell data in my house later that day too? My house always has full bards and ive been getting 18Mb down on 4g there too, yet i had nothing.
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Are you reporting zero coverage in your home when you used to get full 4g? Have you tried moving to another location and seeing if it worked?
Or are you saying you have service but it's just not making phone calls and connecting to data?
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Until I turned wifi calling off, on, and and off again..... I had 0 service. I started at the hospital, and and remained when I went home, about 2 hours.... Reboots did not affect it..... I originally turned on wifi calling when I went nto the hospital because there was no service, but they have wifi..... But even when I left the hospital, I still didn't have service for hours, until I switched wifi calling off, and on, and and off again.... Then all of the sudden full signal and 4G came back. I need to mention that outside of the hospital in have had nearly full signal strength everywhere in my county including my home before and after this incident.
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Sounds to me like either the wifi calling feature got hung somehow leaving you stuck sorta in between it shutting off and the cellular side turning bback on (if that even makes sense!), or there were some issues with the tower in the area, and once maintenance was complete, you got your signal back.
Just guessing here!
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Aight well thanks for the input.
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how turn of 4g

how do you guys turn off 4g

Both the battery working so good and long I would ask you this:
Why?
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just wanna test 3g of tmobile
i do have unlimited 4g

mrej201 said:
just wanna test 3g of tmobile
i do have unlimited 4g
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4G and 3G are not actually different for Tmobile.
Wikipedia article on Evolved HSPA
So then, the question is how to turn off DC hspa. Which is probably not accessible through the maintenance menus.
But for many real world value metrics I don't know what you would gain.

Get the app called phone info
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I think there's an app for that. I forgot what its called but I think the toggles are Edge or HSPA+ umts only
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Phone info
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I'm wondering if the OP came from Sprint? Sprint's 4G was a separate (battery sucking) radio that you could turn on and off and needed to in order to protect the battery usage.

4g on TMo isn't like LTE, it's not a separate modem to turn off like AT&T, VZW, or sprint. It's really a hopped up version of 3G. Your choices are 3G/4G or Edge.

mrchris1234 said:
I'm wondering if the OP came from Sprint? Sprint's 4G was a separate (battery sucking) radio that you could turn on and off and needed to in order to protect the battery usage.
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yea i did came from sprint that y i ask but thanx for the app guys

I occasionally see a G. Not sure what that is...
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DarthPiggie said:
I occasionally see a G. Not sure what that is...
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That is the 2G service.
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mrej201 said:
yea i did came from sprint that y i ask but thanx for the app guys
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On T-Mobile, there is no real differentiation between 3G and 4G. Both operate on the same spectrum. The only difference is the speeds. However, that is controlled, not by your phone, but by the tower you're connected to. It's easier to look at it as the same exact technology. For the purpose of this conversation, there is no more T-Mobile 3G. It's all 4G, or HSPA+, service now. The 3G brand has been retired in favor of the 4G moniker.
To put it all simply, 3G is the same as 4G on T-Mobile. To turn off 4G, you would drop down to 2G, or EDGE/GPRS, service.

cajunflavoredbob said:
On T-Mobile, there is no real differentiation between 3G and 4G. Both operate on the same spectrum. The only difference is the speeds. However, that is controlled, not by your phone, but by the tower you're connected to. It's easier to look at it as the same exact technology. For the purpose of this conversation, there is no more T-Mobile 3G. It's all 4G, or HSPA+, service now. The 3G brand has been retired in favor of the 4G moniker.
To put it all simply, 3G is the same as 4G on T-Mobile. To turn off 4G, you would drop down to 2G, or EDGE/GPRS, service.
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And if you still want to do it.....go to settings - more settings - mobile networks - network mode and you can select "GSM only".
Strangely enough....there are a couple areas around where i live that my phone will show a 4G connection and absolutely refuses to open anything. I've found that if i switch to the "GSM only" option in those areas that at least i can get it working... slowly, but better than nothing.
Had the same issue with my previous phone. (G2) weird phantom 4G zone. :-/
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Question. How to activate lte only?

With CM10.1?
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there is no such thing as LTE only, and i doubt it will exist until LTE coverage is more widespread. LTE also runs off CDMA, i don't know the technical information but i don't think it would save any power, compared to using CDMA only. if you want to run LTE just select CDMA / LTE and it will stay on LTE whenever LTE is avail.
if i was to turn my phone on LTE only and do my usual day of driving i would have no signal for 70% of the day, and that is driving around the GTA, which is canada's heaviest population density. so even if u happen to be somewhere where u usually have LTE, this is extremely rare that's why the mode isn't out yet.
cdma / lte priority goes as follow
4g lte - highest priority
4g - 2nd priority
3g - lowest priority
if you are looking to save battery and not performance, use 2g only for extreme battery saving, or CMDA only for moderate battery saving while still having good performance.

.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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Thanks for your informative explanation.
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Swetnes said:
.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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good point