[Q] Wifi network to cell network fast/seamless handover? - Samsung Galaxy S (4G Model)

So I'm wondering if there's a way to speed up the handover between wifi network & cell network when walking between connections (mostly during phone calls). Searched a bunch of threads about this and it seems to be a common question, but nobody seems to have a definitive answer. Is there a way to tweak either phone settings or ROM settings (Octane v3.0) to make the handover seamless? I just hate dropping calls when moving from a wifi network to an area without and the phone switches automatically to a cell tower. Thanks in advance for you responses/help in this.

KK
xolanir said:
So I'm wondering if there's a way to speed up the handover between wifi network & cell network when walking between connections (mostly during phone calls). Searched a bunch of threads about this and it seems to be a common question, but nobody seems to have a definitive answer. Is there a way to tweak either phone settings or ROM settings (Octane v3.0) to make the handover seamless? I just hate dropping calls when moving from a wifi network to an area without and the phone switches automatically to a cell tower. Thanks in advance for you responses/help in this.
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Tmobile had to implement the ims system and issue new sims for galaxy s2 users for this to happen...
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tehgyb said:
KK
Tmobile had to implement the ims system and issue new sims for galaxy s2 users for this to happen...
Sent from my SGH-T959V using XDA App
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K cool thx. That's bummer though. I guess we'll have to wait and see.
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Related

[Q] wifi calling app/ sip settings for wifi calling on tmob.

I have been trying to find any kind of app in the market and from the forums for this and so far i have found nothing. What i am trying to find is something will let me use wifi calling with t-mobile or if there any sip settings that are out there that i could use for making calls due to very poor signal issues in my house. issues is that i am trying to stick with t-mobile
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verizon 4g radio

hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
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plasmasnakeusa said:
hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
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not that it helps much, but this is an issue seeming to affect alot of us. I havent been able to correct it yet however. If I find anything out I'll post it.
Just put on airplane mode and turn it back off. Boom your done.
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Is that an app you use to change those settings or is that buried somewhere?
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I just checked as I haven't seen it yet either. Settings, More settings, mobile network, access point names
Kind of cool. Mine showed the first option chosen but it hope between 3G and 4G as usual. Choosing LTE made no difference for me. I have virtually no 4g signal where I love
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xceebeex said:
Is that an app you use to change those settings or is that buried somewhere?
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Airplane mode is a feature of the phone and turns off all radios. You can hold the power button and choose airplane mode or use the quick toggle in the notification window. Since it sounds like you may be in an area with weak 4G, you can also use an app called Phone Info to set it to CDMA auto (PRL) under Device Information. You can also change it back to LTE/CDMA/EvDO if you want it to switch as normal.
With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.
frankybeenz said:
With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.
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Doesn't work on LTE devices. A reboot essentially does the same thing. Some have recommended pulling the battery with the phone on, removing the sim card for about 30sec and then putting everything back in.
Thanks, I know what airplane mode is, wasn't sure where the APN setting was. I will look in to phone info though.
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Are you guys also experiencing the "No Sim Card" and "No Network Connection" issues?
Or is this an entirely different issue?
When this phone goes to 3g, it does seem extra bad on how long it takes to switch back to 4g. i have areas where i live where it goes to 3g when going in between hill (less than a 50 foot stretch) and it will not go back to 4g for over 10 minutes if i dont manually do it. Not to mention my LTE never goes above 10 mbps on the best days
Somewhat related...If you use Anycut to create a shortcut to IOTHiddenMenu, enter the ##DATA# Menu, edit. Under "Advanced", there is an LTE toggle, under "Other" > "HDR/1X" you can set the phone mode, and then under "Other" > "LTE APN Settings" you can somewhat modify the APN settings, reset and discard. If it asks for a password, it's 000000.
I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
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Josolanes said:
I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
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probably easier said than done. The phone info app can force LTE but you lose voice and text.
Ya I found that out yesterday when testing speeds. I went to send a text then make a call and no luck
Otherwise 4G service where I live could be excellent at one spot then a mile away no service. If I had excellent 4G consistently I'd consider GoSMS which I believe has the option for data text and also a separate VoIP app
Ah well hopefully something will be figured out eventually. With a strong 4G signal 4G is considerably faster and more consistent than my 20mbps home broadband
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send it back
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
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Your new phone came with an already updated firmware version I535VRALG1 instead of the original version I535VRALF2.
lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
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I'm having the same issue with my second replacement phone... My first one was replaced for an entirely different issue (loose home button).
Did you get the "No Sim Card" notification and "No Network Connection" message?
I think I might have to return this one as well...
PJnc284 said:
probably easier said than done. The phone info app can force LTE but you lose voice and text.
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Not sure if anyone will have the same luck I have with the "Phone Info" app, but with it I was able to get my 4g service back and my phone is functioning normally again. Just open the app, select Device Information and scroll down to "Set preferred network type" and select "LTE/CDMA/EvDo" then get out of the app.. 4g should return shortly there after. When I looked at it, my device was set to "GSM/CDMA auto (PRL)"

Cannot toggle to 2g

I've tried several roms including cm 9, cm10, slim bean and paranoid android and none of them will allow me to toggle down to 2g. I keep 2g on while at work because h or h+ is not strong enough to make or receive calls. I cant even use *#*#4636#*#* to switch to GSM only. Any help would be greatly appreciated
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You need a rat unlocked radio only one I know of is rogers may be able to
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Ah okay, I'll give that a try a shot. Thanks for the reply!
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Even a RAT unlocked radio didn't work for me. I think you need to unlock the phone as well, or at least that's what I've read in other threads about this topic.
I have the same issue here. Your phone doesnt just default to edge when you make a call? Mine switches seamlessly between the two without dropping calls
danaholic86 said:
I have the same issue here. Your phone doesnt just default to edge when you make a call? Mine switches seamlessly between the two without dropping calls
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On my phone it's marked as 3G. However having an Edge toggle can help. I remember at one of my old jobs I had to stream audio through my phone and when it used 3G it would often have connection problems because of our location. However when I forced my phone to edge (this was on my Nexus One) the connection was SOLID; never a break in the audio.
A lot of the time signal inside is to low to even call out on h or h+ ( my phone rarely drops down to 3g at work) and it drops the call immediately, before even ringing. Maybe the skyrocket handles calling out differently, I've only ever used HTC devices. I did flash a rat unlocked radio last night and it seems to make signal a lot stronger so I'll play around with that today.
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Goofy Network Mode Switching - CM10.2

Hey guys,
For the past month, I have been fighting reception issues at my house, which isn't in the best of locations for cell service. With 3G/LTE enabled, I would get 2-3 bars and then the signal would disappear and stay that way. I used to be able to move the phone an inch in one direction and the signal would change. Then, the phone started developing an issue where it would drop the signal and not even try and pick it back up again until I cycled the airplane mode. It got so bad that I would cycle it and 10+ messages and voicemails would come flooding in and then the connection would drop again.
Well, I've played with multiple roms and am now on CM10.2 for a overall stable platform. I've tried just about every APN setting there is out there, and just last night I stumbled on a little trick. Normally when changing network modes, the change doesn't stick, and I have heard of this being common. Well, somewhere on the net, a guy mentioned to go under "Settings > Wireless & Networks (more...) > Mobile Networks > Network Operators and select AT&T when it shows up, then try and change Network Mode. Well, that worked great and now I have a very reliable EDGE connection through-out my house (4-5 bars). Even the connect to 2G only toggle works as well. At this point, I definitely prefer leaving it like this, since I get a very reliable connection and it looks like possible better battery life as well.
My question is, why does it do this? Is there a bug in the switching part of the network mode selection? I'm definitely ignorant to how that side works and any information for the subject would be fantastic at this point. It would be nice to have EDGE be a priority at my house, but out and about where 3G/LTE is available for the phone to properly pick it up. Are there external apps that help control such switching? Thanks!
What radio are you currently using?
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holeindalip said:
What radio are you currently using?
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Currently using UCMC1.

Signal drops when data is enabled

In my Nexus 5 whenever I enable data signal drops time to time.I changed the sim card too but it didnt solve it either.Looks like it happens only in 3g network because I didnt notice it in 4G LTE.
No matter which ROM i have in my phone, this happened in KitKat (full stock), PA, Lollipop (full stock).
I put my sim into a Galaxy S3 and it worked fine. So I think this is a issue in my phone, not on the sim.
Anybody else having this issue?
Any solutions?
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It finds the best network. If you enable it for voice only, I would imagine it would only look for best voice connection which could be 2G, but then when you enable data - it needs 3g. Just making a guess here
rootSU said:
It finds the best network. If you enable it for voice only, I would imagine it would only look for best voice connection which could be 2G, but then when you enable data - it needs 3g. Just making a guess here
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Thanks for the idea. I changed the settings to 3G in Preferred network type and looks like it has solved the problem! No signal drops for few minutes.Will test more and report back!
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