[Q] 3G --> 4G only when idle. Normal or bug? - Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help &

Using a Telstra I9305T, I'm interested to know why this happens, and if it can be fixed.
The scenerio is: Streaming radio in a "H+" area. When entering a 4G zone, the zone will not automatically switch to "4G" unless the streaming is stopped, and the connection idle for about 10 seconds. It then drops from "H+" to "3G", and then from "3G" to "4G".
So basically, the phone will switch from "4G" down to "H+/3G" when leaving a 4G zone, which is expected, but the reverse will not occur unless the connection is idle.
Anyone else seen this problem?
Possible reasons...
- modem.bin needs improving?
- network bug?
- I9305T bug?
- ROM bug?
- standard behaviour?

This also happens on Samsung Galaxy Note 2 LTE and Samsung Galaxy S3 LTE in Hong Kong, but it do not take so much time for it. However, it still needs 30 seconds to auto switch to LTE.
However, LTE phones are already on LTE network when booting in Korea
In July, I got SHV-E210S which is a Korean model of Samsung Galaxy S3 which supports LTE. However, it do not auto switch to LTE network unless IMS is available. I use Hong Kong SmarTone SIM and got the problem that I have to lock the phone to LTE and it is unable to receive calls.

hmm interesting. That first video demonstrates the same as what I've said...only entering 4G once the connection is idle. I guess the question is why it happens..

Related

[Q] My Incredible S won't connect on internet using EDGE???

Hi
I have a strange problem with my Incredible S, seems impossible to browse or make any data connection using EDGE. One of the arrows near E symbol (upload) activated regularly when needed by data connection but the other one (download) is always gray inactive. The browser remains stalled for some time but at the end the standard "no internet connection" page appear. In some cases the connection, after the stall period, switch automatically to GPRS which function normally. The phone operates perfectly on 3G as on GPRS but never on EDGE. I tried from hard reset to the latest firmware update but the situation remains the same. After my last update using "RUU_Vivo_Gingerbread_S_HTC_WWE_2.30.405.1_Radio_20.2808.30.085AU_3805.06.03.03_M_release_199308_sign ed" I actually have radio 20.2808.30.085AU_3805.06.03.03_M.
I'm unable to change my situation and haven't found anyone else with the same problem (someone is having problems with EDGE but only on roaming, but I have problems on my home network??).
1) which country and carrier you are using your Incredible s?
2) which model you have? s710e or S710a?
njfpolyr6 said:
1) which country and carrier you are using your Incredible s?
2) which model you have? s710e or S710a?
Click to expand...
Click to collapse
s710e.
Country: Albania
Carrier: Vodafone - 3G ok, GRPS ok, EDGE no.
Carrier: Albanian Mobile Comunications - GPRS ok, EDGE no.
Carrier: Eagle Mobile - GPRS ok, EDGE no.
I tried all these operator using approprite SIM cards.
Also tried a SIM card of Vodafone UK, but the result is the same.
I actually didn't think it was possible to use internet when you signal is EDGE.
Data up arrow and no down arrow, along with stalled internet happens at least 50% of the time on gprs and edge for me whenever the signal is less than 4 bars, but no problem on 3g or WiFi. I have heard other people report the same issue. I have been through all radios, but none of them fix this issue. I'm with UK Vodafone.
gudge said:
Data up arrow and no down arrow, along with stalled internet happens at least 50% of the time on gprs and edge for me whenever the signal is less than 4 bars, but no problem on 3g or WiFi. I have heard other people report the same issue. I have been through all radios, but none of them fix this issue. I'm with UK Vodafone.
Click to expand...
Click to collapse
yes, I have been in such situations before, but at the end the connection was made. with incredible s there is no edge connection. I have tested with my other phone (HTC sensation) on the same table, on the same time, activating only gprs/edge without success on Inc s, but normally on sensation.
no way ...!!!

[Q] How to lock network mode to HSPA+ insdead of 3G?

As title, how do i do it in galaxy note?
hspa+ is 3G
HSPA bearers are assigned on demand. WHEN your data connection is idle it will show 3G, if in 3G service area. This is normal
Sent from my GT-N7000 using xda premium
Maybe the icon is misleading.
Because when the connection is idel, the icon shows 3G. When is busy, H+.
I just want my phone to stay on H+, because it takes 3-5 seconds to connect.
HTC phones have this stay alive option as i know.
I have this issue. The data on all my modern devices always worked MUCH better when it showed H as opposed to 3G. Why is this?
I can do this on my wife's Android phone, so I know it is an option. Hopefully the feature hasn't been removed on the Note - I will soon be moving from my trusty HTC Advantage (the first phone with a 5 inch screen) and always lock my phones to H+.
As far as I'm aware, H is faster than 3g. So that's why your internet will work faster when H is shown. Also the H signal is not available in all areas....at least it's not in the UK. If H is not available the 3g symbol will show. If 3g isn't available then G will show up, which is even slower. I've noticed H is only fully available in Towns or cities or surrounding nearby country side.
So you can't set it to always connect to H because it's not always available.
Sent from my GT-N7000 using XDA App
New York City has pretty good coverage if you're on AT&T and you haven't been flagged in some way by them. According to their coverage map on their website it's solid "faux" G all around my home.
According to http://forum.xda-developers.com/showthread.php?t=1380284 there is a menu which is accessed by entering in *#9900# on the keypads. This menu gives you the option to disable fast dormancy, which according to http://forum.xda-developers.com/showthread.php?t=1111581 will change the timeout from H+ to 3G from 7 seconds to 30 seconds. Admittedly it's not the permanent lock to H+ that was originally requested, but from what I read it sounds like it is done as a battery saving preventative measure.

[SOLVED] ATT SGH-I957 HSPA connection only

Hi,
I don't know if this question been asked before. Before returning the tablet for a replacement, I was just wonder if anyone have the same issue.
"My tab can only connected to HSPA mode and can't connect to LTE". Is this normal?
I have a tab 8.9 SGH-i957 and a Galaxy Note. With my Galaxy Note I would able to connect to 4G LTE (32 Mb download using speed test) but my Tab can only connect to HSPA (2-4 Mb download speed). I tested both the Galaxy Note and Tablet side by side in my house.
Does anyone have the same problem or do I have a defective tab?
Call tech support and they told me that SGH-i957 can only do HSPA. I argued with him that ATT website spec said that it is LTE support. Finally he gave up and tell me to go to the store and prove that to them. If that is the case then I may have a defective tab.
Thanks!
I decided to do one thing before returning the tablet. I do a factory reset and reboot. Voila! There is my 4G LTE connection. I am curious as to why it was not connected to 4G LTE before and instead connected to HSPA only.
1. Connected to my Wifi , disconnect my Wifi and 4G LTE connection return.
2. Turn on the air plane mode then switch off the air plane mode. Guessed what my 4G turn back on but refuse to connected to LTE instead it stay connected to 4G HSPA. I rebooted 3 times and toggle on / off air plane mode and still it won't connect to 4G LTE.
3. Again, factory data reset. Then I can connect to 4G LTE again without issue.
Hence, I am not gonna touch that airplane mode again.

[Q] Data on Rogers network

Edit: not sure if this is a switching problem or the way the phone is designed, but sort of figured it out...seems that the Exhibit 4G will auto fallback to UMTS when no HSDPA link is active. Just ran some speed tests and it did in fact hold HSDPA speeds, when done it fell back to UMTS. My GS3 doesn't do this...if I have 4G/ LTE available, it stays with it. Hence the confusion.
I recently purchased a new unlocked Exhibit 4G, have been testing the various roms here...many thanks to the devs...great work! Currently trying AOIP...nice!
My primary usage is on the TMO network, at my RV site on weekends. Unfortunately, 2G is the best I can get in my location, regardless of carrier.
I live in Canada the rest of the time, on Rogers with a GS3.
I was testing out the Exhibit 4G with my Rogers sim, LTE APN's were set up ok, voice & messaging are fine, but data is wonky...I will get the 'H' (aka 4G) icon for a few seconds at a time, but for some reason I keep falling back to 3G speeds. This cycle continues over and over. AFAIK, this phone should support Rogers HPSA+ frequencies (aside from their new 2600), shouldn't it?
So I'm wondering if this is due to an incompatibility with the phone on Rogers, or needing a different baseband, or could the phone's h/w be screwy? This has been happening with all roms I have tried (AOIP, Baked, Slim).
Appreciate any insight.

[Q] Access to more Network Mode options? XT1053

I saw a few screenshots of people's Moto X's from sprint with a bunch of options under Network Mode. I have the XT1053 (TMO unlocked, on ATT network) and the only options I see are "Auto" and "2G."
I browsed around and found that there's an LTE OnOff app, but I'm just wondering if there's a way I can get those options for 3G on my device's Network Mode option list?
The reason why I even care is because for some reason at my workplace, I can't seem to get any data through LTE. My signal will display 3 bars of LTE, but it absolutely does not work. While it will turn off LTE and just say 4G since it's on auto, I find that a majority of my day, it WON'T switch. It stays on 4G LTE 99% of the time and does not function at all. When I walk outside the building, LTE works perfectly fine. Would I be right to assume that the auto mode is literally on borderline between switching, so it never establishes a stable connection?
I guess it brings me to the question, is the Auto mode inefficient / will I have to live with manually turning off LTE every time I get to work? :/
noc215 said:
I saw a few screenshots of people's Moto X's from sprint with a bunch of options under Network Mode. I have the XT1053 (TMO unlocked, on ATT network) and the only options I see are "Auto" and "2G."
I browsed around and found that there's an LTE OnOff app, but I'm just wondering if there's a way I can get those options for 3G on my device's Network Mode option list?
The reason why I even care is because for some reason at my workplace, I can't seem to get any data through LTE. My signal will display 3 bars of LTE, but it absolutely does not work. While it will turn off LTE and just say 4G since it's on auto, I find that a majority of my day, it WON'T switch. It stays on 4G LTE 99% of the time and does not function at all. When I walk outside the building, LTE works perfectly fine. Would I be right to assume that the auto mode is literally on borderline between switching, so it never establishes a stable connection?
I guess it brings me to the question, is the Auto mode inefficient / will I have to live with manually turning off LTE every time I get to work? :/
Click to expand...
Click to collapse
3 bars of LTE is an excellent signal. With 1 bar of signal I can still get 15mbps down from my provider. If your phone is detecting such a strong received signal it won't be switching back to HSPA on its own. For some reason the building you're in may block the phones transmitted signal more then it blocks the signal from the cell site. I am guessing you're on band 4 LTE which has quite the frequency difference between uplink and downlink. Your only option(assuming the phone or cell site isn't defective) is to manually switch to WCDMA with a third party app such as the "LTE setting" app in the Play store. Or unlock your bootloader and flash firmware from another provider that has more options. I know the Rogers Canada firmware has an LTE on/off option, it also has a 2G only option. Sadly Rogers has not yet approved the release of 4.4 (kitkat).
Steve-x said:
3 bars of LTE is an excellent signal. With 1 bar of signal I can still get 15mbps down from my provider. If your phone is detecting such a strong received signal it won't be switching back to HSPA on its own. For some reason the building you're in may block the phones transmitted signal more then it blocks the signal from the cell site. I am guessing you're on band 4 LTE which has quite the frequency difference between uplink and downlink. Your only option(assuming the phone or cell site isn't defective) is to manually switch to WCDMA with a third party app such as the "LTE setting" app in the Play store. Or unlock your bootloader and flash firmware from another provider that has more options. I know the Rogers Canada firmware has an LTE on/off option, it also has a 2G only option. Sadly Rogers has not yet approved the release of 4.4 (kitkat).
Click to expand...
Click to collapse
That makes a lot more sense to me now. So basically the "Auto" mode only considers my reception and not transmittance strength, so it never saw a need to switch me off LTE. I am almost sure it is not my phone because I started experiencing a signal loss issue with my S3 a few days ago. I doubt it's the cell site because as soon as I step out of the building, LTE works with no problems.
I did ended up using LTE OnOff to force CDMA and I can actually do stuff now. I went and did a speedtest ...
Ping: 114 ms
Down: 4.06 Mbps
Up: 0.77 Mbps
I guess with the lack of options, I have yet another reason to roll up the sleeves and get my hands dirty. Haven't touched ABD since I had a samsung captivate!
Thank you

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