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Any Way To Force Hsdpa Alone???

As the subject states, is there a way to force HSDPA alone on 3G enabled pocket pcs (using Polaris) without it going back to 3G.. a kind of way to keep data request on so that hspda wont go back to standby.
Thanks

I have same problem.
I live in HSPDA supported area, Kaiser gets full H bars etc, but my Kaiser keeps switching between GPRS, 3G and EDGE for some weird reason

Hi Guys,
You can't force your handset to only use HSDPA services. HSDPA will not be enabled until you start a large download or stream services that require higher bandwidth. The BTS (base station covering you) is informed by the controling switch when to give you an HSDPA bearer, this is triggered by your data throughput. If you are not downloading a large file etc then you will not be given an HSDPA channel. This decision is always taken by the RNC (controling switch) and cannot be forced
There are a few reasons why you might switch between 3G/HSDPA/EDGE etc. These are primarily based on RF conditions - if your received signal strength falls below a certain level (decided by the network planners) you will be forced to handover to 2G (generaly a stronger signal if you live on the edge of 3G coverage) Some networks also have load based handover enabled - therefore if you serving BTS is getting highly loaded it will then hand you over to 2G/EDGE and you cannot force this either. You can of cource force you phone to only lock onto the 3G network and ignore 2G, then you will always at least get a 3G bearer but this will not guarantee HSDPA service - this will only be given if you have good enough signal and if you are using enough throughput. Forcing to 3G will of course increase the amount of call drops you have as you will not be able to hop onto another carrier
Sorry guys!!

^^^That's funny, when I was in an HSPA zone with my Fuze the H stayed on all the time... For that reason, I think you must be incorrect. Sitting there doing nothing, transferring data, didn't matter, always showed H when it was available. This happened in Boston, Albany, and NYC... So it's surely not a fluke based on the area. My data usage at the end of the month wasn't ridiculous either, so it wasn't constantly sucking data for any reason.

bumps.. i would like help on this too coz i use my phone for tethering and it always lags coz when the connection stays idle it switches to 3G instead of remaining on HSPDA..

Im not sure if this wud do but u cud try .. open up dialer n dial *#*#4636*#*# -> Phone information scroll down and there's selection of network type .. try WCDMA only?

terry3386 said:
Im not sure if this wud do but u cud try .. open up dialer n dial *#*#4636*#*# -> Phone information scroll down and there's selection of network type .. try WCDMA only?
Click to expand...
Click to collapse
it is on that by default

Is possible to change modem software?

matcol said:
Hi Guys,
You can't force your handset to only use HSDPA services. HSDPA will not be enabled until you start a large download or stream services that require higher bandwidth. The BTS (base station covering you) is informed by the controling switch when to give you an HSDPA bearer, this is triggered by your data throughput. If you are not downloading a large file etc then you will not be given an HSDPA channel. This decision is always taken by the RNC (controling switch) and cannot be forced
There are a few reasons why you might switch between 3G/HSDPA/EDGE etc. These are primarily based on RF conditions - if your received signal strength falls below a certain level (decided by the network planners) you will be forced to handover to 2G (generaly a stronger signal if you live on the edge of 3G coverage) Some networks also have load based handover enabled - therefore if you serving BTS is getting highly loaded it will then hand you over to 2G/EDGE and you cannot force this either. You can of cource force you phone to only lock onto the 3G network and ignore 2G, then you will always at least get a 3G bearer but this will not guarantee HSDPA service - this will only be given if you have good enough signal and if you are using enough throughput. Forcing to 3G will of course increase the amount of call drops you have as you will not be able to hop onto another carrier
Sorry guys!!
Click to expand...
Click to collapse
am i correct to say that based on your explanation, switching from 3G to HSDPA is cell station controlled and not controllable via our handphone?

[App Idea] GSM/WCDMA Switcher

Hey guys,
As the radio stack is the second cause of battery draining after the display, I was thinking about a way to save battery life by reducing the impact of the 3G connection. Most of the energy saving apps on the market are only disconnecting the phone from the APN, but this isn't a great solution as each app could be set to update at different times and thus being unable to download data even if the user sets some exceptions. So I thought that an application which operates in the following way could be great to save power:
- The phone uses the 3G network while the screen is on;
- It switches to 2G when phone is in standby mode;
- It disconnects the APN data connection while the phone is using a WiFi Network;
Obviously to avoid possible issues during the switch between 2G and 3G the following rules are applied:
- If there's an incoming call or a phone call is being performed, there won't be any radio switch until the phone call is ended;
- If there's an incoming SMS/MMS, there won't be any radio switch until the text message is fully received.
Unfortunately as I'm not a Java developer I can't code anything like this. But let me know what you guys think about my idea and if it's technically feasible... Maybe some developer could be interested into further exploring my thoughts and will try to create such an app
Cheers

I'm not a developer but I think it sounds like a great idea. I go into settings and switch it to 2g when I'm in spotty areas outside of town. I have to work a bit to keep my N1 battery alive all day...

Hello I'm new here.
I don't know if your suggested profiles are the best case scenarios. You would need to calculate your data throughput, not just the radio power.
If you need to send 100 packets, your radio would be on the longest for edge > 3g > wifi. So, even though wifi uses the most power, it would be for a much shorter duration.
A profile for "place calls only" would work somewhat like airplane mode, but still keep track of towers. Your phone just wouldn't register on the network unless you wanted to place a call. You would miss your incoming calls, have no data connection, or sms. But, you could have it check at an interval for voicemail or sms. This would be most useful for "ringer off" situations like class or meeting.

Afaik Android is always connected to the APN even if the phone is not downloading anything, consuming a lot of battery power. On other platforms, i.e. Windows Mobile, the connection can be terminated by user and re-established when an app needs that.
The amount of data downloaded by widgets, Google mobile applications or apps which operates in background like eBuddy or Facebook should be quite low, so downloading the required data by using GSM or WCDMA while the phone is in standby would be pretty much the same. The only difference is that downloading stuff using GSM/EDGE should take much less energy power.
So that's why I thought about the app I described before: the phone can save a lot of energy power while in standby and be back to its full horsepower when there is any kind of user intervention. Pretty much the same thing that the system already does for CPU usage. It scales to the less consuming protocol (or, in the case of CPU, frequency and voltage) to save power

I know on the google api it isn't possible to do this, but I don't think that isn't the problem.
At the moment you have 3 options. GSM only, WCDMA only and GSM/WCDMA. Whenever you switch between the 3 of them, the phone will lose signal for 10 seconds before it can find the best network. So the switcher here is not the best as you will lose connection, and what if you are downloading something at the same time...
What you need is when the phone is on GSM/WCDMA that it knows the best network to pick from depending on the phones lifecycle. GSM/WCDMA loses battery power because it always tries to find the best network to connect to, so for example if you are on GSM it will constantly try to find a 3G network etc (as far as I understand it).
What we need is the ability for the phone to stay on GSM when the phone is idle and then when the phone is woken up to automatically start to search for a WCDMA network and then gracefully switch over like it does now. For this I have no idea if it is possible as I don't know how the scanning of the network works. If it is possible then that would be wicked. But this is what we need.

my preference would be if the phone would stay on 3g as long as any possible even if there would be a more reliable 2g connection and only switch to 2g if there really is no way to connect to 3g. turn of apn if the screen us turned of for longer then 1 or 2 minutes and only check every 15 minutes or so.
most of the time I'm on 3g only mode . since I live in a city I got good coverage almost all over the city. only problem is that when there is no 3g available also my phone is unreachable. I don't really miss data connectivity when there is no 3g since 2g is so slow that I rather have no internet at all but not being sale to be called or texted is a major disadvantage...
Sent from my Nexus One using XDA App

[Q] How do I prevent Samsung Galaxy S 4G from connecting to AT&T?

I have Samsung Galaxy S 4G with T-Mobile in San Francisco.
Whenever I go to an area without T-Mobile signal, the phone connects to AT&T. I called T-Mobile and they said that's because T-Mobile has roaming agreement with AT&T so my phone would connect.
The problem is, when my phone connects to AT&T, I can't make any calls. It says the phone's not registered. T-mobile says that's because I'm in an area that has T-Mobile coverage.
You'd think that the phone would be smart enough to figure out that only emergency calls can be made (which is what BlackBerry does and shows SOS sign). The real problem for me is that, I have WiFi calling enabled with cellular preference, and when I'm in the basement of my office building where there is no T-Mobile signal (but there is WiFi signal), my phone thinks it has cellular signal so it doesn't activate WiFi calling, yet no phone calls are coming in b/c it's not registered to AT&T's cellular network.
Is there a way for me to force my phone to only connect to T-Mobile? I know there isn't on the regular settings menu, but perhaps experts could tell me how to do so using those star-sharp keys listed here (http://forum.xda-developers.com/showthread.php?t=842134)?
Thank you!

Set wifi preferred instead of cellular.
Sent from my SGH-T959V using XDA App

Unfortunately, that doesn't work for me because I move around a lot, and Android WiFi calling feature doesn't have handover.
There's got to be a way to prevent this phone from connecting to AT&T at a low level somehow, no?

How do I do that? Have checked the manual but can't find location where explains how to select wi-fi preferred instead of cellular. Your kind advise will be appreciated

Open WiFi Calling and select settings. You'll see Preference. Select Cellular Preferred.

I think in setting then wireless and network, then mobile networks then network operators click the default settings.... select manual and wait for the carrier to pop up.
Will this solve your problem?
Sent from my SGH-T959V using XDA App

scoop_dtx said:
I think in setting then wireless and network, then mobile networks then network operators click the default settings.... select manual and wait for the carrier to pop up.
Will this solve your problem?
Sent from my SGH-T959V using XDA App
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yep manual is exactly what OP should do.

if the settings for network operators are set to manual then u select the network u want and it sticks unless u manually select a different network provider. u are in select automatically mode so the phone can switch all on its own. this should solve your problem as other people have already mentioned

I have tried this many times and works as long you don't turn the phone off. After I forced the phone to manually select T-Mobile I checked many times the default setting and it remained in manual until the phone was turned off. When I switched it back on it was again in automatic mode and switching to ATT when signal is low.
Is there a way to prevent this? If not, well , first thing when phone is on in the morning is to check default setting.
5/24 I finally gave up and sold the phone. Samsung says they have not received any claims regarding this issue eventhough you see it frequently in the forums. I returned back to my HTC HD2 and will wait for the G2.

[Q] National roaming and slow switching back to home network

I am with a carrier (U) that supports 3g in limited areas, outside the coverage, I will be switched to another carrier (C), but only with EDGE connectivity.
I am living in the 3g coverage area, but somehow the car park is not covered, so everytime I go to my office car park, it switches to C, and when I am back in the ground floor and up, I noticed that sometimes its very slow in switching back to the carrier U.
I have called U up and they asked me to use the "Select Network Automatically" settings, but that doesn't seems to help much as sometimes even after 30 minutes it didn't switch back, until I go into the network settings.

I have noticed this too.
I an on Sprint. If my phone switches to 1x cdma (slow), it may not switch back to 3G if I am actively using data. I have to uncheck and recheck "data enabled" to bump it back. It seems to switch back ok if data is idle.

hmm, wonder if I could do something with tasker about this.

[SOLVED] 3G consumes more battery than LTE, how this happens?

Hello XDA Community!
When my new phone (Huawei P9 Lite Mini) is on 3G/2G auto network mode, it consumes more battery than LTE/3G/2G auto mode even mobile data off.
I do not understand how this happens? For example, while 3G consumption at overnight is %10-15; LTE is only %2-3. This problem is the same in daytime too. Mobile data is off, unneccesary services/apps disabled, and no extra application installed while this happens. I tried all "wipe/factory reset/update firmware/factory reset/wipe/no app install" procedures, enabling all battery saving options, but it did not work. This is a problem for me when I'm in non-LTE areas.
This problem occurs the same result in different locations. There was no problem with my previous phone and I use same nano sim card.
I tried the following but it did not work:
- Wipe cache, factory reset, wipe cache,
- Wipe data/factory reset over recovery menu,
- Update latest firmware, wipe data etc. again.
How this happens and where am I doing wrong? Thank you for your help, best regards!
EDIT: PROBLEM SOLVED!
I changed my mobile carrier (provider) and the problem is gone. This is very interesting! I worked for hours and days to solve the problem, but this problem is neither caused by the phone nor by the software...

WCDMA (aka 3G with support for 2G/Edge) is in always-on mode on most phones, because that's how you receive and emit phone calls and, for most phones, SMS (in some more recent phones, LTE takes care of sending and receiving SMS/MMS), so if you're in an area where 3G/2G reception is poor, your phone has trouble locking on a cell with enough power to maintain contact, hence the battery drain.
4G/LTE only works for data, and voice if you have VoLTE (Voice over LTE) enabled, but works on a on-demand mode, even with cellular data constantly enabled. In other words, the 4G modem on your phone will memorize the latest position and IP address the nearest 4G tower/cell allocated it, and connect to it using the memorized settings when you need it to.
Not so with 3G, where DHCP doesn't exist, at least not the way it does in 4G: it uses PPP (Point-to-Point Protocol), where an ad-hoc IP address is attributed to each new connection, based on a pool of existing addresses allocated to the tower and its owner (carrier) by the authorities.

UglyStuff said:
WCDMA (aka 3G with support for 2G/Edge) is in always-on mode on most phones, because that's how you receive and emit phone calls and, for most phones, SMS (in some more recent phones, LTE takes care of sending and receiving SMS/MMS), so if you're in an area where 3G/2G reception is poor, your phone has trouble locking on a cell with enough power to maintain contact, hence the battery drain.
4G/LTE only works for data, and voice if you have VoLTE (Voice over LTE) enabled, but works on a on-demand mode, even with cellular data constantly enabled. In other words, the 4G modem on your phone will memorize the latest position and IP address the nearest 4G tower/cell allocated it, and connect to it using the memorized settings when you need it to.
Not so with 3G, where DHCP doesn't exist, at least not the way it does in 4G: it uses PPP (Point-to-Point Protocol), where an ad-hoc IP address is attributed to each new connection, based on a pool of existing addresses allocated to the tower and its owner (carrier) by the authorities.
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Click to collapse
Thank you for your reply!
When I googled about 3G vs. LTE battery consumption, everyone says that LTE will consume more batteries. That's make sense on first thought. So what I've been through is very interesting to me.
I think about is there a problem with my phone's 3G antenna. (footnote: I don't know about that 3g and LTE antennas are same or seperate?)
But I understand that you say this is normal, right?
Edit: I found a forum that this problem may be due to the operator (carrier). I'm still investigating...

3G and 4G operate on basically the same principle: receiving and sending "information" via radio waves.
The difference lies in the frequencies each standard uses, the way the data sent over them is modulated and demodulated, and how handsets make and maintain connection, so if you stay in the same location, and set your phone to 3G-only, then switch Airplane mode on then off, it'll take your phone longer to reconnect to the 3G cell/tower with the strongest signal (not necessarily the closest to you), because it'll have to go through the whole getting-acquainted process again, whereas in 4G, it'll go straight to the "Hey, how do you do? Long time, no see".
Now, if your phone antenna has a problem, you could be standing a few feet from the tower, in line of sight, and still get a crappy to non-existent signal. How many bars are showing on your screen is just an indication of how well your phone is receiving the signal from the tower; it doesn't mean that this signal is consistent and steady, hence the bars coming and going in real time.
If I were you, I'd download and install the Hidden Settings app from the Play Store, and run it; there, you go to RadioInfo, and you'll get a lot of information about how your phone modem actually works. It's a bit technical, but it would give you an indication.

I will try and looking for a new carrier. Thank you again. See you.

I changed my mobile carrier (provider) and the problem is gone. This is very interesting! I worked for hours and days to solve the problem, but this problem is neither caused by the phone nor by the software...