Related
Hello,
I know the place in the phone options (on the band page) where you can
change the network from GPRS to UMTS (3G).
But is this possible to do programmatically with RIL or TAPI or another API
on the pocket pc device?
Thanks for any suggestions.
I support this request; Many topics on the board cover erratic behaviour with JJ, and ppl return their device to no avail. Swopping to another operator often helps. The issues SEEMS to be a poor UMTS reception with a given SIM or location, and this results in JJ trying to connect to UMTS or even latching on to UMTS but with an abysmal signal. After more than 15mins (annecdotal) of this is fails to ever go back to GSM without a reboot.
Solution is to turn off UMTS, but that's darned inconvenient cos you OFTEN want 3G speed (mail, RSS, google/surf).
Here's a way forwards; can someone tell us what reg entry gets changed when we select GSM vs UMTS? I will then write a couple of .reg files that can be launched from iLauncher (or whatever). Buzz coule probably write a switching app like he did for BT.
i have the same problem
When i use my Universal at home, there is pretty low level of UMTS/WCDMA signal and full level of standard GSM signal. By default Universal changes between those two sources automaticaly. But in my case, the quality of WCDMA signal is often varying just around critical level. So the result is that Universal changes band to GSM and back. And then again. And again. And... Due this, there is sometimes not possible to make data connection, because Uni is so much occupied by changing bands back and forth...
I would like to find a better solution, than select only GSM manually in phone settings. Especially because i have to unselect it manually every time when leaving home :-(
Is there any way to set treshold value (i expect increase it) for automatic switching between WCDMA and GSM?
I still do not know how to switch from UMTS to GPRS and back
with some API function (or AT command) on the device.
If I get these Infos from someone that would be great.
Then I could write a tool that checks the signal quality
and the network status and if UMTS signal is too low
it will activate GPRS.
I think this can be done with RIL API but have not found
any infos.
Houser
Anything new aobut this umts switch problems??
I do have the same problems, often i am unable to make calls, always when umts is on...
would be happy to hear something,
thomas
craigiecraigie4 said:
I support this request; Many topics on the board cover erratic behaviour with JJ, and ppl return their device to no avail. Swopping to another operator often helps. The issues SEEMS to be a poor UMTS reception with a given SIM or location, and this results in JJ trying to connect to UMTS or even latching on to UMTS but with an abysmal signal. After more than 15mins (annecdotal) of this is fails to ever go back to GSM without a reboot.
Solution is to turn off UMTS, but that's darned inconvenient cos you OFTEN want 3G speed (mail, RSS, google/surf).
Here's a way forwards; can someone tell us what reg entry gets changed when we select GSM vs UMTS? I will then write a couple of .reg files that can be launched from iLauncher (or whatever). Buzz coule probably write a switching app like he did for BT.
Click to expand...
Click to collapse
HKLM\SOFTWARE\OEM\UMTS
OPMODE=0/1/2 (AUTO/GSM/UMTS)
Have had this phone a coupla months, happy with it except the stupid GPS problem and some other connection problem.
When using wifi connection at home, if i stop browsing and close the screen for a few minutes and go back to surf internet, the wifi will stop working, turning wifi off and on again will make it work. Not too difficult but sometimes this feels sucks.
second problem is, occationally i will lose the "3G" or "H" sign on the top and cannot connect to internet using 3G data connection. i have no idea why this is happening. sometimes when i am out on street, try to check some information online, 3g is my only option and it really bothers me when it stops working. i'm using orange. all setting are as original.
Anyone knows how to solve these 2 problems?
the phone either works on
850/1900/2100
or
900/1900/2100
so depending on the model that you purchased
and where you live
also the cell phone provider that you are using
you might not get the full band usage of your phone
for example using the above models on a phone service that only uses
1700/1900/2100
then you are cripled
some telcos only use 1 band or 2 bands at most
1700 or 2100 for example
ehe12 said:
Have had this phone a coupla months, happy with it except the stupid GPS problem and some other connection problem.
When using wifi connection at home, if i stop browsing and close the screen for a few minutes and go back to surf internet, the wifi will stop working, turning wifi off and on again will make it work. Not too difficult but sometimes this feels sucks.
second problem is, occationally i will lose the "3G" or "H" sign on the top and cannot connect to internet using 3G data connection. i have no idea why this is happening. sometimes when i am out on street, try to check some information online, 3g is my only option and it really bothers me when it stops working. i'm using orange. all setting are as original.
Anyone knows how to solve these 2 problems?
Click to expand...
Click to collapse
3g nodes and 2g bts wont give you the same area coverage, yes you will lose the H and drop down to 3g if your -db rating (signal is low) is at the highest limit for the cell and it deems you either need handing off to another site or you were one of the last ones to be allocated a slot and get kicked.
its how the cookie crumbles, no where will give you 100% coverage and if u are close to a small site thats overloaded with traffic you will always get crappy uplink and downlink...
b
I dont know where you are or what provider you use, but I have the same problem with my I900M on bell. it is apparently a widely known issue with Bell, and they associated my phone with the ongoing ticket incase it gets resolved they'll contact me.
Also, when I lose the 3g, ts a good chance my phone is going to lock up and need a battery pull to boot back up.
So Basically if I leave the house or wifi spot, I try not to show people my internet on my phone so it doesnt look like I'm carrying a brick in my pocket everywhere.
anarchyuk said:
3g nodes and 2g bts wont give you the same area coverage, yes you will lose the H and drop down to 3g if your -db rating (signal is low) is at the highest limit for the cell and it deems you either need handing off to another site or you were one of the last ones to be allocated a slot and get kicked.
its how the cookie crumbles, no where will give you 100% coverage and if u are close to a small site thats overloaded with traffic you will always get crappy uplink and downlink...
b
Click to expand...
Click to collapse
so that's something to do with the carrier? Thanks for the explanation!
this is by no means a definitive list, but here are a few links to articles i have read that have helped improve my battery life drastically. if you have any other useful information, please share.
----------------------------------------------------------------------------------
instead of thinking, 'i need to replace the battery because it doesn't last long enough', try thinking 'how can i use my phone in a manner which doesn't unnecessarily drain its battery'.
HowToGeek.com - Complete Guide to Maximizing Your Android Phones Battery Life
Lifehacker.com - Android Task Killers Explained; What They do and Why You Shouldn't Use Them
Reddit.com - I Stopped Using a Task Killer Last Week to See if There is a Difference; There is, and its Huge
Reddit.com - Further Discussion on the Proper Use of Task Killers
Lifehacker.com - JuiceDefender Simplifies Automated Android Battery Saving
Lifehacker.com - Watchdog Monitors Your Android for Runaway Processes
Thanks for this -
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
I'm not sure about the stock rom, but on cm roms there is the option to add this option into the power widget bar and makes switching between modes a one click affair. I keep my phone on 2g (gsm) unless I'm trying to watch a video. It definitely helps.
Sent from my cm7 Aria using XDA App
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
I am trying that out and using GSM (PRL), it seems to do very well, and automatically switches between HSDPA and EDGE
Just switched mine from WCDMA preferred to the CDMA/GSM Auto (PRL)
I'll see how it goes.
that battery has lasted longer than usual, even with the extreme cold of the midwest, since I was shoveling for 3 hours. 8 hours off of charger, moderate use, still at 80% with GSM (PRL) on
tried the GSM(PRL) thing, works great! thanks for this thread
Been noticing the drain, too. I've switched to CDMA/GSM Auto (PRL), but it still shows the "H" at the top? I think that's correct, but wanted to ask.
So how often is it kicking you guys to EDGE? It may give you better battery life, but your data will be slow as hell if you aren't on 3G no? Or do you guys not care?
gtg465x said:
So how often is it kicking you guys to EDGE? It may give you better battery life, but your data will be slow as hell if you aren't on 3G no? Or do you guys not care?
Click to expand...
Click to collapse
I switched to cdma/gsm auto (prl) about a week ago and mine hasn't switched over to Edge at all.
Sent from my cm7 Aria using XDA App
fnds said:
Good tips. Thank you for posting.
I found a tip about reconfiguring the radio settings here:
community.htc.com/na/htc-forums/android/f/96/p/7495/34268.aspx
"I have an HTC Aria, I found out that the radio is setup completely wrong (power hungry) by default. I can now get over 48 hours of moderate use out of a phone that was barely able to make it to 12 hours before.
First of all, on AT&T, GSM (which is the 2.5G EDGE network) is much more power efficient than CDMA (which is 3G).
The default settings for 2-3G, have the phone constantly trying to find the strongest CDMA tower-signal it can find for 3G. If it can't find any 3G, it switches to 2.5G (EDGE). This eats your battery and is why your fancy new smart phone has a usable life of only 8-12 hours.
Now, the reason that your phone is always searching for the best signal is that, in area with only average coverage, the phone will always be trying to get you the best connection. This makes AT&T's 3G feel fastest and you will always get the most 'bars' available - at least while your phone's battery holds out.
Luckily, some engineer over a decade ago came up with a solution. Instead of scanning, have the phone ask the current tower for a list of nearby towers. This is called a PRL.
The way the PRL works, the phone contacts the tower to which it is connected and asks the tower for a list of nearby towers and their power outputs. Then the phone will base its decisions to switch towers based on that list.
Where I live, 3G is everywhere and making the phone constantly search for a better tower is a waste of time and energy. So instead, I switched my phone to prefer GSM (ie. EDGE) over CDMA unless there is a poor signal, then it switches to scanning for 3G (which supposedly has more range and less interference) just like it used to.
The settings to do this are normally hidden by the carrier. For AT&T on the Aria, I had to enter a USSD code:
*#*#4636#*#*
Then select Phone Information from the menu. The drop down you want is called Set preferred network type: and the option I selected was GSM/CDMA auto (PRL) and my battery life has been fantastic."
Has anyone tried this? How did it go?
Thanks.
--fnds
Click to expand...
Click to collapse
Sent from my HTC Liberty using XDA App
I have know idea how to do this. I dial *#*#4636#*#* and it calls it and says blah blah wrong number. Can somebody explain please. I'm a noober on this one.
"the only good bug is a dead bug"
Figured it out. I use dialer 2 app for my default phone. Apparently you have to use the stock dialer to enter ussd code.
"the only good bug is a dead bug"
I'm on the Three network, have an unlocked HTC desire HD with 17 m2 radio.
Normally I get terrible signal in the flat that i live in, its a granite building in Aberdeen. Occasional the signal is around 1 bar, sometimes grey, and most of the time its X.. (no service), but i still manage to get 3G or H. When looking at the APN settings and specifically at available networks when doing a manual search, next to 3 is a green star which I assume means it's connected to 3 mobile network. But sometimes i get amazing signal, full bars, which puzzled me! so I looked at the available networks and next to 3, there was no star, so i tried calling a number and it rang and came through. I also tried using mobile internet when in this "good coverage" state, and google would not load (G is displayed in the notifications bar). After a while, the bars would drop to 1 or grey, and i would then get H or 3G, and google loads again. What's going on? and how can i take advantage of this when i have no signal.
try and find the app called open signal maps
that can be used to see where the signal-towers are
and how good the signal is
or use this site and search your adress
http://opensignalmaps.com/
sincere regards,
blokhoofd
The antenna is really wierd.
Normally I only get 2G connection.
But if I completly take my hand off the lower cover and lift the phone up a bit for a better signal, I get a 3Mbps connection, though as soon as I lower my phone back to normal the 3G signal is completly gone or gets really bad (zero bars and lower than EDGE speed)!
The antenna in this phone sucks really bad, my old Nokia phone atleast had a stable connection.
This is very bad news... I was considering DHD, but if there are isseus with gsm signal than I am really worried... Is it also happening on the stock ROM?
As long as network coverege is good you should be okay.
I swaped my SIM card with a friends and with better coverege, 3.5G worked good (solid 2Mbps), only slight drop if SIM cover is completly covered, which doesn't happen in normal use.
I just can't understand how I can get such high speeds with my SIM while on a badly covered area. haven't tested how well other devices pick up the 3G signal (my old phone wasn't 3G yet)
I'm still using stock ROM btw.
Have you tried a different radio?
People are reporting different results with them, so might be an idea to play around and see if anyone of them works better for you
I've tried the new Orange radio and I'm getting better signal, although threes coverage isn't great I would expect the device to seamlessly change between 3.5g and gprs but it doesn't it'll get stuck on hsdpa network until the x appears and sometimes it'll go to gprs and go back to three bars. Before it would be on x all the time and that's probably why the battery was quite ****. 3g doesnt penetrate buildings very well and I live in a granite building so would explain why I get better gprs signal. I just wish the antenna was smart and changed seamlessly.
Sent from my Desire HD using XDA App
So annoying dhd still not selecting the next best connection just no service but if I select to detect network automatically it connects eventually
Sent from my Desire HD using XDA App
Hi everyone,
I already looked for an answer in the forum but nothing conclusive.
My moto g4 play loses signal during calls. The sim card is 3G and so I changed the network manually to 3g on the phone. However the problem continues and I think it even got worse. It happens especially when I'm moving, in the car, etc.
Is there any real solution for this problem? I have seen many users complaining but I did not realize if there was a solution or not.
Can you help me?
Thank you
Since the SIM is 3G, I'm going to assume the network you're using is GSM (ATT/Tmo). It is possible that the cell towers in your area operate on a specific type of GSM frequency, and your signal loss is due to the phone trying to connect to towers not supported by your carrier. If a call drops again, check the Roaming status of your phone in Settings and see what turns up.
Also, it seems odd that you would have to change the network settings at all. Even if the phone is set to prioritize LTE, it should automatically detect the 3G signal and adjust accordingly.