Hey there, I enjoy reading this forum but I had little to contribute with as I am an android noob. So unfortunately my first post is a question forced by the fact that something is wrong with my DHD Thank you in advance for your advices!
The problem is - when in areas with low 3G coverage the phone keeps on searching for 3G for too long instant of seamlessly switching to 2G, which often has full signal bars. This way the phone acts as if there was no signal and sends incoming calls to the voicemail even though all it has to do is to switch to 2G as soon as 3G gets too weak.
My previous phones had no problem with this. In my city the 3G quality varies from area to area but the 2G coverage is perfect almost everywhere. So I used to be sure that my phone never really disconnects from the network, it only might have dropped the 3G signal in favor of 2G while keeping the calls and everything.
I know I can disable the 3G and stick to 2G and EDGE but this way using full data capabilities of the phone turns into pain instead of pleasure.
Just to make sure and to show I did my homework, this is NOT:
- the death grip case
- a network related problem /I suppose.../
- a problem with data connection /I have never run into any problems with this/
My questions are:
- is anyone of you experiencing this?
- is there a way to force the phone to hand over the connection from 3G to 2G quicker without "blind spots"?
- does any custom ROM improve this? /I am running the latest stock HTC DHD android 2.2 with Sense/
- is there any hint that android 2.3 gingerbread should fix this issue?
Thank you, hope to find a piece of good advice here!
I`ve found this service menu and I switched the preffered network from WCDMA preferred to GSM AUTO PRL. will see if it helps.
I havent noticed any more problems since I did the switch. I think it helped. I cannot be 100% sure but I think it did the thing for me. I forgot to mention that I also switched networks mode from Auto to European but I think this has nothing to do with the issue.
fortuneman had my answer. To access the service menu on the soft phone keypad enter *#*#4636#*#* and its under Phone Information.
Switching from 2g to 3g works seamlessly. But the other way around doesn't work that well. Nothing to do with the phone. Just the net tech that has its flaws. If your in a call and switch to 2g, the call will most certainly be disconnected.
Sent from my Desire HD using XDA App
Hi everybody, I've been using CM10.1 build of July 3rd since it came out, with overall good satisfaction.
One major issue bothers me and I would like to get rid of it: when I enter a bad 3G reception area, my Defy+ disconnects from the 3g network, and it stays disconnected even if I move back to a good reception site, because it prompts for the SIM PIN and obviously I'm not watching the screen every second.
I dont think this is normal. It should retain the PIN entered at power-on, and restore 3G connectivity as network becomes available again.
I'm on italian TRE network operator, which has commercial agreements with competitors in order to fall back to nationwide roaming in areas where it is not present. Also, it only operates 3G frequencies, while when in roaming the phone should lock into 3G and 2G as well. Maybe this piece of information can help you in helping me.
I'm on mixed GSM/WCDA mixed mode (WCDMA preferred).
I tried to search in other thread but couldn't narrow down an exact asnwer, most of the topics I read dealt with RIL BUG (?).
Thanks
manualle said:
Hi everybody, I've been using CM10.1 build of July 3rd since it came out, with overall good satisfaction.
One major issue bothers me and I would like to get rid of it: when I enter a bad 3G reception area, my Defy+ disconnects from the 3g network, and it stays disconnected even if I move back to a good reception site, because it prompts for the SIM PIN and obviously I'm not watching the screen every second.
I dont think this is normal. It should retain the PIN entered at power-on, and restore 3G connectivity as network becomes available again.
I'm on italian TRE network operator, which has commercial agreements with competitors in order to fall back to nationwide roaming in areas where it is not present. Also, it only operates 3G frequencies, while when in roaming the phone should lock into 3G and 2G as well. Maybe this piece of information can help you in helping me.
I'm on mixed GSM/WCDA mixed mode (WCDMA preferred).
I tried to search in other thread but couldn't narrow down an exact asnwer, most of the topics I read dealt with RIL BUG (?).
Thanks
Click to expand...
Click to collapse
same problem for me
atma_weapon said:
same problem for me
Click to expand...
Click to collapse
What build are you on?
Hi guys
My n9005 has been having mobile connectivity issues for a while now. I'm not very knowledgeable about mobile networking and standards so I need some help diagnosing the problem before I either find a setting to alleviate the troubles or get some hardware replaced. For your reference i think has been caused by dropping my phone quite a few times so there is likely a hardware issue, i just want to better understand it to see if theres a workaround before i go spending money!
My phone works flawlessly when it displays its connect to 4G or H+ networks. However when it drops to 3G it usually does not send or receive any texts, calls, and I have no data connection.
I have fiddled around in the service menus and tried setting the band preferences to GWL, WCDMA & GSM, LTE Only, etc etc, with not much luck either having no connection or having the same issue. For reference I don't have 4G coverage at my home only H+, but when I was on holiday in the middle of no where at the National Park (I live in New Zealand) I had 4G connections the entire time with no dropping.
Now I have no idea what mobile networks use what standards/protocols so if you could recommend a setting change or identify what I should get replaced that would be great!
Cheers
Hi Everyone,
I'm usually just a reader on XDA, but I have found a problem that appears not to have been solved and wondered if anyone had any insight.
Problem Summary
When in an area (or network) with only HSPA and UMTS (strong HSPA/UMTS signal, but with no LTE or 2G available), the phone will drop from H+ to 3G erratically, always dropping the data connection. Traditional phone calls are not affected.
Detailed Description
I have a OnePlus Two and have 2 SIM cards. My first SIM Card is with Bell Canada (Virgin), and the second SIM Card is with WIND Mobile Canada.
Neither Bell nor WIND operate a 2G network, so the lowest the service can fall to is UMTS/3G.
Initially, I didn't notice the problem because Bell also operates an LTE network, and there is no problem with dropping the data connections when on LTE.
When I switched to the WIND SIM card (which only operates HSPA and UMTS), I noticed a problem where the phone would initially connect to H+, begin downloading whatever is needed (say, streaming music), but then part way through the download, the connection would switch to 3G, and the data would effectively stop. Within a minute, the service would jump back to H+ and download some more, but this cycle would continue (H+ --> 3G --> H+ --> 3G... ), with no way of knowing 1) how long the H+ connection would last before dropping to 3G (usually less than 30 seconds), and 2) after dropping to 3G, how long before going back to H+. This problem makes the phone almost useless when there is no LTE.
The most obvious troubleshooting I did was move to locations of better signal but I quickly ruled that out, as nothing seems to remove this problem. Other things I tried was to: move locations in the city, reboot phone, hard reset phone, flash most updated version of Oxygen, unlock bootloader, root, try the HSPA Keepalive app, swap SIM1 to SIM2, and many other things.
I originally thought this was a network issue, but I put this WIND SIM in another phone and there was no problem in any way that resembled this problem.
I also ruled out this being a network-specific problem, as I have taken a trip with the Bell SIM to an area where Bell does not have any LTE coverage (only HSPA and UMTS) and the same problem occurs on Bell as with the WIND SIM.
I have found people who had this problem on the OnePlus One tend to recommend using 2G to stabilize the connection, but this is not possible on Bell or WIND. That solution also would not provide adequate data speeds.
Remember this problem only affects data connectivity, as 3G traditional phone calls have no problems.
Question
Does anyone know if there is a way to adjust the conditions when the OnePlus Two will choose to switch from H+ to 3G?
Does anyone have any easier suggestions?
Thank you all in advance, because this rendering this phone almost useless when there is no LTE coverage.
I believe your problem is that phone it's dualsim standby, that means only one modem that alternates signal for both sims, I think normal would be alternating from faster network to slower network on sim without data.
Having to change to g3 between sims theres something stoped in the modem and data connection is also stopped.
You have no problem with voice calls because other sim is automatically turned off and unreachable.
There's nothing you can do if you're forced to only 3g on both sims
By 3g I mean 3g or h+ which to my knowledge are the same
Hope I was helpful and not wrong or more confusing
Sent from my ONE A2005 using Tapatalk
fburgos said:
I believe your problem is that phone it's dualsim standby, that means only one modem that alternates signal for both sims, I think normal would be alternating from faster network to slower network on sim without data.
Having to change to g3 between sims theres something stoped in the modem and data connection is also stopped.
You have no problem with voice calls because other sim is automatically turned off and unreachable.
There's nothing you can do if you're forced to only 3g on both sims
By 3g I mean 3g or h+ which to my knowledge are the same
Hope I was helpful and not wrong or more confusing
Sent from my ONE A2005 using Tapatalk
Click to expand...
Click to collapse
Thanks, I will try disabling the second SIM to see if there is a bug with the dual-sim...
What it currently does with the second SIM is it either shows "R" for roaming or just emergency only, but perhaps there is a software issue so I'll see if disabling the second SIM makes a difference.
biomedeng said:
Thanks, I will try disabling the second SIM to see if there is a bug with the dual-sim...
What it currently does with the second SIM is it either shows "R" for roaming or just emergency only, but perhaps there is a software issue so I'll see if disabling the second SIM makes a difference.
Click to expand...
Click to collapse
Though strange, this workaround fixes the issue. Thank you to fburgos for the suggestion!
So just in case anyone ever finds this issue creeps up on them, the solution is to DISABLE the SIM you are not using. It's not the most convenient workaround to swap SIMs, but the other SIM will be in Emergency Mode, so it really makes no functional difference.
On the technical side, it does appear that there is actually a bug in Android for a very uncommon network configuration. It will only appear in this exact configuration:
SIM1: Network has HSPA/3G only, no LTE or 2G to move to
SIM2: Network also only has HSPA/3G with no LTE or 2G
The non-data SIM does NOT connect to a roaming network (connects with "Emergency Only") - if it connects to a roaming 2G network, this problem does not happen.
The data SIM connects to HSPA/3G
Both SIMs are active
I'm not sure if this will happen anywhere else in the world other than having a WIND Mobile Canada SIM and Bell or TELUS Canada SIM
If anyone has insight on how to report this to Google, or someone else who can confirm my theory, that would be great!
Try this:
1. You need to make sure you have the correct LTE APN selected in mobile networks and LTE as preferred type.
2. Go to dialer and type in this: *#*#4636#*#*
3. Phone Information
4. Set Preferred Network Type to: LTE/GSM (PRL) - you an play with which one you wanna use but the one I said works for sure. on other roms I have" TD-SCDMA, GSM/WCDMA and LTE"
5. Now click TURN OFF RADIO and wait WAIT few secs. will that button turns to Turn Radio ON
6. Now TURN ON RADIO and wait
7. when u see the triangle for the signal is back, at least black , go down and lick SMSC REFRESH then UPDATE.
8. now just go back to APN settings and go into your LTE APN
9. Change Bearer to LTE
biomedeng said:
Hi Everyone,
I'm usually just a reader on XDA, but I have found a problem that appears not to have been solved and wondered if anyone had any insight.
Problem Summary
When in an area (or network) with only HSPA and UMTS (strong HSPA/UMTS signal, but with no LTE or 2G available), the phone will drop from H+ to 3G erratically, always dropping the data connection. Traditional phone calls are not affected.
Detailed Description
I have a OnePlus Two and have 2 SIM cards. My first SIM Card is with Bell Canada (Virgin), and the second SIM Card is with WIND Mobile Canada.
Neither Bell nor WIND operate a 2G network, so the lowest the service can fall to is UMTS/3G.
Initially, I didn't notice the problem because Bell also operates an LTE network, and there is no problem with dropping the data connections when on LTE.
When I switched to the WIND SIM card (which only operates HSPA and UMTS), I noticed a problem where the phone would initially connect to H+, begin downloading whatever is needed (say, streaming music), but then part way through the download, the connection would switch to 3G, and the data would effectively stop. Within a minute, the service would jump back to H+ and download some more, but this cycle would continue (H+ --> 3G --> H+ --> 3G... ), with no way of knowing 1) how long the H+ connection would last before dropping to 3G (usually less than 30 seconds), and 2) after dropping to 3G, how long before going back to H+. This problem makes the phone almost useless when there is no LTE.
The most obvious troubleshooting I did was move to locations of better signal but I quickly ruled that out, as nothing seems to remove this problem. Other things I tried was to: move locations in the city, reboot phone, hard reset phone, flash most updated version of Oxygen, unlock bootloader, root, try the HSPA Keepalive app, swap SIM1 to SIM2, and many other things.
I originally thought this was a network issue, but I put this WIND SIM in another phone and there was no problem in any way that resembled this problem.
I also ruled out this being a network-specific problem, as I have taken a trip with the Bell SIM to an area where Bell does not have any LTE coverage (only HSPA and UMTS) and the same problem occurs on Bell as with the WIND SIM.
I have found people who had this problem on the OnePlus One tend to recommend using 2G to stabilize the connection, but this is not possible on Bell or WIND. That solution also would not provide adequate data speeds.
Remember this problem only affects data connectivity, as 3G traditional phone calls have no problems.
Question
Does anyone know if there is a way to adjust the conditions when the OnePlus Two will choose to switch from H+ to 3G?
Does anyone have any easier suggestions?
Thank you all in advance, because this rendering this phone almost useless when there is no LTE coverage.
Click to expand...
Click to collapse
I have the same problem. Do you already have solved it?
I use only one SIM card so it is not a problem two cards.
really you do not have this problem? if no one knows the solution?
compared with my htc butterfly 2 and another low-end android, one plus 2 running latest Oxygen OS has serious connectivity issues. I compared the signals strength using same sim card in same location (including being connected to the same tower) and One Plus 2 keeps dropping the connection and has really poor signal strength. I have tried the *#*#4636#*#* and tried different network modes, but none of them are helping. Its a real disappointment that the basic feature of this phone is screwed up.
I have tried with CM13 as well. Any ideas if this is a modem version issue?
odeccacccp said:
Try this:
1. You need to make sure you have the correct LTE APN selected in mobile networks and LTE as preferred type.
2. Go to dialer and type in this: *#*#4636#*#*
3. Phone Information
4. Set Preferred Network Type to: LTE/GSM (PRL) - you an play with which one you wanna use but the one I said works for sure. on other roms I have" TD-SCDMA, GSM/WCDMA and LTE"
5. Now click TURN OFF RADIO and wait WAIT few secs. will that button turns to Turn Radio ON
6. Now TURN ON RADIO and wait
7. when u see the triangle for the signal is back, at least black , go down and lick SMSC REFRESH then UPDATE.
8. now just go back to APN settings and go into your LTE APN
9. Change Bearer to LTE
Click to expand...
Click to collapse
Did It.. But it seems like it didn't solve my problem..
I use MVNOs because I am on a tight budget. With MintSim and MetroPCS which use T-mobile I had a below average signal on this phone and with Boost which uses Sprint I had a dreadful signal. Currently I'm using a Verizon MVNO which has an excellent signal except for one issue. The signal will be great for a day then it will become poor. The signal strength will not return to previous strength unless I power the phone down for a minute and then turn it back on. Then the signal will be great for about a day again until it goes bad and I have to turn the phone off and on again.
I tried a factory reset which didn't help. Toggling airplane mode on and off doesn't help. Rebooting the phone instead of powering off doesn't help. Changing the preferred network type in settings doesn't help.
If I type *#*#4636#*#* and change the network from LTE/CDMD/UMTS (Auto PRL) to one where LTE is replaced by a different network and then switch back to LTE/CDMA/UMTS that restores the strong LTE signal but powering the phone on and off is faster.
I could change the APN settings with T-Mobile but with Verizon the APN settings are greyed out and there is no way to edit the current APN or add a new one.
Mobile Data Always Active is already enabled in developer options.
Does anybody know what I could do so the Verizon network strength doesn't eventually drop requiring shutting the phone off and turning it back on to refresh the network connection?
I have owned a lot of phones over the years but never one with signal issues like the PH-1. Essential support won't help because they escalated my ticket to RMA when I was still on T-Mobile. Since an RMA would provide me with a refurbished phone that somebody else probably returned due to the signal strength issues I would rather figure out how to get my current phone to work right with Verizon if that's possible.
When I went out I had no data despite the signal meter showing a strong signal. It turned out my phone had the wrong APN (Verizon instead of Trac Wireless) but unlike GSM carriers the APN settings are locked so TotalWireless (which is owned by Trac Phone) had to send my phone the correct APN. My data actually works now and so far the signal has been very strong but it's too early to say if the same signal problem I wrote about will pop up again since the APN was only corrected a few hours ago.
If nobody else has experienced a similar issue with the quality of the Verizon signal losing strength after the phone has been asleep for an extended period of time then maybe my phone is defective after all. I guess I'll just keep my fingers crossed that the signal still looks good when I wake up tomorrow.