I recently purchased an Xiaomi Redmi Note 3 Pro phone (kenzo), it covers all the bands that rogers uses in my area in Canada, I believe.
https://en.wikipedia.org/wiki/Rogers_Wireless
I can connect with the phone on LTE, HSPA+ with no problem, if available. Sometimes, if I am in certain area's, the signal indicator drops to 3G .... it shows a decent signal, but no calls or data can go through.
In this example on the following chart, the first WCDMA connection,my phone only indicates 3G and I can not make a call or use data. When my call attempt is done, it goes back to LTE. Then I try again. Then for the second WCDMA connection on the chart, I am connected as H+, I can make a call and use data. Whenever this phone connects to CID 31072 the problem happens. When I connect to CID 31075, no problem. These are just examples of towers that I reach from my home. I get the same problem occuring other areas.
Any suggestions on what I need to change on my phone? Is my phone making a kind of 3G connection for some reason, which Rogers doesn't support? I have tried everything I can think of, Miui dev versions, CM13, LineageOS 14.1 etc, change Android Radio Menu settings, etc.
Nothing seems to fix this issue.
Any advice would be greatly appreciated!
I have been using Network Signal Guru, and have figured out that the phone will connect calls data on 3g if the band it finds is B5-850M .... if the tower tries to connect to is B2-PCS-1900 the call fails.
I tried to block the use of band 2 with Network Signal Guru, but it seems to still use it when it finds it.
I have since flashed a LineageOS rom and used the Network Signal Guru to disable band 2 WCDMA. The phone has not been experiencing the issue at all since. I am cautiously optimistic that I have found a solution. Still not sure why this band doesn't work here though.
Related
Hi, if anyone has any advice, it would be greatly appreciated. I just got a Kenzo and have been having the same issue with MIUI 8 that it came with, and now with the cm-13.0-20160820-SNAPSHOT-ZNH5YAO0J4-kenzo ROM, cm-13.0-RADIOS.zip, and Radon-V3.5-Kenzo-Cm-Mm.zip I just flashed today.
I thought the new rom might fix my issue, but apparently not.
Occasionally, I can make or receive calls. Maybe 1 out of 20 times. It seems like only if the "H+" is showing when I make the call. LTE data is working fine. Usually when I make a call, or a call comes in, it goes from LTE to 3g, then the call doesn't connect. Using a app called NET Monitor, it shows the it connected to "RSSI WCDMA" during the period when the call is trying to connect.
I am in Canada, and the phone seems to support the correct bands, but this issue persists. I have tried two different sim: one from Rogers and one from Bell....both have the same issue. My samsung s6 doesnt have the issue with the same sim.
I am at a loss and would really appreciate assistance from someone who knows more than I
thanks!
If I set to 3g preferred, then run this HSPA+ Tweaker (3G booster) I can make a call. Network indicator shows H+
[ I have a connection graph, but can't post it yet since i am too new. ]
Call worked fine for this scenario
If I set to LTE preferred, I can't usually make a call. Network indicator shows LTE, then switchs to 3g. The connection graph looks like this. First green line on "serving cell" graph, call came in, worked properly. Second green line is when I called phone, but never it never rang . Shows same if you try to make a call.
[Will post graph when I can]
First call worked, second didn't in this scenario.
I think the radio is just not receiving a strong enough signal. The signal in same location, same sim, shows up much stronger with my Samsung S6.
Not sure if the phone is defective, or just not as good. Anyone ever compare WCDMA reception between these two phones?
I'm experiencing an odd issue on the SD RedMi Note 4 of my wife (ROM: v8.5.8.0 NCFMIED): where LTE signal is weak and other mobiles switch to GSM (2G) and are still reachable, the RedMi of my wife is still trying to get LTE signal, ending up offline for _long_ times.
I tried to switch preferred mode to "LTE/UMTS auto (PRL)" (mido default choice when "prefer LTE" is selected is "LTE/TD-SCDMA/UMTS", which appears to include the Chinese 3G standard too) like my OnePlus 3, which never looses network, but it didn't help: the only way to have it reliably reachable is switching to "GSM only".
I didn't find anything relevant neither by searching nor by browsing the first 30 pages of this subforum: is there anything we can do to improve this? Thanks!
go to about phone. tap multiple times on total memory, a window will open up. open phone information 1,2. choose type of network you want from multiple options
[email protected]!$h said:
go to about phone. tap multiple times on total memory, a window will open up. open phone information 1,2. choose type of network you want from multiple options
Click to expand...
Click to collapse
That indeed solves the issue as I wrote, but I don't think that my wife would be happy if I tell her she has to check the signal all the time and, eventually, _try_ to manually switch to "GSM only", and go back when the signal strength improves... that should be modem job!
Update: the affected SIM was in slot 2; moving the SIM to the first slot seems to improve the mode switch. Still the sensitivity doesn't seem exceptional, or perhaps there is some other issue (1), but at least it seems to correctly switch from 4G to 3G and even 2G where the signal is weak.
Testing in "LTE/UMTS auto (PRL)" mode now (I don't need TD-SCDMA here, I assume there is less overhead with less modes); wondering whether is a modem (read: Qualcomm) issue or a MIUI bug.
(1) sometimes the device still looses the network where my OP3 seems connected with very weak signal (-105 dBm) and LTE Discover reports "Potential eCSFB issue detected" (which sounds odd since eCFSB is a CDMA thing, and there aren't any CDMA network here in Italy AFAIK: could it be the way LTE Discover tells that the phone is unable to handshake an existing network?), until it reconnects. Moreover, it seems that RN4 tends to prefer 3G over 2G even when mobile data is off, which is not a good strategy IMO.
Edit: LTE Discover reports "Potential eCSFB issue detected" also on OP3, which works perfectly: it seems its shown when the terminal was unable to successfully register on a network and stays idle until the next connection attempt
I have sort of similar and opposite problems in the USA.
Mine switches from LTE to whatever H+ is and then never switches back on its own. I'm blaming Xiaomi over Qualcomm.
https://play.google.com/store/apps/details?id=com.atejapps.networksignalrefresherpro
Try this app and see if it is of any help
I have the same problem. I have a weak signal reception in my house. Is there a app that can put a phone to 2g when I am on wifi ?
Poslano z mojega Redmi Note 4X z uporabo Tapatalk
night_mare said:
https://play.google.com/store/apps/details?id=com.atejapps.networksignalrefresherpro
Try this app and see if it is of any help
Click to expand...
Click to collapse
I tried it, it worked if I used the root option and manually hit the refresh button. I read that the auto refresh only works if the signal is one bar or whatever or less.
My signal is strong when it's on H+, so it would never get low enough to make it auto refresh.
What I need is something that would switch my preferred network to Prefer 3G and back to Prefer LTE whenever I'm on H+ for a while, because that gets me back on LTE every time provided that there's LTE in that area.
My Redmi Note 4x international should be capable to connect to the 1800mhz band, which is available in my neighborhood. Sadly I haven't had 4g or LTE since I've gotten this phone (4 weeks) any ideas why it won't connect?
Vodafone Netherlands in Utrecht city.
night_mare said:
https://play.google.com/store/apps/details?id=com.atejapps.networksignalrefresherpro
Try this app and see if it is of any help
Click to expand...
Click to collapse
Thank you: started testing. It seems that, despite the better signal, even after refreshing the device still ignores 2G and tries to connect in LTE or H+ mode. I'll see in the next days.
barvna said:
I have the same problem. I have a weak signal reception in my house. Is there a app that can put a phone to 2g when I am on wifi ?
Click to expand...
Click to collapse
Yep, that's very same issue I'm experiencing. I was feeling alone: in the MI forums I couldn't find no one complaining about that.
Did you notice that when the device connects to a Wi-Fi network the cellular signal indicator suddenly rises (it appears to indicate Wi-Fi signal strength) and appears "4G" next to operator's name, even if cellular data is off?
Too bad, if RN4 didn't have such a bugged radio it was a real bang for the buck.
Vennesch said:
My Redmi Note 4x international should be capable to connect to the 1800mhz band, which is available in my neighborhood. Sadly I haven't had 4g or LTE since I've gotten this phone (4 weeks) any ideas why it won't connect?
Vodafone Netherlands in Utrecht city.
Click to expand...
Click to collapse
[Shot in the dark] Did you check your APN settings?
Yes I did, all as it should be
Vennesch said:
Yes I did, all as it should be
Click to expand...
Click to collapse
Try to get some more info from the "LTE Discovery" app: is the device registered on the 4G network but internet access is absent or the device doesn't even register on the 4G network? Does the device detect the 4G signals?
In this thread we are discussing about the opposite problem: our devices don't switch to 2G when the signal is weak...
night_mare said:
https://play.google.com/store/apps/details?id=com.atejapps.networksignalrefresherpro
Try this app and see if it is of any help
Click to expand...
Click to collapse
Unfortunately it didn't help: it doesn't seem to improve overall operation. It even asks to refresh the Wi-Fi connection when there is no cellular signal...
There is really something ill in this modem. Sometimes the signal indicator shows Wi-Fi signal strength instead of cellular. I hope some future release will fix at least some of these issues.
MaUop3 said:
Unfortunately it didn't help: it doesn't seem to improve overall operation. It even asks to refresh the Wi-Fi connection when there is no cellular signal...
There is really something ill in this modem. Sometimes the signal indicator shows Wi-Fi signal strength instead of cellular. I hope some future release will fix at least some of these issues.
Click to expand...
Click to collapse
Sorry to hear that. Try to report to the developer, so he can solve the issue.
night_mare said:
Sorry to hear that. Try to report to the developer, so he can solve the issue.
Click to expand...
Click to collapse
Thank you. I think it's not necessary: since yesterday I'm running MIUI v9.0.3.0 and things improved considerably. I'm quite sure the issue was MIUI 8 which had a complete modem mess, not the app, that was doing its honest work just as it was possible.
I just bought a LG G5 RS988 (Unlocked Model) recently and at first I had really bad connections indoor I said to myself this is probably normal.
Then I just saw that the phone seems to be only in 3G in the corner but apparently it's suppose to be able to get 4G.
I googled it and apparently it happened since the nougat update, many users lost the ability to use the 4G connection.
I'm I the only one with this issues ?
The phone boots, it stays on LTE, on the main screen then once you logon it switches to 3G WCDMA and stays there.
I have 3 options in the data menu tried all the ticks (Global) and it picks up the LTE 3G, the LTE/GSM somehow disable the whole data mode and the other one too, and the only way to get the phone to have a very good connection is on GSM only by accessing the secret DEV debug option :
*#546368#*988#
Select Field Test, Modem Settings, and RAT Selection, then selecting GSM Only.
Then my data bar goes full or 4/5 inside my apartment near the window.
GSM / WCDMA / LTE Auto :
LTE only : Makes it a X Disabled
LTE / WCDMA : Goes on 3G 2/5 bars
LTE / GSM : Goes on 3G 2/5 bars
GSM / WCDMA : Goes on 3G 2/5 bars
WCDMA : Goes on 3G 2/5 bars
GSM Only : Goes on normal G 4/5 bars
It's like the LTE doesn't work at all...
My experience
I've been researching the issue myself. I have found that it's either your carrier's network doesn't "whitelist" your IMEI number, so it won't connect to LTE, or your phone doesn't fully support all of the bands that are needed to connect. I have the RS988 and mine needs to have airplane mode toggled on and off or the carrier settings toggled to global and back in order for it to go to LTE. Otherwise if I try to use the LTE only setting, I cannot make or receive calls.
In other forums, they mention downgrading the OS to marshmallow to get LTE working again. I tried this... It was painful to perform and after a bootloop I finally got the phone to stock marshmallow. However, once I finally got it working and I made a call, it went right back down to H or H+ and stayed there.
My impression of the issue is that someone could make an app to toggle back and forth from the original carrier setting (LTE/GSM/UMTS) to a second setting (GLOBAL) and back to the original network setting (LTE/GSM/UMTS) after a call is made... This would be a simple way to fix the issue and get back on LTE even though it isn't perfect. This is probably your best bet to get on LTE because even custom ROM's don't seem to fix the issue for me.
It's a very bizarre issue. If anyone else has a better answer or more knowledge on the issue, please let me know.
If anyone knows why this phone seems to specifically have these issues, also please let me know.
TechGuruer
Poco F1 (MIUI Global Stable V11.0.8.0.QEJMIXM ROM) has significantly better 4G signal strength than 3G or 2G. In fact I got problem with that, when I'll recieve call or make a call, the phone automatically from 4G goes to 3G or 2G, and in that moment signal strength bars goes from 5 bars (4G) to 1-2 bars (3G) and often other side cannot hear my voice. Later I choose manualy network (3G or 2G) and when I try yo make a call => "Cellular network not available"
What should be the problem? Is it software or hardware problem? ...btw I make a clean install/flash thru fastbot of MIUI Stable V11.0.8.0.QEJMIXM few days ago, but I cannot notice some differences
VkriLAB said:
Poco F1 (MIUI Global Stable V11.0.8.0.QEJMIXM ROM) has significantly better 4G signal strength than 3G or 2G. In fact I got problem with that, when I'll recieve call or make a call, the phone automatically from 4G goes to 3G or 2G, and in that moment signal strength bars goes from 5 bars (4G) to 1-2 bars (3G) and often other side cannot hear my voice. Later I choose manualy network (3G or 2G) and when I try yo make a call => "Cellular network not available"
What should be the problem? Is it software or hardware problem? ...btw I make a clean install/flash thru fastbot of MIUI Stable V11.0.8.0.QEJMIXM few days ago, but I cannot notice some differences
Click to expand...
Click to collapse
It means that VoLTE (Voice over LTE) is not enabled or it is not available in your region. That is why it is switching to 3g network to make a call. As for the signal bars, never trust miui on that. Got to about phone -> and find a option where it shows imei, sim status, etc.
callmebutcher101 said:
It means that VoLTE (Voice over LTE) is not enabled or it is not available in your region. That is why it is switching to 3g network to make a call. As for the signal bars, never trust miui on that. Got to about phone -> and find a option where it shows imei, sim status, etc.
Click to expand...
Click to collapse
Yes, in my country VoLTE is not available, but I don't see that as an insufficiency, I use it only for data/internet 4G.
MIUI signal bars should "work" same for both 4G and 3G/2G, i think it is some other problem. Btw use it code *#*#4636#*#* (testing mode) and there i can manually set my network (WCDMA only, GSM only, LTE only, CDMA, TD-SCDMA/UMTS... and all variations of them). Usually LTE strength signal is "70-80dbm / 50-60asu". When I set to WCDMA only or GSM only it is ""100-110dbm / 1-10asu" and that's in the middle of the city (where I live). When I enter some Mall, stairs of building or hike on local mountains, when I want to make a call, the result is "CELLULAR NETWORK NOT AVAILABLE " :crying:
Does it can be antenna problem? But then, why 4G signal is far better than 3G? Does it have separate antennas??? I got no idea really what should be the problem about that
VkriLAB said:
Yes, in my country VoLTE is not available, but I don't see that as an insufficiency, I use it only for data/internet 4G.
MIUI signal bars should "work" same for both 4G and 3G/2G, i think it is some other problem. Btw use it code *#*#4636#*#* (testing mode) and there i can manually set my network (WCDMA only, GSM only, LTE only, CDMA, TD-SCDMA/UMTS... and all variations of them). Usually LTE strength signal is "70-80dbm / 50-60asu". When I set to WCDMA only or GSM only it is ""100-110dbm / 1-10asu" and that's in the middle of the city (where I live). When I enter some Mall, stairs of building or hike on local mountains, when I want to make a call, the result is "CELLULAR NETWORK NOT AVAILABLE " :crying:
Does it can be antenna problem? But then, why 4G signal is far better than 3G? Does it have separate antennas??? I got no idea really what should be the problem about that
Click to expand...
Click to collapse
Without VoLTE you cannot make a call on 4G network. The SIM will automatically switch to 3G/2G. It's the same across all phones, all carriers, and in any country.
noob.gamer said:
Without VoLTE you cannot make a call on 4G network. The SIM will automatically switch to 3G/2G. It's the same across all phones, all carriers, and in any country.
Click to expand...
Click to collapse
It is OK that. I know that. In fact, I GOT PROBLEM WITH 3G AND 2G SIGNAL STRENGTH. I mention 4G just to compare signals. I got 5 bars on 4G and 1-2 bars on 3G/2G on the same location. I have super fast internet thru 4G (50-100mbps), while when I set manually to 3G it didn't even connect data, furthermore, I cannot make a call (Cellular network not available). Obviously it is a strange problem. I'm not arguing about VoLTE or 4G...
Is it the same antenna for 2G, 3G and 4G signal? Should I replace it? I will repeat myself again, I can't get HOW CAN 4G signal be better than 3G/2G?!
I insert both SIM cards (with POCO F1 I use dual sim cards) to other phones (Xiaomi Mi4c, Alcatel Pixi 4, Lenovo A536...) and everything is OK with all of them. So, that means it is a POCO F1 problem.
VkriLAB said:
It is OK that. I know that. In fact, I GOT PROBLEM WITH 3G AND 2G SIGNAL STRENGTH. I mention 4G just to compare signals. I got 5 bars on 4G and 1-2 bars on 3G/2G on the same location. I have super fast internet thru 4G (50-100mbps), while when I set manually to 3G it didn't even connect data, furthermore, I cannot make a call (Cellular network not available). Obviously it is a strange problem. I'm not arguing about VoLTE or 4G...
Is it the same antenna for 2G, 3G and 4G signal? Should I replace it? I will repeat myself again, I can't get HOW CAN 4G signal be better than 3G/2G?!
I insert both SIM cards (with POCO F1 I use dual sim cards) to other phones (Xiaomi Mi4c, Alcatel Pixi 4, Lenovo A536...) and everything is OK with all of them. So, that means it is a POCO F1 problem.
Click to expand...
Click to collapse
Try changing slots. Or try a different carrier. The culprit could be your network provider. If the problem still persists go to any service center and get it checked. BTW it is actually strange to see that 3g/2g network is weaker than 4g. Usually it is the other way around.
Hi,
I have Asus zenfone max pro m2 phone with airtel sim. At my home, I get almost zero connectivity (both voice and data), all the time. It works perfectly fine in other places, but, I think it might not still be the best though, I do see some minor drops in connectivity every now and then, in other places too.
I placed the sim in another phone(redmi note 4g) at my home. It gets good voice and data connectivity (4g with decent speed). So I think the problem might not be with the sim. It should either be with the phone or something to do with airtel's cell towers.
I have attached the screenshots of phone information in both the cases (my phone with no connection and redmi note 4g which has good connection)
I think the reason might be either the phone has a bad radio/modem hardware or software. Or there might be problems with connecting to some cell towers. I think there are more than one cell tower nearby and somehow my phone is ending up not being connected to either(something to do with cell tower handoff!?). I sometimes see the phone getting connected to 4g/edge, but quickly drops. I do have JIO sim and it works fine. I have tried several things, both basic(switching sim cards, placing only one sim card, reset network, reboot etc etc.) and advanced(trying out different roms, locking bands with network signal guru), but no luck, anyone facing similar problem or has any solution? If its some kinda software problem, I can try flashing some software(kernel/modem?), I have my phone rooted.
Thanks in advance