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.
I can't connect my H850 to wifi band 13 after a random amount of time in a no mobile signal area. Seems immediate after a reboot, or drops band 13 wifi after a random amount of time with no reboot, SIM card remains in phone. When the problem is happening I get the message about wifi issue when toggling wifi off then on "Cannot search for all wifi networks. Check SIM card or mobile network". All other wifi bands are fine.
Phone purchased in the UK, but it's been back twice for repair, and each time comes back with new issue. I'm not sure if this happens on EU stock LG G5 that haven't had lots of part replaced. I think it's something to do with LG phones assuming they're in the US (where channel 13 is banned) unless a connected SIM tells them otherwise. Seems a big problem with LG phones if you need to connect to EU wifi in no signal areas. There's no option to set wifi regulatory domain in advanced wifi settings.
Is there any way of fixing this without rooting?
Sent from my LG-H860 using XDA Free mobile app
Unfortunately i had found the post after a long time. You will most probably won't have this phone anymore... I have the same LG and it just lately started the same problem to me too, so i would be glad if anyone had answer
Had this problem also. I've switched off channel 13 in router.
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 have updated just now to MIUI 10.1.2.0 Stable but still am not able to detect 5GHz on Wifi. This is really annoying. I have tried resetting network settings, replacing SIM and finally also factory reset. Nothing seems to work. Please suggest a way out guys....
The weird issue I have is, when I reboot the phone it recognizes the 5GH network and connects to it with no issues. However, when I go out of range of the 5GHz network AND come back, the phone does not recognize any 5GHz networks. I reported the bug on the official Mi website 2 months ago and I have not heard anything from them. I'm on MIUI 10.0.4.0.
DV8_MKD said:
The weird issue I have is, when I reboot the phone it recognizes the 5GH network and connects to it with no issues. However, when I go out of range of the 5GHz network AND come back, the phone does not recognize any 5GHz networks. I reported the bug on the official Mi website 2 months ago and I have not heard anything from them. I'm on MIUI 10.0.4.0.
Click to expand...
Click to collapse
That's much weirder! Did you not try to visit there service centre?
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