Phone: S20 5G Snapdragon (SM-G981U1)
Software: US OneUI 3.0 Beta 2 (Build RP1A.200720.012.G981U1EU1ZTJG).
Carrier: Mint Mobile (T-Mobile US MVNO).
Here is what I noticed.
When I am driving, I use Android Auto and when I used Beta 1, for the most part I saw a 5G icon (where 5G is available) on the phone and on the display on the AA.
Now, after Beta 2 update, when the phone's screen is on, then the 5G icon is on the AA display as well as the phone. Once the display screen times out and goes dark (while the phone is still working) the AA display goes from 5G to LTE. As soon as I wake up the phone, back to the 5G.
This behavior is new and I did not see it in Beta 1. Can someone confirm this on T-Mobile US? Thanks in advance.
I am starting to wander if Beta 2 doing a more aggressive power savings than Beta 1? If that's the case, how and what do I disable to keep the 5G connection from "sliding" into LTE when the screen times out?
Same story here, same device with TMO. Beta 1 was 'golden' for me but the Beta 2 is something else. I failed to understand as to how the constant LTE to 5G signal switching could help in the battery saving department, also the native email app doesn't sync properly. Aside from that is it pretty fast and much cleaner than Android 10. Totally understand that it is a Beta which could bring potential issues and such then again common sense dictates that progress should be defined as going forward not backwards.
rayporsche said:
Same story here, same carrier, same device. Beta 1 was 'golden' for me but the Beta 2 is something else. I failed to understand as to how the constant LTE to 5G signal switching could help in the battery saving department, also the native email app doesn't sync properly. Aside from that is it pretty fast and much cleaner than Android 10. Totally understand that it is a Beta which could bring potential issues and such then again common sense dictates that progress should be defined as going forward not backwards.
Click to expand...
Click to collapse
Apparently the new iPhone 12 does the same, LTE must use less power than 5G, worse with the iPhone apparently it sticks to LTE the majority of the time, only switching to 5G for specific reasons
If you dial *#2263# the device will show the 'ServiceMode' screen where you can scroll down and select the [6]NR5g Band Preference (*), press it and it will open another screen where you could choose the [2] NR NSA ONLY or [3] NR SA ONLY among others then select [A] GO MAIN which will open another screen where you can select [9]-Apply band configuration which will give you the confirmation message; APPLY DONE, reboot next.
In essence [2] NR NSA ONLY would be 'non standalone 5G' and [3] NR SA ONLY would be a 'standalone 5G'. I've tried all that with the Beta 2 yet it doesn't seem to work as it should, at this point leaving the Beta altogether is beginning to make more sense.
Thanks for the tip. I put my phone into the 5G NR SA only mode and will see how that works in my neck of the woods. But I doubt that it will solve an underlying original complaint.
Related
I know on previous samsung devices I would press *#0011# and a menu would pop up displaying which band i was using. That is not working on my note 10 plus by att. Is there any way to check that?
Ya purchase signal check pro it will give you the band the dbm right on your taskbar it's a great app and works great.
Network Cell Info Lite
Best app and free
what I noticed about the note 10 plus is that it has LTE+. It only activates when I look something up strangely. It seems to be like a NAS or TURBO the phone has when something triggers any internet activity.
Please leave "Thanks" if this thread helped you.
_____________METHOD : 1________________
1. Open dialer and type : *#*#4636#*#*
2. Choose SIM1 or SIM2 to enter reception menu.
3. From dropdown menu ( LTE/UMTS auto (prl) as default ) change it to : GSM only
4. Wait until your cellular will reset and turn back on.
5. Less dBm amount = better signal strenght.
6. Test best signal for your network and share it in comments.
________________________________________
_____________METHOD : 2________________
1. Open SIM tray
2. Change your SIM car slot to Slot 2
3. Check if your signal strenght increased and share it in comments.
________________________________________
I'm waiting for my RN8Pro. Is there signal strength issue by default?
You can change this in network settings menu the normal people way and also allowing only GSM will relegate you to 2g network that has indeed better signal but will kill your internet speeds.
AlphaBravo said:
I'm waiting for my RN8Pro. Is there signal strength issue by default?
Click to expand...
Click to collapse
A little bit I think. At my house, with Redmi note 7 I have 4G+ ,with Redmi note 8 pro I don't have 4G+ so often and on places that I have it with Redmi note 7
How to increase the sharpness of incoming call voice? Most of the time, voice is muffled.
The incoming voice leaks from the back of the front speaker too
how to increase the volume of the headphone and speaker?
nakedowl said:
Please leave "Thanks" if this thread helped you.
_____________METHOD : 1________________
1. Open dialer and type : *#*#4636#*#*
2. Choose SIM1 or SIM2 to enter reception menu.
3. From dropdown menu ( LTE/UMTS auto (prl) as default ) change it to : GSM only
4. Wait until your cellular will reset and turn back on.
5. Less dBm amount = better signal strenght.
6. Test best signal for your network and share it in comments.
________________________________________
_____________METHOD : 2________________
1. Open SIM tray
2. Change your SIM car slot to Slot 2
3. Check if your signal strenght increased and share it in comments.
________________________________________
Click to expand...
Click to collapse
I try this.. when I change LTE/UMTS auto to GSM only I loose 4G and have only H+ that is slower than 4G.. and the signal is the same.. I try it on one spot for half an hour
2G has almost everywhere coverage and it's too old technology to use.
When UE is registered to 2G network it can't handle voice+data transmission simultanously (most networks does not support DTM technology).
Also 2G is not designed to used AMR-WB voice codec, only simple AMR which sounds like **** to be honest.
So this tutorial is pointless, sacrifice better data speed for rubbish voice and ultra slow data speed
needmoney said:
2G has almost everywhere coverage and it's too old technology to use.
When UE is registered to 2G network it can't handle voice+data transmission simultanously (most networks does not support DTM technology).
Hi,
Also 2G is not designed to used AMR-WB voice codec, only simple AMR which sounds like **** to be honest.
So this tutorial is pointless, sacrifice better data speed for rubbish voice and ultra slow data speed
Click to expand...
Click to collapse
Redmi NOte 8 Pro has big problems with LTE 4G + tape management. The phone does not keep the 4G + it switches and stays in 4G all the time. It's a modem management problem that does not support the double-banding needed for 4G +.
Bests Regards
Xiaomi Redmi Note 8 Pro model M1906G7I (Global) doesn't connect to 4G LTE
Hi there! My problem is even worse than this you are sharing with us. I bought a Xiaomi Redmi Note 8 Pro model M1906G7I (Global). However, there is a lie about it, the specifications indicate that about networks it works for the following 4G LTE bands: B1/B2/B3/B4/B5/B7/B8/B20/B28, but it is not true as it only works for B1/B3/B5/B8/B40/B41 (I found it out by entering to engineer mode *#*#3646633#*#*). Therefore, in my case I can only connect to 3G because my service carrier uses B4 (1700 mhz, 2100 mhz) for 4G LTE. Besides that, everything is fine with the phone. What I am trying to find out is whether it is possible to activate or unlock the B4 band so that it can connect to 4G LTE. If anybody knows about a solution to this issue, I would appreciate the assistance to this matter.
Hi,
You don't have the global version M1906G7G
Global : B1/B2/B3/B4/B5/B7/B8/B20/B28/B38/B40
China : B1/B3/B5/B8/B34/B38/B39/B40/B41
India : B1/B3/B5/B8/B40/B41
You must get a refund if you bought the global version, and change to the M1906G7G to be able to use B4 .
I just tried this on my note 8t. Switched to GSM only and immediately even before restarting the phone, went from 1 bar to full bars. Speed tests show much more bandwidth available (now at 11.8mbps/3.1mbps). Sweet. First post I found after a search and first solution just flat out worked. Still think I should be getting higher speeds (I don't think I have ever really cared about the mobile speed because I am almost always on wifi, and do not recall ever doing a speed test, but at least it's better than it was now.
I've tried everything, so hopefully someone can shine some light into this issue.
I bought a new (unused but from a 3rd party) Samsung Galaxy A50 (A505U) Verizon branded and unlocked. Got a sim card from Visible and went to get it connected. Nothing. WiFi works, everything works, but no cell service.
Here's what I've done (some multiple times)
- reset everything to include network settings, hard reset, etc
- removing the sim, resetting, putting the sim back in. I always get a notification saying the sim card is removed and it goes away when I put the sim back in, so it is recognizing a sim card is in there
- switched sims with another Visible phone/sim and nothing. Both sims worked on other phone but neither worked on this phone
- tried getting into the hidden menus but none of them worked
- talked to Visible tech support which upgraded the issue to the highest level and concluded it's the phone
- Visible believes it's the APN settings but I cannot edit current APNs nor add new ones (grayed out)
- manually add networks, I can see Visible, TMobile, ATT, and some weird numbers, but when I try to connect to Visible it says cannot register on the network, other networks say the sim is not setup for them
- sometimes I get the icon that shows all bars but they're grayed out, sometimes it shows 3-4 bars lit up, sometimes even shows a 4G icon, but mostly the grayed out bars
- sent the phone to Samsung, they tested it and found no faults, guess the hardware is good, ruled that out.
- got into dev options but I'm aware the OEM unlock is not on option on the A505U, not sure if I can change anything else.
I'm out of options. Any other ideas? I think if I can either get into the hidden menus I'll be able to diagnose it better, or if I can somehow change the APN settings I'll be able to set it up. Visible tech support thinks it's the APN, which makes sense to me, but I can't change them.
Any help is greatly appreciated.
I was able to get into the CSC change function, there's not many there, but would changing the CSC help? If so, which should I go to?
I've had a similar issue. Was working fine until the Android 10 update arrived. Since then, it won't work with my total wireless sim card. Tried 3 different sim cards on it, but nothing. Can't add it do anything with the APN, and getting into the phone info hidden menu doesn't help any. I suspect it's a bug in the new firmware or something like that. Works fine with a Verizon SIM though.
Update: Verizon SIM no longer connects to phone. Still works with LTE data. It seems that the CDMA radio quit working with the update to Android 10. Must have been collecting to the Verizon network with VoLTE until it updated the provisioning or something.
So, I finally figured out a workaround for mine that was able to get both data and voice networks to connect while using total wireless, which is an MVNO on the Verizon network. I pretty much narrowed it down to being an issue with the modem not working with CDMA. What I did was download the last Android 9 firmware and flashed just the modem (file starts with CP_) using Odin. After that, I rebooted it and voila! It connected.
Just thought i would give my experience as i just delt with this. i got my 10 update this morning nd let it update and apon a reboot i lost all mobile connection, a signal bar would show for a few seconds looking like it was trying to lock in a signal and it would go back to the ⌀ symbol. i tried flashing the android 9 modem from 2 different updates and neither fixed it. i just decided to order a new phone as i feel its time anyways. my next attempt will be to flash android 9 back using odin then just throw this phone up on craigslist
edit: odin successfully flashed back to android 9 and signal now works again. so if anyone has this issue you can try the method above of just flashing the modem and if that doesnt work you can go back to 9 and restore functionality of verizon mvno's
darkmage1991 said:
Just thought i would give my experience as i just delt with this. i got my 10 update this morning nd let it update and apon a reboot i lost all mobile connection, a signal bar would show for a few seconds looking like it was trying to lock in a signal and it would go back to the ⌀ symbol.
Click to expand...
Click to collapse
Out of curiosity, which carrier are you using?
TJay99 said:
Out of curiosity, which carrier are you using?
Click to expand...
Click to collapse
Visible
samsung a50 not connecting to VZW towers (red pocket)
My phone is doing the exact same thing and while I can appreciate how you resolved the issue it doesn't make much sense to me.
I use Red Pocket for my network. (Which uses Verizon towers - I use the CDMA Sim)
Before this major update to 10 my phone worked flawlessly. Now it won't connect to the network much like you guys have stated in this thread. Mine will connect intermittently for like 3 or 4 min tops and then get kicked off the tower and will actually not show any bars (Circle with a line through it) to show no service for about 10 or so minutes then restart the whole process.
I also have a work phone (2nd phone) that is directly tied to the verizon towers on the verizon network. If I take the sim out of that phone and put it in my samsung a50 the samsung a50 is happy and can make phone calls, send texts, and stays on the vzw towers with no disconnects.
If I take my red pocket sim card and place it in my work phone that phone also works just fine - send messages, make phone calls, and stays on the vzw towers with no disconnects. (work phone = iphoneXR - it's free, sue me)
Even though reverting the modem obviously fixes your issue I do not think that is the actual problem. It also doesn't seem that a third party carrier is being randomly booted off the towers, it seems to be a glitch with third party carriers using third party sims utilizing this new android 10 software that VZW towers do not like.
Which obviously points to an issue with Samsung's latest software not being compatible with third party carriers.
I can't seem to contact Samsung in a direct manner to resolve this issue as they want me to take it to a third party store to have it looked at. I spent 2 and half hours with tech support from red pocket and they came to the conclusion that VZW was doing "upgrades/maintenance" to their towers in my area. (whatever that means.
Any ideas on how I can contact Samsung directly to detail this issue to them? I really do not want to have to root my phone in order to use odin to set my modem back to version 9 as I'm hearing that doing so voids all kinds of implied warranties with the phone and it's only 6 months old.
Appreciate any help that you guys might be able to steer me towards.
Thanks.
Before this major update to 10 my phone worked flawlessly- They Told you the answer, Odin # 9 or if its under warranty take it back Good luck.
My phone (SM-A505U) wasn't even working on visible before android 10.
See my post at the end of this thread: https://forum.xda-developers.com/ga...official-firmware-t3955727/page2#post83845605
I have that problem too. Where I can download v9. I got the Odin.
Hi everyone,
I have a problem where the phone will display 5G but not receive or send any data. It seems to freeze up because instructing the phone to switch to LTE doesn't work, resetting APN doesn't do anything, and going to airplane mode and back doesn't fix anything either. The only fix seems to be restarting the phone.
Does anyone else have these issues? I'm probably going to just disable 5G for the time being since it doesn't seem to provide any benefit to me right now... (Los Angeles)
Thank you!
Note: I had a t-mobile S20, and now am using a new unlocked S20. Same issue.
Yep happens on my Samsung Factory unlocked S20 on T-Mobile 5G. In the service menu disabling 5G forces it on LTE and issue is gone. Looks like theres tons of reddit posts about it too. Wonder if its affecting other 5G devices as well
hyelton said:
Yep happens on my Samsung Factory unlocked S20 on T-Mobile 5G. In the service menu disabling 5G forces it on LTE and issue is gone. Looks like theres tons of reddit posts about it too. Wonder if its affecting other 5G devices as well
Click to expand...
Click to collapse
Thanks for the confirmation! Hopefully some updates fix this very soon. I'm sure Samsung and carriers would be aware of something this big...
Same here. Changing to lte from the connection settings does work but takes a while to actually change. About a minute or 2. Really sucks cause other than the no data it does full bars of 5g
---------- Post added at 05:10 AM ---------- Previous post was at 05:09 AM ----------
hyelton said:
Yep happens on my Samsung Factory unlocked S20 on T-Mobile 5G. In the service menu disabling 5G forces it on LTE and issue is gone. Looks like theres tons of reddit posts about it too. Wonder if its affecting other 5G devices as well
Click to expand...
Click to collapse
How do you access the service menu?
Open the phone app, tap keypad and enter *#0*#
sublimaze said:
Open the phone app, tap keypad and enter *#0*#
Click to expand...
Click to collapse
This menu seems to be for testing... which icon do we have to press in order to force toggling back to LTE?
I'm shocked that we're almost at the end of July - almost 5 months after the phone released, and 5G is completely unusable still. Are others still having this issue??? I re-enabled 5G this morning to determine whether it would work now. I honestly expected it to be fine and perhaps freeze up later in the day, but it immediately died out when I did a speed test. 4 Mbps down and then 0 mbps up. Unresponsive for a couple minutes after that - wouldn't even go back to LTE when 5G was disabled.
Edit: it's worth mentioning that this is also a new device, and this time I went for the unlocked variant rather than the T-mobile device. Both devices' connections freeze.
i had similar issues here in the UK on vodafone - switching to 5G and no data was coming thru but switching to 4G and it was working fine
i had 5g switched off for months but turned on back last week, and now it works - although 4g speeds seem to be faster than 5g speeds
not sure if its the phone or the network - could be the phone as i tried the same sim into an oppo f2 pro and i was getting much better speeds -
just adds to the list of disappointments this phone has been - i really hope they fix iit but hopes are disappearing
Hello! So I got the Pixel 6 Pro and I am coming from Galaxy S20U (Owned Pixel 1/2/3/5)
So on my S20 I can change NR/LTE bands as much as I like without root by using an app or the hidden menu *#2236#
Where I work all day its all concrete walls, so me locking LTE Bands its a must.
I can not do that on my google Pixel 6 PRO and yes I tried *#4636# but those options do not work with me because you can not lock bands.
I am ok If I need to root my 6Pro in order to do this, Will Network Guru do this once rooted? I am willing to include reward $ for whoever helps me with this.
Thank You
I'm sad to say that Network Guru simply won't work because Pixel 6, Pixel 6 Pro uses Shannon Modem for 5G, which is an Exynos modem (if i'm not wrong) and Network Signal Guru requires Qualcomm Modem to work.
**edit: typo**
Under settings__internet__gear wheel next to your carrier and scroll done to preferred network type. Unless you don't have that option.
I'm still trying to figure out diag modes for this phone. I can get the modem and serial devices to show up. Per my conversations with cstark:
resetprop ro.bootmode usbradio
resetprop ro.build.type userdebug
setprop sys.usb.config acm,dm,adb
setprop persist.vendor.usb.usbradio.config dm
Revert:
setprop vendor.modem.logging.shannon_logging false
setprop persist.vendor.modem.logging.shannon_app false
Click to expand...
Click to collapse
Everything seems to be controlled by /vendor/bin/modem_logging_control and /vendor/bin/dmd.
Regular START/STOP calls to modem_logging_config from root shell can yield usable logs. We can also get the apps started in special SHANNON_DM or SHANNON_APP modes, but no idea what to do with them.
For example:
modem_logging_control START
modem_logging_control SHANNON_APP
modem_logging_control STOP
Click to expand...
Click to collapse
Logs saved to /data/vendor/slog/.
The Shannon DM version floating around is too old and I haven't gotten a decent scat setup. Airscreen might work but Network Signal Guru doesn't. No tools for this phone are good at the moment.
And that's the extent of our knowledge at the moment...
mrgwin said:
I'm sad to say that Network Guru simply won't work because Pixel 6, Pixel 6 Pro uses Shannon Modem for 5G, which is an Exynos modem (if i'm not wrong) and Network Signal Guru requires Qualcomm Modem to work.
**edit: typo**
Click to expand...
Click to collapse
Thank you for your answer. This is why Im pretty much stuck :/
wolfeyes30 said:
Under settings__internet__gear wheel next to your carrier and scroll done to preferred network type. Unless you don't have that option.
Click to expand...
Click to collapse
Thank you for your answer. Unfortunately I am missing that option
LLStarks said:
I'm still trying to figure out diag modes for this phone. I can get the modem and serial devices to show up. Per my conversations with cstark:
Everything seems to be controlled by /vendor/bin/modem_logging_control and /vendor/bin/dmd.
Regular START/STOP calls to modem_logging_config from root shell can yield usable logs. We can also get the apps started in special SHANNON_DM or SHANNON_APP modes, but no idea what to do with them.
For example:
Logs saved to /data/vendor/slog/.
The Shannon DM version floating around is too old and I haven't gotten a decent scat setup. Airscreen might work but Network Signal Guru doesn't. No tools for this phone are good at the moment.
And that's the extent of our knowledge at the moment...
Click to expand...
Click to collapse
Thank you, I will try to be checking on this if decide not to return the phone. Is Airscreen a Magisk Module?
No, it's a desktop app. There is no band locking.
Can someone tell me the benefits of this mod? Genuinely interested.
Lower frequencies penetrate walls and concrete better than higher frequencies in the spectrum, at the cost of speed.
Locking a 5G/LTE band helps save battery life because it prevents constant hunting for a better signal between bands.
You can try your luck with 'Shortcut Master' app on Google Play. Once opened click on show all apps -> Phone services -> scroll until the bottom and click on band or radioinfo and click on Launch. Then you can change the band and frequency as per your liking.
No wifi at work?
A lot of workplaces have strict firewalls and network policies in place so it's understandable to use your own network connection for non-corporate usage
Utini said:
No wifi at work?
Click to expand...
Click to collapse
No, they don't even allow personal computers
tids2k said:
You can try your luck with 'Shortcut Master' app on Google Play. Once opened click on show all apps -> Phone services -> scroll until the bottom and click on band or radioinfo and click on Launch. Then you can change the band and frequency as per your liking.
Click to expand...
Click to collapse
With this method let's say I choose class 9, it will remain locked?
I believe this is a WCDMA band selection and will have no effect on LTE/5G, am I wrong?
fourpsk said:
I believe this is a WCDMA band selection and will have no effect on LTE/5G, am I wrong?
Click to expand...
Click to collapse
Not sure but I'm really frustrated that I don't get the option to at le last turn off 5G in any way :/
dreadsoldier_99 said:
Not sure but I'm really frustrated that I don't get the option to at le last turn off 5G in any way :/
Click to expand...
Click to collapse
I think you can simply turn off 5G from the settings menu. (You can also set Prefferd Network type to LTEOnly from Radio info... *#*#4636*#*#)
The sad thing is that you can't fix the band in Network Signal Guru (or any other APP).
This may be difficult to do unless Google provides a development tool that supports Shannon modems.
The above looks like something different, aiming more at 'by region or country' to me. Not the traditional band selection found in other devices. It'd be nice to find out if we can systematically program these to hunt on certain LTE/5G bands. I am on a tmobile migrated sprint plan on my p6p. It works great except for that fact that where I live band 26 is garbage. The only solution realy is to find that sweet spot when it swaps to 25 or lock it into the device. So would be nice if the google momos release it, you know, in the spirit of open source, like they initially set out to do so many years ago when android started.
good news everyone. version 4.0.4 of Network Signal Guru has band locking for the pixel 6