Database Users

[HOW-TO] Disable/Enable LTE/3G/4G ETC

No root required*
My phone kept switching to edge because the wcdma signal in my area is very low but 3 bars of edge is worse than 1 bar of hsdpa+ (no lte in enterprise al) so I choose wcdma only and I always have signal. You can set preferences or choose certain signals only but be aware if you change to a specific signal only and it's not there you will loose service... If you ever need to reset the settings and can't remember the code removing the sim card and reinstalling it resets back to default.
Here's where I found this I take no credit but I can confirm it works on the One.
http://forum.xda-developers.com/showthread.php?t=1636345
Edit: I ment to post this in the at&t forum for the one. I believe it's only at&t that disables the option from the menu but not positive. If this is not helpfull please remove it sorry!

[BUG][GT-I9505G] LTE disabled

So I've confirmed today that there is in fact an LTE issue with the Galaxy S4 Google Play Edition, and thankfully, it's software based. Hopefully, Google and/or Samsung implement a fix in short order. In the meantime, here's the cause (so that you can prevent the issue), and here's the workaround (so that you can correct the issue if you're affected).
Background:
Comparing the Google Play Edition to the Touchwiz Edition, there is a setting that is slightly different on both phones. If you go to Settings --> Wireless & Networks --> More --> Mobile Networks --> , you will see a setting; either "Use only 2G networks/saves battery (GPE)," or "Network Mode (TW)."
The Network Mode on Touchwiz allows you to toggle between available network modes based on carrier, usually 3 individual settings and a full Automatic setting. The 2G Networks setting on the Google Play Edition is the cause for concern here. It's directly ported from the Nexus 4, and here's where the problem lies.
Cause:
While both devices have numerous hidden network modes, the toggle only allows for you to switch between two modes; GSM Only, and WCDMA Preferred. GSM Only occurs when the box is ticked. This sets you on Edge-only for battery savings. WCDMA preferred tells the phone to look for GSM/UMTS (Edge/3G/H), but to prefer the latter if both are available, even if the latter has a weaker signal. Did you see LTE in the equation? If you noticed that it's absent, here's why.
The S4 has an additional mode; LTE/GSM (Auto PERL). This sells the phone to switch between LTE/H/3G/Edge based on signal strength and T-Mobile's/AT&T's APN settings and roaming list. The S4 GPE comes with this mode on by default. If you tick the 2G box, you'll go to Edge only. If you untick the box, instead of going back to LTE/GSM, you are sent to WCDMA Preferred. Now, you're stuck between 2G/3G/H, or 2G only. LTE is gone. Nice oversight by Google/Samsung
The "Fix":
Because this is an issue with the firmware, there is no permanent fix. However, there are easy user-facing applications that will allow you to toggle LTE back on. The one I'm using is LTE Setting (Google Play Link). From the main page, go down about 2/3s of the way and you'll see a drop-down menu. Select "LTE/GSM (Auto PERL)" to restore LTE. Now, the next time that you set your phone to 2G Only for the sake of battery savings, you'll need to use this app again to restore LTE compatibility.
I've enclosed two pictures. The first is the setting as it appears in the Google Play Edition. The second is as it appears in a Touchwiz model, and why the Touchwiz variant does not have this problem.

i had this problem when i have flashed 3 various roms so i have to flash back a rooted stock rom which you can find in this forum (in my case XXUBMGA). after flashing i checked Settings --> More (under wireless) -->Mobile Networks and there shoud be 4 choices 1. LTE/WCDMA/GSM (auto connect) 2. WCDMA/GSM (auto connect) 3. WCDMA only and 4. GSM only. i checked no.1 to see if it worked (after rebooting). then there was no 4G connection on the status bar, so i begin to search for the answer in this forum also. here's a list of what i did to solve my problem.
1. i asked my carrier for an LTE capable SIM (micro SIM)
2. i see to it that there is an LTE coverage in my area for testing
3. LTE is activated in my prepaid account which is separate from internet access.
4. (optional) in settings/more/mobile networks/networks operators i selected manual because it drained my load when my network is not available when connection to LTE coverage of another network.
5. asked from carrier the correct APN
of all the listed steps i made above, it was the SIM card that was at fault, because my carrier gave me a normal sim but was just cut to a micro sim so i insist to have a pre manufactured micro sim. you can google for answers but i don't think this is a bug. i have read plenty of lte issues during my search and all point to coverage, SIM card and requesting the carrier for an LTE activation on your account.
hope this helps

I've edited the original post for clarity. I apologize for any confusion that I have caused.

Bug has been submitted to and acknowledged by Google. It's evident in the latest 4.3 leak, so no idea if the fix makes it into the final push, or a subsequent update.

Bug has been fixed as of last night's OTA to 4.3.

Enable WiFi Calling & VoLTE on T-Mobile US onOP 5 w Original OxygenOS 4.5.5 Firmware

Enable WiFi Calling & VoLTE on T-Mobile US onOP 5 w Original OxygenOS 4.5.5 Firmware
Hi Everyone,
Just wanted to let you know that I was able to enable Wi-Fi Calling and VoLTE on T-Mobile US on OP 5 with the original OxygenOS 4.5.5 firmware by doing the following:
1.) Ignore for a moment that you are already on T-Mobile. This was preselected for you automatically by the virtue of inserting a T-Mobile SIM card.
2.) Go to settings and manually search for/select mobile network. Let the phone search for a mobile network for you.
3.) You will get T-Mobile to appear but the only connection choices you will be given are 2G, 3G and 4G. There will be no choice to select 4GLTE.
4.) Ignore the fact in 3.) and proceed to select the "plain" 4G option
5.) Go back to SIM & Network Settings. The preferred network type for you will appear to be 2G/3G/4G (automatic).
6.) The WiFi Calling and VoLTE options now appear on right under the Preferred network type. Select WiFi calling/or VoLTE
7.) Switch to WiFi. You will get a notification on the top right bar that you are on WiFi/VoLTE calling.
8.) Try it out - it works
9.) Now turn off WiFi. This will switch you to your T-Mobile network.
7.) Check your notification bar on top, it will show that you are on 4G LTE.
8.) Test your 4GLTE connection speed with a program like speedtest.net.
9.) Mine was ~ 55 mbps download and 12.4 Mbps upload - definitely 4GLTE speeds.
10.) Enjoy
Dr. P

You don't need to go thru any dance on this...my phone has always done this with out changing any thing... T-Mobile in Atlanta..

On my OP 5, VoLTE and VoWifi did work instantly.

All of this was enabled without any effort for me on TMobile.
I am curious though, are you saying that 4G (by itself) is an option for you on preferred network type?

Thailand carrier "AIS" Follow step notwork!!.
Sent from my ONEPLUS A5000 using Tapatalk

Many retail/unlock mobiles have "Wifi Calling" function but not any menu entry to enable , The APP can check the hidden function and enable it if can use.
https://play.google.com/store/apps/details?id=com.widget7.wifi.calling

whelmar said:
You don't need to go thru any dance on this...my phone has always done this with out changing any thing... T-Mobile in Atlanta..
Click to expand...
Click to collapse
Agreed, was immediately able to run on both wifi and T-Mobile​ LTE once the SIM card was inserted.
Sent from my ONEPLUS A5000 using Tapatalk

I followed the steps, but VOLte and WiFi calling even is not working. Furthermore the options are not displayed.
T-Mobile Germany.
My old Samsung S7 EDGE working fine with VOLte and WiFi calling at the same SIM card.
Is there any fix for this on my OP5?

not receiving incoming calls...

just got the phone yesterday and updated it to the P beta. everything works amazingly well for a beta in my opinion, BUT i cant receive calls. outgoing calls, texts, web and apps are just fine.
spent almost 2 hours at tmobile flipping all the settings around and no luck. any ideas would be appreciated.

Same issue here bro...Incoming don't ring but I get voicemail notifications.... Really annoying, even if it is a DP.

Turns out the beta doesn't play well with the essential LTE. Switch to 3g and calls will come through. Hopefully it doesn't take long to find a work around for it

I believe the people having this issue have volte enabled...try and disable volte (it's broken anyway and more than likely why calls won't ring through) and see if that works

Got same issue... My experience was that I could solve the problem with reboot.
Issue came after playing on settings for mobile network.
Is meaning, when you do this you have to reboot afterwards otherwise you can't receive calls
Try it.

vergilbt said:
Got same issue... My experience was that I could solve the problem with reboot.
Issue came after playing on settings for mobile network.
Is meaning, when you do this you have to reboot afterwards otherwise you can't receive calls
Try it.
Click to expand...
Click to collapse
Tried rebooting multiple times while changing settings around. The only way I can get the calls to come through is by going without LTE completely.

knotjeff said:
Tried rebooting multiple times while changing settings around. The only way I can get the calls to come through is by going without LTE completely.
Click to expand...
Click to collapse
Settings/network settings/mobile network/advanced/enhanced LTE?

I had the same issue and to fix mine I just enabled Wifi Calling.
When on wifi I didn't get a call, just missed call notification. After enabling wifi calling, it comes through without issue.
I tested calling off wifi and on wifi and all calls come through good now.
This could be similar, so you guys might want to look at that also.
Good luck!

Heard from a few that this was solved by going into phone app settings -> calls -> calling accounts, then turning on "receive incoming calls". Seems it's disabled to save battery? Can't confirm as I just flashed to try it out and then went back to 8.1 because I like themes too much. Lol.

I'm on Sprint and was never able to make or receive calls regardless of Network settings in the easily accessible options menu.
The following fixed my issue. You can access this menu without downloading an app but I forget how so it's easier to just download the free app https://play.google.com/store/apps/details?id=com.xsquarestudio.forcelte
I had my network mode set to LTE/CDMA when first using this app, and somewhere in the middle I changed it to CDMA but I'm not sure how much that impacted the actual fix.
These were my steps. I'm not responsible for any damage this may cause to your device as I'm not sure if messing with these settings is foolproof or not.
First, opened previously linked app "Force LTE" then under "Set Preferred Network Type" I changed to CDMA only. Enabled/disabled airplane mode. This seemed to do nothing as LTE was still showing in statusbar.
I then chose CDMA auto (PRL), airplane mode on/off, didn't seem to do much either. LTE still showed in statusbar and couldn't make calls. Also "Voice Network Type" showed "Emergency Calls only" inside the app.
I then chose the 3 dot menu and chose "select radio band". I changed that to United States, without resolving problem. Then selected "Cellular 800" and this may have solved the problem, but I continued on and selected PCS, fiddled with some settings in Phones settings menu. Was finally able to receive calls and my signal indicator showed 3G. In app Voice Network Type was listed as 1xRtt. I decided to select radio band once more and chose Class 10.
Calls were still functioning fine. So I went into Main settings menu and changed mobile network from CDMA to LTE/CDMA. LTE kicked in and calls still work!
Again, these settings may only work for Sprint hence the PCS Network option, and I believe Sprint may utilize the 800mhz frequency. The app might show you different options depending on your carrier. I don't know.
Anyway, fully functioning! Woohoo!!

Forgetfull said:
Settings/network settings/mobile network/advanced/enhanced LTE?
Click to expand...
Click to collapse
I don't have anything in my settings that says "enhanced LTE" .
Tried using the 4g/LTE and the LTE only options. Neither would let calls through.

I have this problem using the Essential PH-1 with Android 9 Pie in South Korea on the KT network. It should be fully compatible, according to radio specifications, however it only works when I change the following setting:
Settings | Network & Internet | Mobile network | Advanced | Preferred network type | 3G
This is not ideal, since it makes the Internet slow, but at least I can make/receive voice calls. I submitted a support ticket to Essential requesting their official help (I'm well within warranty).

I had the same issue when I use my Att prepaid plan. The problem is caused by wrong network type, you can send text and browse internet, because they use the different channel. My PH-1 wrongly recognized the sim as CDMA/LTE mode, just switch it to 4G/LTE, it will be work. Go to Settings, then search "wi-fi calling", point "advanced" then you can see an opinion "Preferred network type" if you are ATT or T-mobile user, and your preferred network type is "LTE/CDMA“ then your phone cannot make call. Switch it to "4G/LTE", you phone will be work. BTW, Verzion uses CDMA, so if you are Verzion user, CDMA/LTE will work for you phone.

5g option disappeared in Android 12. I'm using Oneplus 8T

Any help, please?

Settings - Mobile Network - Right above the Mobile Data Toggle will have a small box (For me it says T-Mobile and my phone number, it's a small slightly darker white box) - Press that. This section is called Sim Info and Settings. This is where they moved Preferred Network Type, APN settings, Roaming, etc. All it did when you updated to 12 was it probably toggled 4G/LTE and turned off 5G. I keep mine on 5G On.
This should solve your issue