[Guide] Boost Cell Signal to Max & Force CA/Volte/Vowifi if avail from Stock ROM

Search This thread

Jay07jay

Senior Member
Jan 26, 2014
108
20
Knoxville
Turn on airplane mode, switch WiFi on and attempt to place a call. Phone should display vowifi and place your call just fine if WiFi calling is indeed active. Might need to go into sim settings and be sure WiFi calling is turned on.

Just tried that and a message popped up "to place a call turn off airplane mode"
 

Ducter

Senior Member
Jan 10, 2009
1,901
1,228
Just tried that and a message popped up "to place a call turn off airplane mode"

If WiFi calling is selected in sim settings, settings> WiFi & internet> sim & network> sim settings it should place the call over WiFi. At least that's what happens on my phone but I use TMobile where WiFi calling is native.
 

Attachments

  • Screenshot_20190526-080755.jpg
    Screenshot_20190526-080755.jpg
    195.1 KB · Views: 1,370

Jay07jay

Senior Member
Jan 26, 2014
108
20
Knoxville
If WiFi calling is selected in sim settings, settings> WiFi & internet> sim & network> sim settings it should place the call over WiFi. At least that's what happens on my phone but I use TMobile where WiFi calling is native.

Same setup not sure if it's because of me being on the at&t network but I still get volte so I'm happy with that
 

Attachments

  • Screenshot_20190526-081859.jpg
    Screenshot_20190526-081859.jpg
    69.7 KB · Views: 1,076
  • Screenshot_20190526-081728.png
    Screenshot_20190526-081728.png
    105.9 KB · Views: 1,074
  • Like
Reactions: Ducter

gigilie

Senior Member
Feb 6, 2011
772
1,103
MN
Can we replicate?

Who knows the easiest way to go about tracking and replicating the changes made to embed them into a magisk, script or kernel so we can achieve these same modem enhancements on custom ROMs easily?

N those still in doubt these changes help or work I can tell you without a doubt that if your using a stock OOS Rom and using TMobile as your provider that these changes will not eat up your battery any more than normal and altho depending on your location and towers speed availability this can and will increase your overall speed and your ability to maintain a solid connection in low signal areas! It forces carrier aggration meaning it makes the modem in your phone connect multiple times over varied frequencies to achieve the highest level of connection. Like your old 4g phone x 3 up to 6 put together. So your speeds can be 600% improved. Of course the phone is technically supposed to do this on its own which it can occasionally but only in absolutely optimal situations. So not when you really need it too. Lol. So altho it might not work on carriers without this tech or overseas if u live in North America and use TMobile this will drastically help your phone whether you instantly notice it or not trust me it does
 

tusker559

Member
Jun 2, 2016
42
14
Just chiming in to say this worked for me. I ran a few speed tests and I got the best speeds with VT Switch off. Only gained a little more than 1mbps download (11.9 to 13.3 mbps) but it doubled my upload (5.44 to 12.3).
 
Last edited:
  • Like
Reactions: gigilie

Pain-N-Panic

Senior Member
Mar 24, 2013
1,633
535
Droid
Running Lineage. How do I install the stock oos dialer? Thanks

Seems kind of off topic....does the lineage dialer not allow you to input the codes in the OP to get to the menu screens?

Regardless...I'm sure if you just Google stock "OOS dialer apk" you'll find an APK on the web, then just place in the correct system directory and set proper permissions.
 

cyclejoc

Member
Jan 4, 2011
43
2
Atlanta
amazing upload speed

This little trick will change your measly 1 bar signal to nearly max bars and give you a solid consistent signal in places you normally would hardly have a connection. At least it did for me.

This goes a bit beyond enabling VoLTE from your SIM Card Network settings which if you haven't done you should enable before trying this... Of course you may not have the same results I had. I found it works best from Stock ROM no root needed I'm currently on 9.0.12 but tried it on 9.0.11 and Beta 5.

Like any mod you should make a backup now and proceed with caution. (By caution I mean don't deviate from instructions goofing around in any engineering mode is never wise)

You should try check your internet speed now (Google internet speed! And take note of it then run the same test to see if your able to improve at all.


Step 1: Optional step but for best results open dialer and type: *#*#4636#*#* From this Testing Menu select Phone Information. Once in phone info select LTE/UMTS auto (prl) for preferred Network type. Then scroll down a bit and make sure VoLTE is switched on. Exit the phone info screen.

Step 2: Open Dialer again and type: *#800#
A Warning Message to Engineering Mode will popup. Press Enter.

Step 3: Click on the first option Called OnePlusLogKit
Once in the LogKit scroll down until you see the menu called: FunctionSwitch now click and select it.

Step 4: There's 3 checkboxes of interest in this menu... VoLTE Switch, VoWifi Switch and VT Switch. I enable all three but some may have better luck not enabling VT Switch. After enabling each option it'll try and reboot your phone just say no until you have all you want enabled.


Now reboot and profit.

I can tell you without a doubt that if your using a stock OOS Rom and using TMobile as your provider that these changes will not eat up your battery any more than normal and altho depending on your location and towers speed availability this can and will increase your overall speed and your ability to maintain a solid connection in low signal areas! It forces carrier aggration meaning it makes the modem in your phone connect multiple times over varied frequencies to achieve the highest level of connection. Like your old 4g phone x 3 up to 6 put together. So your speeds can be 600% improved. Of course the phone is technically supposed to do this on its own which it can occasionally but only in absolutely optimal situations. So not when you really need it too. Lol. So altho it might not work on carriers without this tech or overseas if u live in North America and use TMobile this will drastically help your phone whether you instantly notice it or not trust me it does!
f you notice anything negative or battery draining or your phone becomes even more radioactive simply go back into the menu and disable the Functions. If this helped you at all throw me a like. Enjoy.

Amazing upload speed. Thanks!
 

Attachments

  • Screenshot_20190904-193933.jpg
    Screenshot_20190904-193933.jpg
    192.2 KB · Views: 770

gigilie

Senior Member
Feb 6, 2011
772
1,103
MN
Haven't been able to replicate in aosp

Running Lineage. How do I install the stock oos dialer? Thanks
Gotta be on stock OOS u can try using shortcut master and downloading the rftoolkit apk, phone apk, settings apk and the other OnePlus toolkit files installing them setting prefs then use the shortcut master to hop onto the menu were talking about... Then make the changes assumably (this hasn't been tried to my knowledge and prob won't work hence the stock required) and if it works uninstall the files but I'm kind of assuming this trick changes settings with the oos modem files too like I said not sure hasn't been done but feel free to try we just can't help u here all we can recommend is getting stock oos then apply the hack to get better speeds and a stronger signal. When I compared the download speeds from aosp to oos the stock Kills it.
 

gigilie

Senior Member
Feb 6, 2011
772
1,103
MN
Possible new speed enhancement

A possible speed improvement maybe be noticable if when your able to edit the fast.tmobile apn for bearer select ever check box except unspecified instead of using the standard apn bearer unspecified. A friend claimed to see huge improvements in speeds (on his op7p not 6t but I'm sure it'd work for both)
If anyone wants to test this and post before and after scrns of your speeds for proof id like multiple verification before updating op. Thanks for your support and feedback appreciate all the users helping each other I don't get on very often...
 

Top Liked Posts

  • There are no posts matching your filters.
  • 48
    This little trick will change your measly 1 bar signal to nearly max bars and give you a solid consistent signal in places you normally would hardly have a connection. At least it did for me.

    This goes a bit beyond enabling VoLTE from your SIM Card Network settings which if you haven't done you should enable before trying this... Of course you may not have the same results I had. I found it works best from Stock ROM no root needed I'm currently on 9.0.12 but tried it on 9.0.11 and Beta 5.

    Like any mod you should make a backup now and proceed with caution. (By caution I mean don't deviate from instructions goofing around in any engineering mode is never wise)

    You should try check your internet speed now (Google internet speed! And take note of it then run the same test to see if your able to improve at all.


    Step 1: Optional step but for best results open dialer and type: *#*#4636#*#* From this Testing Menu select Phone Information. Once in phone info select LTE/UMTS auto (prl) for preferred Network type. Then scroll down a bit and make sure VoLTE is switched on. Exit the phone info screen.

    Step 2: Open Dialer again and type: *#800#
    A Warning Message to Engineering Mode will popup. Press Enter.

    Step 3: Click on the first option Called OnePlusLogKit
    Once in the LogKit scroll down until you see the menu called: FunctionSwitch now click and select it.

    Step 4: There's 3 checkboxes of interest in this menu... VoLTE Switch, VoWifi Switch and VT Switch. I enable all three but some may have better luck not enabling VT Switch. After enabling each option it'll try and reboot your phone just say no until you have all you want enabled.


    Now reboot and profit.

    I can tell you without a doubt that if your using a stock OOS Rom and using TMobile as your provider that these changes will not eat up your battery any more than normal and altho depending on your location and towers speed availability this can and will increase your overall speed and your ability to maintain a solid connection in low signal areas! It forces carrier aggration meaning it makes the modem in your phone connect multiple times over varied frequencies to achieve the highest level of connection. Like your old 4g phone x 3 up to 6 put together. So your speeds can be 600% improved. Of course the phone is technically supposed to do this on its own which it can occasionally but only in absolutely optimal situations. So not when you really need it too. Lol. So altho it might not work on carriers without this tech or overseas if u live in North America and use TMobile this will drastically help your phone whether you instantly notice it or not trust me it does!
    f you notice anything negative or battery draining or your phone becomes even more radioactive simply go back into the menu and disable the Functions. If this helped you at all throw me a like. Enjoy.
    6
    OK. I'm talking about LTE/UMTS auto (prl): I don't remember which was the default status.
    PS - This is not working for mobile operators which doesn't provide VoLTE, as in my case. Vodafone Romania doesn't have VoLTE. When I made the speed test, the phone connected to an Orange server due to VoLTE setup.
    Here is the OP default preferred network settings
    3
    Omg you have saved me. A million thanks. I switched to TMobile after getting this phone and the internet speed has been utterly garbage I've been going through hell with tech support trying to get useable speed. As you can see this made a world of difference.
    3
    Error: "Connection problem or invalid MMI code" after dialing *#800#. any idea? tia

    unlocked TMO OP6t, converted to Int'l OOS 0.0.12 Dual Sim
    Use stock dialer. Google dialer doesn't work.
    2
    Same...

    Omg you have saved me. A million thanks. I switched to TMobile after getting this phone and the internet speed has been utterly garbage I've been going through hell with tech support trying to get useable speed. As you can see this made a world of difference.

    Wow judging by your screenshot that's like 600% increase in service/speed!! ;) Glad that I could help! I was in exactly the same spot you were in. For the life of me couldn't figure out why my Moto e got better service out here in the boonies I'm lucky to get a bar at that time.... Tried countless different methods techniques and apps with no success. Finally I talked T-Mobile into sending me a signal booster but that would only Boost whatever signal it could pickup itself.... So I have it 50yards from the house with an extension cable in a sealed bucket wrapped in towels just to get around 2-4mbs a sec download speeds n that was shotty every blizzard id get no service or **** would blow over n grounds frozen so unless I want to pay $150 for internet I can't watch anything n my son couldn't play his Fortnite.... I finally figured it out a couple days ago n haven't noticed any negative or side effects from the mod. If I get into an area with LTE+ and CA I can go faster than my buddies AT&T5Ge lol or around 130Mbs but before the hack in the same spot I'd average around 15mbs. I'm curious if people are having speed improvements with WiFi signals I don't have a good one so I couldn't test it. I can confirm flashing the Oos based custom roms or Magisk ROMs either before or after greatly slows/lags/retards signal quality and speed. I'm going to work on a ROM that doesn't and also has tethering throttle bypass built in... I'm thinking the reasons they slow everything down is because their all overseas ports rather than base it off a 6t stock.... Anyways thanks again for sharing ur results bladestonez and I
    Appreciate the screenshot!:laugh::good::victory:
Our Apps
Get our official app!
The best way to access XDA on your phone
Nav Gestures
Add swipe gestures to any Android
One Handed Mode
Eases uses one hand with your phone